TM-353E
January 2001
Eff. w/Serial Number JJ339876
Processes
TIG (GTAW) Welding
Stick (SMAW) Welding
Description
Arc Welding Power Source
R
Syncrowave 250
60 Hz, 50 Hz
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Declaration of Conformity For
European Community (CE) Products
This information is provided for units with CE certification (see rating label on unit.)
NOTE
Manufacturer’s Name:
Miller Electric Mfg. Co.
Manufacturer’s Address:
1635 W. Spencer Street
Appleton, WI 54914 USA
Declares that the product:
Syncrowave 250
conforms to the following Directives and Standards:
Directives
Low Voltage Directive: 73/23/EEC
Machinery Directives: 89/392/EEC, 91/368/EEC, 93/C 133/04, 93/68/EEC
Electromagnetic Capability Directives: 89/336, 92/31/EEC
Standards
Safety Requirements for Arc Welding Equipment part 1: EN 60974-1: 1990
Arc Welding Equipment Part 1: Welding Power Sources: IEC 974-1
(April 1995 – Draft revision)
Degrees of Protection provided by Enclosures (IP code): IEC 529: 1989
Insulation coordination for equipment within low-voltage systems:
Part 1: Principles, requirements and tests: IEC 664-1: 1992
Electromagnetic compatibility (EMC) Product standard for arc welding equipment:
EN50199: August 1995
European Contact:
Mr. Luigi Vacchini, Managing Director
MILLER Europe S.P.A.
Via Privata Iseo
20098 San Giuliano
Milanese, Italy
Telephone:
Fax:
39(02)98290-1
39(02)98281-552
dec_con1 10/95
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SECTION 1 – SAFETY PRECAUTIONS FOR SERVICING
safety_stm1 4/95
1-1. Symbol Usage
Y
Marks a special safety message.
Means Warning! Watch Out! There are possible hazards with this
procedure! The possible hazards are shown in the adjoining symbols.
. Means NOTE; not safety related.
This group of symbols means Warning! Watch Out! possible ELECTRIC SHOCK, MOVING PARTS,
and HOT PARTS hazards. Consult symbols and related instructions below for necessary actions to
avoid the hazards.
1-2. Servicing Hazards
WARNING
The symbols shown below are used throughout this manual to call attention to and identify possible
hazards. When you see the symbol, watch out, and follow the related instructions to avoid the hazard.
Only qualified persons should service, test, maintain, and repair this unit.
During servicing, keep everybody, especially children, away.
ELECTRIC SHOCK can kill.
HOT PARTS can cause severe burns.
1. Do not touch live electrical parts.
1. Do not touch hot parts bare handed.
2. Stop engine or turn OFF welding power source and
wire feeder, and disconnect and lockout input
power using line disconnect switch, circuit
breakers, or by removing plug from receptacle
before servicing unless the procedure specifically
requires an energized unit.
2. Allow cooling period before servicing welding gun
or torch.
EXPLODING PARTS can cause injury.
3. Insulate yourself from ground by standing or
working on dry insulating mats big enough to
prevent contact with the ground.
1. Failed parts can explode or cause other parts to
explode when power is applied to inverters.
4. Do not leave live unit unattended.
2. Always wear a face shield and long sleeves when
servicing inverters.
5. When testing a live unit, use the one-hand method.
Do not put both hands inside unit. Keep one hand
free.
ELECTRIC SHOCK HAZARD from
incorrect use of test equipment.
6. Disconnect input power conductors from
deenergized supply line BEFORE moving a
welding power source.
1. Turn Off welding power source and wire feeder or
stop engine before making or changing meter lead
connections.
SIGNIFICANT DC VOLTAGE exists after
removal of input power on inverters.
2. At least one meter lead should be a self-retaining
spring clip such as an alligator clamp.
7. Turn Off inverter, disconnect input power, and
discharge input capacitors according to
instructions in Maintenance Section before
touching any parts.
3. Read instructions for test equipment.
STATIC ELECTRICITY can damage
parts on circuit boards.
1. Put on grounded wrist strap BEFORE handling
boards or parts.
HIGH-FREQUENCY RADIATION can
interfere with radio navigation, safety
services,
computers,
and
communications equipment.
2. Use proper static-proof bags to store, move, or ship
PC boards.
1. Have only qualified persons familiar with electronic
equipmentperform this installation.
FIRE OR EXPLOSION can result from
placing unit on, over, or near
combustible surfaces.
1. Do not place unit on, over, or near combustible
surfaces.
2. The user is responsible for having a qualified
electrician promptly correct any interference
problemresulting from the installation.
3. If notified by the FCC about interference, stop using
the equipment at once.
2. Do not service unit near flammables.
FLYING PIECES OF METAL or DIRT can
injure eyes.
4. Have the installation regularly checked and
maintained.
1. Wear safety glasses with side shields or face shield
during servicing.
5. Keep high-frequency source doors and panels
tightly shut, keep spark gaps at correct setting, and
use grounding and shielding to minimize the
possibility of interference.
2. Be careful not to short metal tools, parts, or wires
together during testing and servicing.
Syncrowave 250
TM-353 Page 1
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FALLING EQUIPMENT can cause
serious personal injury and equipment
damage.
MOVING PARTS can cause injury.
1. Keep away from moving parts.
2. Keep away from pinch points such as drive rolls.
1. Use lifting eye to lift unit only, NOT running gear,
gas cylinders, or any other accessories.
OVERUSE can cause OVERHEATED
EQUIPMENT.
1. Allow cooling period.
2. Use equipment of adequate capacity to lift unit.
MAGNETIC FIELDS FROM HIGH
CURRENTS can affect pacemaker
operation.
2. Reduce current or reduce duty cycle before
starting to weld again.
3. Follow rated duty cycle.
1. Pacemaker wearers keep away from servicing
areas until consulting your doctor.
READ INSTRUCTIONS.
1. Use MILLER Testing Booklet (Part No. 150 853)
when servicing this unit.
MOVING PARTS can cause injury.
1. Keep away from moving parts such as fans.
2. Consult the Owner’s Manual for welding safety
precautions.
2. Keep all doors, panels, covers, and guards closed
and securely in place.
3. Use only genuine MILLER replacement parts.
1-3. EMF Information
ConsiderationsAbout Welding And The Effects Of Low Frequency
Electric And Magnetic Fields
To reduce magnetic fields in the workplace, use the following
procedures:
1. Keep cables close together by twisting or taping them.
2. Arrange cables to one side and away from the operator.
3. Do not coil or drape cables around the body.
The following is a quotation from the General Conclusions Section of
the U.S. Congress, Office of Technology Assessment, Biological
Effects of Power Frequency Electric & Magnetic Fields – Background
Paper, OTA-BP-E-53 (Washington, DC: U.S. Government Printing
Office, May 1989): “. . . there is now a very large volume of scientific
findings based on experiments at the cellular level and from studies
with animals and people which clearly establish that low frequency
magneticfields can interact with, and produce changes in, biological
systems. While most of this work is of very high quality, the results are
complex. Current scientific understanding does not yet allow us to
interpret the evidence in a single coherent framework. Even more
frustrating,it does not yet allow us to draw definite conclusions about
questions of possible risk or to offer clear science-based advice on
strategies to minimize or avoid potential risks.”
4. Keep welding power source and cables as far away as
practical.
5. Connect work clamp to workpiece as close to the weld as
possible.
About Pacemakers:
The above procedures are also recommended for pacemaker
wearers. Consult your doctor for complete information.
TM-353 Page 2
Syncrowave 250
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SECTION 2 – DEFINITIONS
2-1. Warning Label Definitions
Warning! Watch Out! There are
possible hazards as shown by the
symbols.
1
Electric shock from welding
electrode or wiring can kill.
1.1 Wear dry insulating gloves.
Do not touch electrode with
bare hand. Do not wear wet or
damaged gloves.
1.2 Protect yourself from electric
shock by insulating yourself
from work and ground.
1.3 Disconnect input plug or
power before working on
machine.
2
Breathing welding fumes can
be hazardous to your health.
2.1 Keep your head out of the
fumes.
1.3
1
1.1
1.2
2.2 Use forced ventilation or local
exhaust to remove the fumes.
2.3 Use ventilating fan to remove
fumes.
3
Welding sparks can cause
explosion or fire.
2
2.1
2.2
3.1 Keep flammables away from
welding. Don’t weld near
flammables.
2.3
3.2 Welding sparks can cause
fires. Have a fire extinguisher
nearby and have a watch
person ready to use it.
3.3 Do not weld on drums or any
closed containers.
3
4
5
3.1
4.1
3.2
3.3
4
Arc rays can burn eyes and
injure skin.
4.1 Wear hat and safety glasses.
Use ear protection and button
shirt collar. Use welding
helmet with correct shade of
filter. Wear complete body
protection.
5
Become trained and read the
instructions before working on
the machine or welding.
+
+ +
6
Do not remove or paint over
(cover) the label.
6
+
S-176 254-A
Syncrowave 250
TM-353 Page 3
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2-2. Rating Label For CE Products
1
1
ISO/IEC 974-1
7A/10.2V
310A/22.4V
X
25% 60% 100%
I
310A 200A 155A
22.4V 18V 16.2V
2
U = 80V
0
U
2
5A/20.2V
310A/32.4V
X
25% 60% 100%
310A 200A 155A
32.4V 28V 26.2V
I
2
U = 80V
0
U
2
1
U = 220
I
= 117.2A I
= 59A
= 36A
1
1max
1Eff
50 Hz
U = 380
1
I
= 72.2A
= 63.8A
I
I
1max
1max
1Eff
U = 415
1
I
= 32A
1Eff
IP 21S
S-178 813-A
TM-353 Page 4
Syncrowave 250
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2-3. Symbols And Definitions
Some symbols are found only on CE products.
NOTE
Gas Tungsten Arc
Welding (GTAW)
Shielded Metal Arc
Welding (SMAW)
Amperes
Volts
Panel–Local
A
V
Do Not Switch
While Welding
Arc Force (DIG)
Remote
Spot Timer
Temperature
Input
Output
Circuit Breaker
Protective Earth
(Ground)
High Frequency -
Start
Alternating Current
High Frequency -
Continuous
Postflow Timer
Gas (Supply)
On
Preflow Timer
Gas Input
Off
High Frequency
Increase/Decrease
Of Quantity
Gas Output
Percent
Direct Current
Maximum
Penetration
Balance Control
Maximum Cleaning
Crater Time
Electrode Positive
Electrode
Negative
Meter
Single-Phase
Rated No Load
Voltage (Average)
Conventional Load
Voltage
Primary Voltage
Line Connection
U0
I1
U1
I2
U2
X
Single-Phase
Combined AC/DC
Power Source
Rated Welding
Current
1
1
Primary Current
Duty Cycle
Degree Of
Protection
Maximum Effective
Supply Current
Rated Maximum
Supply Current
Hertz
I1eff
I1max
Hz
IP
Electrode
Seconds
Work
Thickness Gauge
Spark Gap
S
Syncrowave 250
TM-353 Page 5
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SECTION 3 – INSTALLATION
3-1. Specifications
Amperes Input at AC Balanced
Rated Load Output,
50/60 Hz, Single-Phase
Rated
Welding Output
Amp
Range
Max
OCV
IP
Rating
200 V
230 V
460 V
575 V
PFC**
KVA
KW
No
PFC
106
(4.6*)
92
(4*)
46
(2*)
37
(1.6*)
21
(0.89*)
11.4
(0.68*)
NEMA Class II
(40) – 250
5–310 A
80 V
21
Amperes, 30 Volts
AC, 40% Duty
Cycle
With
PFC
76
66
33
26
15.2
11.4
*While idling
**Power Factor Correction
Amperes Input at AC Balanced
Rated Load Output,
50/60 Hz, Single-Phase
Rated
200
V
220
V
230
V
260
V
380 415
460
V
520
V
575
V
Welding
Output
PFC
**
Amp
Range
Max
OCV Rating
IP
V
V
KVA KW
NEMA
Class I
(60) – 200
Amperes,
28 Volts
AC, 60%
Duty Cycle
No
85
77
74
(4*)
65
45
41
37
(2*)
33
30
17
8.3
PFC (4.6*) (4.2*)
(3.5*) (2.4*) (2.2*)
(1.8*) (1.6*) (0.9*) (0.7*)
5–310 A
80 V
21
With
55
64
48
48
37
34
24
48
19
11
8.3
PFC (57*) (51*) (49*) (49*) (30*) (27*) (25*) (49*) (20*) (11*) (0.6*)
*While idling
**Power Factor Correction
3-2. Volt-Ampere Curves
The volt-ampere curves show the
minimum and maximum voltage
and amperage output capabilities of
the welding power source. Curves
of other settings fall between the
curves shown.
A. DC Mode
B. AC Mode
ssb1.1 10/91 – SB-116 199 / SB-116 200
TM-353 Page 6
Syncrowave 250
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3-3. Duty Cycle And Overheating
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
If unit overheats, thermostat opens,
output stops, light goes on (CE
models only), and cooling fan runs.
Wait fifteen minutes for unit to cool.
Reduce amperage or duty cycle be-
fore welding.
Y
Exceeding duty cycle can
damage unit and void
warranty.
40% Duty Cycle At 250 Amperes (60 Hz Models Only)
4 Minutes Welding
6 Minutes Resting
60% Duty Cycle At 200 Amperes
6 Minutes Welding
4 Minutes Resting
Overheating
0
A
15
OR
Reduce Duty Cycle
Minutes
duty1 4/95 / SB-116 198
Syncrowave 250
TM-353 Page 7
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3-4. Selecting A Location
1
2
Lifting Eye
Lifting Forks
Use lifting eye or lifting forks to
move unit.
Movement
If using lifting forks, extend forks
beyond opposite side of unit.
1
3
Rating Label (Non CE Models
Only)
4
Rating Label (CE Models
Only, See Section 2-2)
OR
2
Use rating label to determine input
power needs. CE label located on
rear panel.
Location And Airflow
5
6
Plate Label (CE Models Only)
Line Disconnect Device
6
Locate unit near correct input pow-
er supply.
Y
Special installation may be
required where gasoline or
volatile liquids are present –
see NEC Article 511 or CEC
Section 20.
3
4
18 in (460
mm)
5
18 in (460
mm)
ST-800 402 / ST-117 264-F
3-5. Dimensions And Weights
Dimensions
A
Height
30-3/4 in (781 mm)
19-3/4 in (502 mm)
27-1/2 in (698 mm)
27 in (686 mm)
26 in (661 mm)
25-1/4 in (642 mm)
1-1/2 in (38 mm)
1-1/8 (29 mm)
B
C
Width
E
D
Length
A
B
C
D
E
F
F
Front
G
17-7/8 (454 mm)
19-1/4 (489 mm)
1/2 in (13 mm) Dia
Weight
G
H
6 Holes
H
ST-154 792-B
355 lbs (161 kg)
Syncrowave 250
TM-353 Page 8
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3-6. Tipping
Y
Be careful when placing or
moving unit over uneven
surfaces.
3-7. Weld Output Terminals And Selecting Cable Sizes
Y
ARC WELDING can cause Electromagnetic Interference.
To reduce possible interference, keep weld cables as short as possible, close together, and down low, such as on the floor.
Locate welding operation 100 meters from any sensitive electronic equipment. Be sure this welding machine is installed
and grounded according to this manual. If interference still occurs, the user must take extra measures such as moving
the welding machine, using shielded cables, using line filters, or shielding the work area.
Total Cable (Copper) Length In Weld Circuit Not Exceeding
150 ft
(45 m)
200 ft
(60 m)
250 ft
(70 m)
300 ft
350 ft
400 ft
100 ft (30 m) Or Less
(90 m) (105 m) (120 m)
10 – 60% 60 – 100%
Weld Output
Terminals
Welding
Amperes
Duty
Duty
10 – 100% Duty Cycle
Cycle
Cycle
100
150
200
250
300
350
400
500
4
3
4
3
4
3
1
2
1
1/0
3/0
1/0
3/0
2
1/0
2/0
3
2
1
1/0
2/0
3/0
4/0
4/0
2-2/0
2/0
3/0
4/0
4/0
2
1
1/0
2/0
3/0
3/0
4/0
3/0
4/0
2-2/0
2-3/0
2-3/0
2-4/0
3-3/0
2-2/0
2-3/0
2-4/0
2-4/0
3-3/0
1
1/0
2/0
2/0
3/0
4/0
2-2/0
2-3/0
2-3/0
2-4/0
1/0
1/0
2/0
2-2/0
2-2/0
2-3/0
Work
Electrode
ST-154 795-C
Weld cable size (AWG) is based on either a 4 volts or less drop or a current density of at least 300 circular mils per ampere. Contact your dis-
2
tributor for the mm equivalent weld cable sizes.
S-0007-E
Syncrowave 250
TM-353 Page 9
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3-8. Remote 14 Receptacle
Socket*
Socket Information
A
B
24 volts ac.
Contact closure to A completes 24 volts ac contactor control
circuit.
C
D
E
K
Commandreference; 0 to +10 volts dc output to remote control.
Remote control circuit common.
A
J
K
I
B
C
L
N
H
A
M
E
D
G
0 to +10 volts dc input command signal from remote control.
Chassis common.
F
ST-154 795-C
*The remaining sockets are not used.
3-9. 115 Volts AC Duplex Receptacle And Shielding Gas Connections
Y
Turn Off power before
connectingto receptacle.
1
115 V AC Receptacle
Receptacle is protected from over-
load by circuit breaker CB1 (see
Section 7-2).
5
2
3
Gas Valve In Fitting
Gas Valve Out Fitting
4
6
Fittings have 5/8-18 right-hand
threads
4
Cylinder Valve
Open valve slightly so gas flow
blows dirt from valve. Close valve.
5
6
Regulator/Flow Gauge
Flow Adjust
Typical flow rate is 20 cfh (cubic feet
per hour) (9.4 L/min)
7
High Frequency Control (see
Section 4-1)
1
7
3
2
Ref. ST-154 795-C / Ref. ST-157 858
TM-353 Page 10
Syncrowave 250
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3-10. Electrical Service Guide
All values calculated at 60% duty cycle.
NOTE
Without Power Factor
Correction
60 Hertz Models
With Power Factor Correction
200
85
230
74
460
37
575
30
200
55
230
48
460
24
575
19
Input Voltage
Input Amperes At Rated Output
Max Recommended Standard Fuse Or Circuit
Breaker Rating In Amperes
125
4
110
6
60
10
45
10
80
8
70
8
35
12
30
14
Min Input Conductor Size In AWG/Kcmil
173
(53)
158
(48)
291
(89)
455
(139)
86
(26)
114
(35)
186
(58)
189
(48)
Max Recommended Input Conductor Length
In Feet (Meters)
6
6
10
10
8
8
12
14
Min Grounding Conductor Size In AWG/Kcmil
Reference: 1996 National Electrical Code (NEC)
S-0092-J
With Power Factor
Correction
50 Hertz Models
Without Power Factor Correction
220
77
260
65
380
45
415
41
520
33
220
380
37
415
Input Voltage
64
90
6
34
50
10
Input Amperes At Rated Output
Max Recommended Standard Fuse Or Circuit
Breaker Rating In Amperes
125
6
100
6
70
8
60
8
50
10
60
10
Min Input Conductor Size In AWG/Kcmil
145
(44)
202
(62)
291
(89)
347
(106)
372
(113)
145
(44)
291
(89)
347
(106)
Max Recommended Input Conductor Length
In Feet (Meters)
6
8
8
10
10
6
8
10
Min Grounding Conductor Size In AWG/Kcmil
Reference: 1996 National Electrical Code (NEC)
S-0092-J
Syncrowave 250
TM-353 Page 11
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3-11. Placing Jumper Links And Connecting Input Power
Check input voltage available at
site.
1
Jumper Link Label
Check label inside your unit–
only one label is on unit.
200 VOLTS
230 VOLTS
460 VOLTS
Y
Only make connections for
the voltages shown on the la-
bel inside your unit. Do not
make connections for any
other voltages. If jumper link
label is missing from inside
unit, check rating label (see
Section 3-4) for allowable in-
put voltages.
L
L
L
L
L
L
S-083 566-C
2
230 VOLTS
460 VOLTS
575 VOLTS
2
Jumper Links
L
L
L
L
L
L
Move jumper links to match input
voltage.
S-010 587-B
3
Input And Grounding
Conductors
220 VOLTS
380 VOLTS
415 VOLTS
Select size and length using
Section 3-10.
L
L
L
L
L
L
4
Line Disconnect Device
S-131 783-A
Select type and size of overcurrent
protection using Section 3-10.
260 VOLTS
380 VOLTS
520 VOLTS
Reinstall side panel.
Y
Special installation may be
required where gasoline or
volatile liquids are present –
see NEC Article 511 or CEC
Section 20.
L
L
L
L
L
L
S-047 672-A
1
Connect GND/PE
Conductor First
GND/PE
Earth Ground
4
L1 (U)
L2 (V)
3
Connect GND/PE
Conductor First
Tools Needed:
3/8 in
3/8, 1/2, 7/16 in
ST-117 263-K
TM-353 Page 12
Syncrowave 250
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SECTION 4 – OPERATION
4-1. Controls
1
Ammeter
See Section 4-3.
7
8
2
Voltmeter
See Section 4-3.
High Frequency Switch
See Section 4-11.
Output (Contactor) Switch
See Section 4-8.
9
3
6
5
10
4
11
12
5
Spot Time Switch And Control
(Optional)
13
See Section 4-5.
Preflow Time Control (Optional)
See Section 4-12.
AC Balance Control
See Section 4-6.
Crater Time Control And Switch
See Section 4-4.
6
4
3
7
8
14
9
Amperage Adjustment Control And
Switch
See Section 4-7.
10 Arc Force (Dig) Switch And Control
See Section 4-9.
11 Postflow Time Control
See Section 4-10.
2
12 High Temperature Shutdown Light
(CE Models Only)
1
Lights when unit overheats and shuts
down (see Section 3-3).
13 Power Switch And Pilot Light
Use switch to turn unit and light On and
Off.
14 Output Selector Switch
See Section 4-2.
15 High Frequency Control
See Section 4-11.
15
Ref. ST-117 264-F / Ref. ST-154 795-C
Syncrowave 250
TM-353 Page 13
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4-2. Output Selector Switch
1
Output Selector Switch
Y
Do not use AC output in
damp areas, if movement is
confined, or if there is dan-
ger of falling. Use AC output
ONLY if required for the
welding process, and then
use a remote control.
1
Y
Do not change position of
switch while welding or
while under load.
Use switch to select (DCEN) Direct
Current Electrode Negative, AC, or
(DCEP) Direct Current Electrode
Positive output without changing
weld output cable connections.
Ref. ST-181 675-A
4-3. Meters
1
Voltmeter
Voltmeter displays voltage at the
weld output terminals, but not nec-
essarily the welding arc due to
cable resistance, poor connec-
tions, etc.
1
2
2
Ammeter
Ammeter displays weld amperage
output of unit.
TM-353 Page 14
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4-4. Crater Time Controls
1
Crater Time Control
Use control to reduce current over a
set period of time (0–15 seconds) at
the end of the weld cycle when NOT
using a remote current control.
1
2
Crater Time Switch
ON – provides crater time.
OFF – provides no crater time.
Place switch in the OFF position for
Shielded Metal Arc Welding
(SMAW).
Application:
2
Crater Time should be used while
GTAW welding materials that are
crack sensitive, and/or the operator
wants to eliminate the crater at the
end of the weld.
Note: This applies if the operator is
using an on/off only type control to
start and stop the welding process.
4-5. Spot Time Controls
1
Spot Time Switch
Place switch in the ON position to
turn on spot weld circuitry.
The (GTAW) TIG Spot process is
generallyused with a direct current
electrode negative (DCEN) set-up.
2
Place switch in the OFF position to
turn off spot weld circuitry. Put
switch in the OFF position while do-
ing Shielded Metal Arc Welding
(SMAW).
2
Spot Time Control
Use control to set time (0–5.7 sec-
onds) for Gas Tungsten Arc
(GTAW) spot welds. Spot time be-
gins at arc initiation. If the arc is bro-
ken during the spot time cycle, the
timer stops but does not reset.
When the spot time has ended,
weld output stops. Postflow starts
when the remote contactor is
opened. The spot timer resets after
the contactor opens.
1
Application:
TIG spot welding is used for joining
thinner materials that are in close
contact, with the fusion method. A
good example would be joining coil
ends.
Syncrowave 250
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4-6. AC Balance Control
1
AC Balance Control
Balance Control (AC GTAW):
Control changes the AC output
square wave. Rotating the control
towards 10 provides deeper pene-
tration. Rotating the control towards
0 provides more cleaning action of
the workpiece.
1
When the control is in the Balanced
position, the wave shape provides
equal penetration and cleaning
action.
Application:
When welding on oxide forming ma-
terials such as aluminum or magne-
sium, excess cleaning is not neces-
sary. To produce a good weld, only
a minimal amount, approximately a
0.10 in (2.5mm) of etched zone
along the weld toes is required.
Set control to 7 and adjust as nec-
essary. Joint configuration, set-up,
process variables, and oxide thick-
ness may affect setting.
Setting
Output Waveforms
50% Electrode
Arc
Balanced
Arc rectification can occur when
welding above 200 amps and/or
while welding with helium gas. If this
condition occurs, increasing the
Balance control towards maximum
penetration,may help to restabilize
the arc.
Positive
3
50% Electrode
Negative
More Penetration
32% Electrode
Positive
68% Electrode
Negative
10
More Cleaning
55% Electrode
Positive
45% Electrode
Negative
0
Ref. S-0795-A
TM-353 Page 16
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4-7. Amperage Adjustment Controls
1
AmperageAdjustment Control
Use control to adjust amperage,
and preset amperage on ammeter
(see Section 4-3). This control may
be adjusted while welding.
1
For remote amperage control,
front panel control setting is the
maximumamperage available. For
example:If front panel control is set
to 200 A, the range of the remote
amperagecontrol is 5 to 200 A.
For spot welding, use Amperage
Adjust control to select from 5–310
amps of peak amperage (see Sec-
tion 4-5).
2
Amperage Control Switch
Use switch to select way of control-
ling amperage adjustment.
For front panel control, place switch
in the PANEL position.
2
For remote control, place switch in
REMOTE 14 position, and connect
remote control device (see Section
3-8).
4-8. Output (Contactor) Control Switch
Y
Weld output terminals are
energized when Output
(Contactor) switch is On and
Power is On.
1
Output/Contactor Switch
1
Use switch to select way of control-
ling unit output.
For front panel control, place switch
in ON position.
When On is selected, HF and gas
control are disabled.
For remote control, place switch in
REMOTE 14 position, and connect
remote control device (see Section
3-8).
Syncrowave 250
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4-9. Arc Controls
1
Arc Control (Dig)
For AC And DC SMAW Welding
When set at 0, short-circuit amper-
age at low arc voltage is the same
as normal welding amperage.
1
When setting is increased, short-
circuit amperage at low arc voltage
increases.
Set at 0 for GTAW welding.
2
Arc Control Switch
Place switch in the ON position to
turn on arc control circuitry. When
switch is in the OFF position, no ad-
ditional amperage is available at
low arc voltages. Place switch in
the OFF position while performing
Gas Tungsten Arc Welding
(GTAW).
2
Application:
Control helps arc starting or making
vertical or overhead welds by in-
creasing amperage at low arc volt-
age, and reduces electrode sticking
while welding.
4-10. Postflow Time Control
1
Postflow Time Control
Use control to set length of time
(0–70 seconds) gas flows after
welding stops. It is important to set
enoughtime to allow gas to flow un-
til after the tungsten and weld
puddle has cooled down.
1
Application:
Postflow is required to cool tung-
sten and weld, and to prevent con-
taminationof tungsten and weld. In-
crease postflow time if tungsten or
weld are dark in appearance.
TM-353 Page 18
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4-11. High Frequency Controls
Y
Place
High Frequency
1
switch in Off position before
using the shielded metal arc
welding (SMAW) process.
1
High Frequency Switch
START – (Up position) provides HF
for arc starting only. High frequency
turns on to help start arc when out-
put is enabled. High frequency
turns off when arc is started, and
turns on whenever arc is broken to
help restart arc.
Application:
HF Start is used when the DCEN
GTAW process is required.
OFF – provides no HF. Use OFF for
SMAW (stick electrode) welding.
CONTINUOUS – (Down position)
provides HF continuously through-
out the weld.
Application:
HF Continuous is used when the
AC GTAW process is required.
2
High Frequency Intensity
Control
Use control to change amount of
HF energy used to start and main-
tain the arc. Set as low as practical
to prevent interfering with electronic
equipment.
2
4-12. Preflow Time Control (Optional)
1
Preflow Time Control
Use control to set the length of time
(0–15 seconds) that gas flows be-
fore an arc is started.
Application:
Preflow is used to purge the imme-
diate weld area of atmosphere. Pre-
flow also aids in consistent arc
starting.
1
Syncrowave 250
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SECTION 5 – THEORY OF OPERATION
1
Input Terminal Board TE1
AC
24
1
2
4
1φ
1φ
Provides means for operation on
different input voltages.
Background
Input
Terminal
Board TE1
Power
Switch
S1
Main
Transformer
T1
Power
Source
2
Power Switch S1
Provide on/off control of unit.
Fan Motor FM
1-Phase
Line
Input
115 VAC
DC
3
Power
3
14
23
Provides cooling of internal compo-
nents.
Fan
Motor
FM
Circuit
Breaker
CB1
Main
Rectifier
SR1
4
Main Transformer T1
Supplies power to weld output cir-
cuit, various control circuits, main
control board PC1, and fan motor
FM.
15
115 VAC Duplex
Receptacle
RC2
5
Control Board PC1
Controls weld output by changing
the SCR gate pulses (conduction
times) after comparing current
feedback to selected amperage
signal.
115 VAC
1φ
, 10 VAC
Synchronization
Signal
Also provides input connections for
switches S3, S5, S6, and S7.
SCR
Gating
Signals
6
Arc Control Switch S6 And
Control R2
5
6
7
6
7
8
Arc Control
Switch
S6
R2 selects short-circuit amperage
when S6 is On, and High Frequen-
cy control R13 is Off.
Arc Control
R2
Control
Board
PC1
7
Crater Time Switch S7 And
Control R11
R11 selects crater time when S7 is
on, and Amperage Control switch
S5 is in Panel position.
Crater Time
Control
R11
Crater Time
Switch
S7
8
Thermostat TP1
If T1 overheats, TP1 opens stop-
ping all weld output.
16
17
9
Postflow
Timer
TD1
Output
(Contactor)
Switch S3
Thermostat
TP1
9
Output (Contactor) Switch S3
Selects On or remote contactor
control.
10 AC Balance Control R3
Gas
Valve
GS1
10
Controls changes to ac output
square wave.
AC Balance
Control
R3
11 Ammeter A1 And Voltmeter
V1
Display weld amperage and volt-
age while welding.
♦
11
Ammeter
A1
12 Amperage Control Switch S5
And Adjustment Control R1
R1 selects weld output amperage
when S5 is in Panel.
12
12
13
13
13 Remote 14 Filter Board
PC2/Remote 14 Receptacle
RC1
Amperage
Adjustment
Control R1
Amperage
Control
Remote 14
Filter Board
PC2
Switch S5
PC2 protects unit from high fre-
quency, and RC1 connects remote
amperageand contactor controls to
power source.
Remote
Amperage
Control
14 Circuit Breaker CB1
Protects 115 volts ac duplex recep-
tacle RC2 from overload.
TM-353 Page 20
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15 115 Volts AC Duplex Recep-
tacle RC2
28
Provides connection point for auxil-
iary equipment.
26
30
25
Hall Device
Work Weld
16 Postflow Timer TD1
HD1
Output
Stabilizer
Z1
Terminal
Controls shielding gas and coolant
postflow time.
♦
11
Voltmeter
V1
17 Gas Valve GS1
Output
Selector
Switch
S4
Provides shielding gas during the
weld cycle.
30
21
Electrode
Weld Output
Terminal
18 Preflow Timer TD3, Control
R12, And Switch S9
High
Frequency
Coupling
Coil T3
R12 selects time shielding gas
flows before arc starts. S9 is an in-
tegral part of R12 so that when R12
is turned past zero (0), TD3 is off.
19 Spot Timer TD2, Switch S8,
And Control R10
27
29
22
21
High
R10 selects time output is available
when spot welding. S8 selects Off
or spot welding with remote contac-
tor control.
Line
Filter
FL1
Integrated
Frequency
Intensity
Rectifier
SR2
Control R13
20 High Frequency Transformer
T2
Steps up input voltage and charges
capacitor C4.
Current Feedback
Spark Gaps G
Capacitor
C4
Voltage Feedback
Voltage Feedback
21 Spark Gaps G And High Fre-
quency Coupling Coil T3
G provides path for C4 to discharge
into T3. T3 supplies high-frequency
to welding circuit.
20
22 High Frequency Intensity
Control R13
High
Frequency
Transformer
T2
Changes amount of HF energy
used to start and maintain the arc.
23 Main Rectifier SR1
115 VAC
Changes the ac output from T1 to
full-wave rectified dc.
♦
♦
18
19
Preflow
Timer
TD3
Spot
Timer
TD2
24 Background Power Source
Provides reduced weld output rip-
ple at low weld output levels.
25 Stabilizer Z1
♦
19♦
18
Smooths dc welding current.
26 Hall Device HD1
Preflow Time
Spot Time
Control
R10
Control
R12
Provides current feedback signal to
PC1 through line filter FL1.
Switch
S9
27 Line Filter FL1
19♦
Spot Time
Switch
S8
Filters current feedback signal.
28 Output Selector Switch S4
Provides either AC or DC and out-
put polarity.
AC Or DC Control
29 Integrated Rectifier SR2
1φ Power
Provides dc voltage feedback to
PC1.
Weld Current Circuit
External Circuits
30 Electrode And Work Weld
Output Terminals
Provide weld output.
♦
Optional
Syncrowave 250
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SECTION 6 – TROUBLESHOOTING
6-1. Troubleshooting Table
. See Section 6-2 for test points and values and
Section 10 for parts location.
. Use MILLER Testing Booklet (Part No. 150 853)
when servicing this unit.
Trouble
Remedy
Prior to Serial No. KG164875, no weld Be sure line disconnect switch is in the On position.
output; unit completely inoperative –
Effective with Serial No. KG164875,
no weld output; unit completely inop-
erative; PL2 off.
Replace building line fuse(s) or reset circuit breaker(s) if open.
Check for proper electrical input connections (see Section 3-11).
Check for proper jumper link position (see Section 3-11).
Check Power switch S1 and replace if necessary.
Prior to Serial No. KG164875, no weld If using remote control, place Output (Contactor) switch S3 in Remote 14 position, and connect re-
output; fan runs – Effective with Serial mote control to Remote 14 receptacle RC1 (see Sections 3-8 and Section 4-8). If remote is not being
No. KG164875, no weld output; fan
runs; PL2 on.
used, place Output switch S3 in On position.
Check, repair or replace remote control device.
Allow a cooling period of approximately 15 minutes. If thermostats TP1 remain open, check continuity
and replace if necessary (see Section 3-3).
Check circuit breaker CB1, and reset if open (see Section 7-2).
Place Output Selector switch S4 in desired position (see Section 4-2).
Check optional preflow timer board TD3, and replace if necessary.
Check optional spot timer relay TD2 for proper connections and resistance. Replace TD2 if
necessary.
Check continuity of Spot Time switch S8. Check condition of contacts. Repair or replace S8 if neces-
sary.
Check SR1, and replace necessary components. If components are replaced, check capacitors C7
thru C10. Replace capacitor(s) if necessary.
Check control board PC1 and connections, and replace if necessary.
Effective with Serial No. KB110695, check resistance and connections of HD1; HD1 is 1600 ohms
±10% between pins 1 and 3 of plug PLG3. Check input and output voltages. Replace HD1 if
necessary.
Unit provides only minimum weld
output.
Check position of Amperage Control switch S5 (see Section 4-7).
Increase Amperage Adjustment control R1 setting if a remote control is used (see Section 4-7).
Check, repair or replace remote control device.
Check resistance and connections of Amperage Adjustment control R1; R1 is 1000 ohms ±10%.
Replace R1 if necessary.
Check SCRs in main rectifier SR1, and replace if necessary. If any SCRs are replaced, Check capac-
itors C7 through C10 for a short or open, and check for proper connections. Replace C7 through C10
if necessary.
Check control board PC1 and connections, and replace if necessary.
Effective with Serial No. KB110695, check resistance and connections of HD1; HD1 is 1600 ohms
±10% between pins 1 and 3 of plug PLG3. Check input and output voltages. Replace HD1 if
necessary.
Unit provides only maximum weld
output.
Check Amperage Adjustment control R1 for proper connections and resistance; R1 is 1000 ohms
±10%. Replace R1 if necessary.
Effective with Serial No. KB110695, check resistance and connections of HD1; HD1 is 1600 ohms
±10% between pins 1 and 3 of plug PLG3. Check input and output voltages. Replace HD1 if
necessary.
Check connections for continuity to shunt device on units with Serial No. prior to KB110695.
Check bypass capacitors C13, C14, C16, C17, C18, and C19 for broken leads, shorts, and leakage.
Replace if necessary.
TM-353 Page 22
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Trouble
Remedy
Check SCRs in main rectifier SR1, and replace if necessary. If any SCRs are replaced, Check capac-
itors C7 through C10 for a short or open, and check for proper connections. Replace C7 through C10
if necessary.
Check control board PC1 and connections, and replace if necessary.
Check connections to line filter FL1. Check input to PC1. Replace FL1 if necessary.
Check for poor or improper input or output connections. See Sections 3-11 and 3-8.
Replace electrode.
Erratic weld output.
Check torch assembly, and replace if necessary.
Check fuse F2 in rectifier SR3 circuit, and replace if necessary.
If Amperage Control switch S5 is in the Remote position check, repair, or replace remote amperage
control device if necessary.
Check connections for continuity to shunt device on units with Serial No. prior to KB110695.
Check Amperage Adjustment control R1 for proper connections and resistance; R1 is 1000 ohms
±10%. Replace R1 if necessary.
Check bypass capacitors C13, C14, C16, C17, C18, and C19 for broken leads, shorts, and leakage.
Replace if necessary.
Check SCRs in main rectifier SR1, and replace if necessary. If any SCRs are replaced, Check capac-
itors C7 through C10 for a short or open, and check for proper connections. Replace C7 through C10
if necessary.
Check control board PC1 and connections, and replace if necessary.
No or limited ac balance control.
Check AC Balance control R3 for proper connections and resistance; R3 is 5000 ohms ±10%.
Replace R3 if necessary.
Check control board PC1 and connections, and replace if necessary.
Check SCRs in main rectifier SR1, and replace if necessary. If any SCRs are replaced, Check capac-
itors C7 through C10 for a short or open, and check for proper connections. Replace C7 through C10
if necessary.
No crater fill time.
Check position of Crater switch S7 (see Section 4-4).
Check position of Crater control R11 (see Section 4-4).
Be sure arc voltage is below 24 volts (see Section 3-2. Volt-Ampere Curves).
Check position of Amperage Control switch S5, S5 must be in Panel position (see Section 4-7).
Check control board PC1 and connections, and replace if necessary.
Check position of Crater control R11 (see Section 4-4).
Crater fill time too long or does not
time out.
Check resistance and connections of Crater control R11; R11 is 5 meg ohms ±10%. Replace R11 if
necessary.
Check control board PC1 and connections, and replace if necessary.
Place Arc Control switch S6 in the On position.
No arc control.
Place High Frequency switch S2 in the Off position.
Be sure arc voltage is below 24 volts (see Section 3-2. Volt-Ampere Curves).
Check position of Arc Control R2 (see Section 4-9).
Check fuse F1 in rectifier SR3 circuit, and replace if necessary.
Check resistance and connections of Arc control R2; R2 is 1000 ohms ±10%. Replace R1 if
necessary.
Check control board PC1 and connections, and replace if necessary.
Use proper size tungsten for welding application.
Lack of high frequency at tungsten
electrode; difficulty in starting an arc.
Use shortest possible cables (see Section 3-7).
Check cables and torch for cracked or deteriorated insulation or bad connections. Repair or replace
necessary parts.
Be sure to disconnect SMAW electrode cable from weld output terminal when GTAW welding.
Decrease gas flow setting.
Use properly prepared tungsten.
Increase setting of High Frequency Intensity control R13 (see Section 4-11).
Check spark gaps G, and readjust if necessary (see 7-4).
Syncrowave 250
TM-353 Page 23
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Trouble
Remedy
No high frequency at spark gaps G.
Check position of High Frequency switch S2 (see Section 4-11).
Place Output (Contactor) switch S3 in Remote position and be sure remote control is connected to
Remote receptacle RC1 (see Section 3-8).
Check circuit breaker CB1, and reset if open (see Section 7-2).
Check fuse F1 in rectifier SR2 circuit, and replace if necessary.
Check coil voltage and connections of contactor control relay CR1. Check continuity of coil and con-
dition of contacts. Replace CR1 if necessary.
Check coil voltage and connections of contactor control relay CR5. Check continuity of coil and con-
dition of contacts. Replace CR5 if necessary.
Check spark gaps G, and readjust if necessary (see Section 7-4).
Check resistance and connections of High Frequency Intensity control R13; R13 is 1.5 ohms ±10%.
Replace R1 if necessary.
Check capacitor C4 for a short or open, and check for proper connections. Replace C4 if necessary.
Check transformer T2 for signs of winding failure. Check continuity across windings, and check for
proper connections. Check secondary voltages. Replace T2 if necessary.
Check coupling coil T3 for signs of winding failure. Check continuity across windings, and check for
proper connections. Replace T3 if necessary.
Check control board PC1 and connections, and replace if necessary.
No preflow time (optional).
Place Output (Contactor) switch S3 in Remote position and be sure remote control is connected to
Remote receptacle RC1 (see Section 3-8).
Check position of Preflow Time control R12.
Check continuity of Preflow Time switch S9. Check condition of contacts. Repair or replace S9 if nec-
essary.
Remove jumper link 1 on terminal strip 1T.
Check optional preflow timer board TD3, and replace if necessary.
Optional spot timer relay TD2 does not Place Spot Time switch S8 in the On position.
time out.
Remove jumper link 2 from terminal strip 1T.
Place Spot Time control R10 in desired position.
Check coil voltage and connections of spot timer relay TD2. Check continuity of coil and condition of
contacts. Replace TD2 if necessary.
Check coil voltage and connections of control relay CR3. Check continuity of coil and condition of
contacts. Replace CR3 if necessary.
Check coil voltage and connections of control relay CR1. Check continuity of coil and condition of
contacts. Replace CR1 if necessary.
Postflow timer does not time out.
Check position of Postflow Time control setting (see Section 4-10).
Check Control relay CR5 contacts 2 and 5 for proper operation. Replace CR5 if necessary.
Check coil voltage and connections of gas valve GS1. Check continuity of coils. Replace GS1 if nec-
essary.
Check input voltage and connections to Postflow timer board TD1. Check continuity of contacts. Re-
place TD1 if necessary.
Check control board PC1 and connections, and replace if necessary.
Check position of Postflow Time control setting (see Section 4-10).
No postflow time.
Place Output(Contactor) switch S3 in the Remote position, and connect a remote control to recep-
tacle RC1 according to Section 3-8.
Check coil voltage and connections of control relay CR5. Check continuity of coil and condition of
contacts. Replace CR5 if necessary.
Check coil voltage and connections of gas valve GS1. Check continuity of coils. Replace GS1 if nec-
essary.
Check input voltage and connections to Postflow timer board TD1. Check continuity of contacts. Re-
place TD1 if necessary.
Check control board PC1 and connections, and replace if necessary.
No gas flow.
Place Output(Contactor) switch S3 in the Remote position, and connect a remote control to recep-
tacle RC1 according to Section 3-8.
Check circuit breaker CB1, and reset if open (see Section 7-2).
TM-353 Page 24
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Trouble
Remedy
Check Control relay CR2 contacts 4 and 7 for proper operation. Replace CR2 if necessary.
Check coil voltage and connections of gas valve GS1. Check continuity of coils. Replace GS1 if nec-
essary.
No power output at 115 volts ac recep- Check circuit breaker CB1, and reset if open (see Section 7-2).
tacle RC1; weld output available.
Fan motor FM does not run; weld out-
put available. Effective with Serial No.
KG164875, unit is equipped with Fan-
On-Demand, which only runs when
cooling is required.
Check and clear fan blade obstruction.
Check coil voltage and connections of fan motor FM, and replace if necessary.
Check diode D1, and replace if necessary.
Line fuse opens immediately when
solid-state contactor SR1 turns on in
DC mode only.
Check SCRs in main rectifier SR1, and replace if necessary. If any SCRs are replaced, Check capac-
itors C7 through C10 for a short or open, and check for proper connections. Replace C7 through C10
if necessary.
No control of weld output.
Check position of Amperage Control switch S5 (see Section 4-7).
Check resistance and connections of Amperage Adjustment control R1; R1 is 1000 ohms ±10%.
Replace R1 if necessary.
Check, repair or replace remote control device.
Effective with Serial No. KB110695, check resistance and connections of HD1; HD1 is 1600 ohms
±10% between pins 1 and 3 of plug PLG3. Check input and output voltages. Replace HD1 if
necessary.
Check control board PC1 and connections, and replace if necessary.
Check position of Postflow Time control R12 (see Section 4-10).
Tungsten electrode oxidizing and not
remaining bright after conclusion of
weld.
Check and tighten all gas fittings if necessary.
Increase gas flow setting.
Shield weld zone from drafts.
Properly prepare tungsten.
Place High Frequency switch S2 in Start or Continuous position.
Use proper size tungsten for welding application.
Wandering arc - poor control of direc-
tion of arc.
Properly prepare tungsten.
Controls connected to Remote 14
receptacle RC1 do not work properly.
Check, repair or replace remote control device.
Check Amperage Control switch S5 position (see Section 4-7). Check and replace S5 if necessary.
Check Output (Contactor) switch S3 position (see Section 4-8). Check and replace S3 if necessary.
Check position of jumper links 1 and 2 on terminal strip 1T according to Section 6-2.
Check coil voltage and connections of control relay CR2. Check continuity of coil and condition of
contacts. Replace CR2 if necessary.
Prior to Serial No. KF959379, check choke RFC1 connections. Check continuity of RFC1. Replace if
necessary. Effective with Serial No. KF959379 check remote 14 filter board PC2 (see Section 6-6).
Replace PC2 if necessary.
Check control board PC1 and connections, and replace if necessary.
Calibrate ammeter as instructed in Section 6-8.
Ammeter A1 not displaying correct
weld output amperage.
Check ammeter A1 voltage; +1 millivolts dc per 3 ampere of weld output. Replace A1 if necessary.
Check control board PC1 and connections, and replace if necessary.
Effective with Serial No. KB110695, check resistance and connections of hall device HD1; HD1 is
1600 ohms ±10% between pins 1 and 3 of plug PLG3. Check input and output voltages. Replace HD1
if necessary.
Voltmeter V1 not displaying correct arc Check connections for continuity to voltmeter V1. Replace V1 if necessary.
voltage.
Electronic equipment in welding area
not working properly.
HF interference problem. Check for proper installation, and correct problem (see Section 8).
Syncrowave 250
TM-353 Page 25
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6-2. Troubleshooting Circuit Diagram For Welding Power Source
Y
Disable high frequency by placing High Frequency
switch S2 in Off position before testing unit.
R1
R1
R1
V3
V2
V25
V1
V11
V4
V5
R1
V10
V9
V6
V8
V7
Link 1 Link 2
V13
V12
V14
V17
TD1 begins to time out
when CR5 deenergizes
V16
V15
TD3 begins to time out
when CR4 energizes
CR2 energizes when
remote contactor
switch closes
See Figure 9-19
for PC3 circuit
CR3 energizes during spot time
when an arc is detected
CR4 energizes when remote contactor
switch closes
See Section 3-8
for RC1
information
See Section 6-6
for PC2 data
TM-353 Page 26
Syncrowave 250
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Test Equipment Needed:
Voltage Readings
a) Tolerance – ±10% unless
specified
b) Reference
–
to circuit
common (lead 42) unless
noted
See Figure 10-1 for
HD1 location
No calibration available
for voltmeter V1
c) Wiring Diagram
Section 10
–
see
V1
230 volts ac
77 volts ac
V2
V3
82.5 volts ac
57 volts ac
115 volts ac
24 volts ac
18 volts ac
10 volts ac
80 volts dc
115 volts ac
24 volts ac
V4
R1
V5, V6
V7
V24
V8, V9
V10
V11
V12. V13, V14
V15, V16, V17
V18
V23, B,
C, D, E
R1
See Section 6-3
for waveforms
B, C, D, E
115 volts ac with S2
in Start or Con-
tinuous
V25
R3
R2
V22
V21
V19
0 to +10 volts dc
with contactor on
V20, V21
V22
24 volts dc
0-80 volts dc (rec-
tified arc voltage)
V23
maximum 80 volts
ac/dc
V24
V25
24 volts dc
16.5 millivolts dc
per 1 ampere of
weld output
A
A
A
A
CR1 energizes
when open-circuit voltage
is present; denergizes
when an
arc is struck
V20
See also
Sections 6-4 and 6-5
for PC1 data
See Section 6-3
for waveform A
Resistance Values
a) Tolerance –±10% unless specified
b) Turn Off unit and disconnect input
power before checking resistance
V18
V19
CR5 energizes when
contactor is on
See Section 6-8
for ammeter A1
calibration
R1
All values for T1, Z1, and T3 are less
than 1 ohm
R2
R3
5.3 ohms
6.1 K ohms
SC-188 161
Syncrowave 250
TM-353 Page 27
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6-3. Waveforms For Section 6-2
Waveforms shown are for 60 Hertz models;
waveforms for 50 Hertz models are similar.
5 ms 1 V
5 ms 50 V
gnd
gnd
A. SR1 Gate Pulse With Respect To Cathode
At No Load
B. DC Open-Circuit Voltage With Amperage
Adjustment Control At Maximum
5 ms 20 V
5 ms 50 V
gnd
gnd
C. DC Output, 100 Amperes, 24 Volts DC
(Resistive Load)
D. AC Open-Circuit Voltage With Amperage
Adjustment Control At Maximum
TM-353 Page 28
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5 ms 50 V
gnd
E. AC Output, 100 Amperes, 24 Volts AC (Re-
sistive Load)
Test Equipment Needed:
Syncrowave 250
TM-353 Page 29
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6-4. Control Board PC1 Testing Information (Use With Section 6-5)
Y
Disable high frequency by
placing High Frequency
switch S2 in Off position
before testing unit.
Be sure plugs are secure before
testing. See Section 6-5 for specific
values during testing.
1
2
3
4
5
6
Control Board PC1
Receptacle RC51
Receptacle RC52
Receptacle RC53
Receptacle RC54
Receptacle RC55
1
2
3
4
6
5
Test Equipment Needed:
SB-178 976-A / ST-800 344-A
TM-353 Page 30
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6-5. Control Board PC1 Test Point Values
a) Tolerance
specified
–
±10% unless
PC1 Voltage Readings
b) Reference – to circuit common
(lead 42) unless noted
Receptacle
Pin
1
Value
RC51
18 volts ac input
18 volts ac input
2
3
+10 volts dc output
Circuit common
4
5
Not used
6
Not used
RC52
RC53
1
Circuit common
2
+1 millivolt dc per 3 ampere of weld output
1
Gate pulse for SCR1 with respect to pin 2 (see Section 6-3)
Reference for gate pulse to SCR1
2
3
Gate pulse for SCR3 with respect to pin 4 (see Section 6-3)
Reference for gate pulse to SCR3
4
5
Gate pulse for SCR2 with respect to pin 6 (see Section 6-3)
Reference for gate pulse to SCR2
6
7
Gate pulse for SCR4 with respect to pin 8 (see Section 6-3)
Reference for gate pulse to SCR4
8
RC54
1
Not used
2
0 to +10 volts dc input from min. to max. of Amperage Adjustment control R1 with Amperage Control
switch S5 in Panel position, and contactor on
3
4
0 volts with Output (Contactor) switch S3 in On position or +7.8 volts dc with S3 in Remote position
0 to +10 volts dc input from min. to max. of Crater Control R11 with Crater Fill switch S7 in On posi-
tion, or +10 volts dc with S7 in Off position
5
6
+10 volts dc output with Output (Contactor) switch S3 in On position
–24 volts dc
7
–24 volts dc with contactor on or off
8
0 to +10 volts dc input from min. to max. of Amperage Adjustment control R1 with contactor on
0 to +10 volts dc input from min. to max. of Amperage Adjustment control R1 with contactor on
Circuit common
9
10
11
12
+24 volts dc
0 volts during open-circuit voltage condition; +24 volts with arc on or contactor off
Syncrowave 250
TM-353 Page 31
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Receptacle
Pin
1
Value
RC55
Circuit common
2
+1.65 volts dc per 100 amperes of weld output with respect to pin 1
–15 volts dc output
3
4
0 to +4 volts dc input from min. to max. of Arc Control R2 with Arc Control switch S6 On
10 volts ac input for synchronization
5
6
+5.8 volts dc output
7
–15 volts dc input from Max. Penetration setting of AC Balance control R3 to +5.8 volts dc input at
Max. Cleaning setting of R3
8
9
0 to 80 volts dc voltage feedback signal (rectified arc voltage) with respect to pin 9
0 to 80 volts dc voltage feedback signal (rectified arc voltage) with respect to pin 8
0 to +4 volts dc input from min. to max. of Arc Control R2 with Arc Control switch S6 Off
10
TM-353 Page 32
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6-6. Remote Board PC2 Testing Information (Use With Section 6-7)
Y
Disable high frequency by
placing High Frequency
switch S2 in Off position
before testing unit.
Be sure plugs are secure before
testing. See Section 6-7 for specific
values during testing.
1
2
Remote 14 Filter Board PC2
Remote 14 receptacle RC1
See Section 3-8 for information.
3
4
Receptacle RC2
Receptacle RC3
4
1
3
2
Test Equipment Needed:
ST-157 960-B / ST-800 344-A
Syncrowave 250
TM-353 Page 33
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6-7. Remote 14 Filter Board PC2 Test Point Values (Use With Section 6-2 And Section 6-6)
a) Tolerance
specified
–
±10% unless
PC2 Voltage Readings
b) Reference – to circuit common
(lead 42) unless noted
Receptacle
Pin
A
B
C
D
E
K
1
Value
RC1
24 volts ac
Contact closure to A completes 24 volts ac contactor control circuit
Command reference; 0 to +10 volts dc output to remote control
Remote control circuit common
0 to +10 volts dc input command signal from remote control
Chassis common
RC2
Command reference; 0 to +10 volts dc output to remote control
Contact closure to A completes 24 volts ac contactor control circuit
Remote control circuit common
3
4
5
0 to +10 volts dc input command signal from remote control
24 volts ac
6
RC3
1
Chassis common
TM-353 Page 34
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6-8. Meter Calibration
Be sure plugs are secure before
calibratingmeter.
1
2
3
Control Board PC1
Voltmeter V1
No calibration available for ammeter
offset, or for voltmeter V1.
Ammeter A1
1
Top View
R19
2
3
Amperes
Adjust R19 for amperage gain to
match external calibrated meter
using load bank set at desired
load.
SB-130 690-D / ST-800 344-A
Syncrowave 250
TM-353 Page 35
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6-9. Input Voltage Labels And Connections
1
2
Input Voltage Label And Con-
nection Diagram – Only One
Label Is On Unit
Terminal Strip TE1
Test Equipment Needed:
2
1
ST-154 793-A / ST-114 947-A / ST-121 000-A / ST-131 735
TM-353 Page 36
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SECTION 7 – MAINTENANCE
7-1. Routine Maintenance
Y
Disconnectpower before maintaining.
3 Months
Clean And
Tighten
Weld
Repair Or
Replace
Cracked
Weld
Replace
Unreadable
Labels
Terminals
Cables
Adjust Spark
Gaps
Replace
Cracked
Parts
Torch Cable
14-Pin Cord
Gas Hose
6 Months
Blow Out Or Vacuum
Inside,
During Heavy Service,
Clean Monthly
OR
7-2. Circuit Breaker CB1
1
Circuit Breaker CB1
If CB1 opens, output to the 115 volts
ac duplex receptacle, high frequen-
cy, and gas flow stop. Press button
to reset breaker.
1
CB1
Ref. ST-154 795-C
Syncrowave 250
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7-3. Fuses F1 And F2
1
Fuse F1 (See Parts List For
Rating)
Fuse F1 (between leads 50 and
150) protects wiring harness from
shorted SR2. If F1 opens, you may
experience problems with arc start-
ing and arc performance in the DC
TIG mode.
1
2
2
Fuse F2 (See Parts List For
Rating)
Fuse F2 (between leads 22 and
149) protects wiring harness from
shorted SR3. If F2 opens, you may
experience problems with arc con-
trol, and no high frequency in start
high frequency.
Tools Needed:
3/8 in
7-4. Adjusting Spark Gaps
Y
Turn Off power before
adjusting spark gaps.
4
4
Open access door.
Tungsten End Of Point
1
Replace point if tungsten end dis-
appears; do not clean or dress
tungsten.
3
3
2
Spark Gap
Normal spark gap is 0.008 in (0.203
mm).
2
1
If adjustment is needed, proceed as
follows:
3
AdjustmentScrews
Loosen screws. Place gauge of
proper thickness in spark gap.
4
Pressure Point
Apply slight pressure at point until
gauge is held firmly in gap. Tighten
screws to 12 in/lbs torque (overtigh-
tening will deform plastic base). Ad-
just other gap.
Close access door.
Tools Needed:
Ref. ST-154 795-C / Ref. S-0043
TM-353 Page 38
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SECTION 8 – HIGH FREQUENCY (HF)
8-1. Welding Processes Using HF
1
HF Voltage
GTAW – helps arc jump air gap
between torch and workpiece and/
or stabilize the arc.
SAW – helps arc reach workpiece
through flux granules.
2
1
1
2
Flux
Work
Work
Gas Tungsten Arc
Welding (GTAW)
Submerged Arc
Welding (SAW)
high_freq1 7/95 – S-0693
8-2. Sources Of HF Radiation From Incorrect Installation
Weld Zone
11, 12
50 ft
(15 m)
10
14
9
8
7
3
2
13
1
4
5
6
S-0694
Sources Of Direct HF Radiation
5
6
Workpiece
Work Table
Sources Of Reradiation Of HF
10 Ungrounded Metal Objects
11 Lighting
1
HF source (welding power source with
built-in HF or separate HF unit)
Sources Of Conduction Of HF
2
3
4
Weld Cables
Torch
12 Wiring
7
8
9
Input Power Cable
13 Water Pipes And Fixtures
14 External Phone And Power Lines
Line Disconnect Device
Input Supply Wiring
Work Clamp
Syncrowave 250
TM-353 Page 39
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8-3. Correct Installation
Weld Zone
6
50 ft
(15 m)
50 ft
(15 m)
4
1
5
2
7
3
7
Ground All
Metal Objects
And All Wiring
In Welding Zone
Using #12 AWG
Wire
Ground
Workpiece
If Required
By Codes
8
Nonmetal
Building
7
7
10
Metal Building
9
Ref. S-0695 / Ref. S-0695
1
HF Source (Welder With Built-In HF Or
Separate HF Unit)
Electrically join (bond) all conduit sections
using copper straps or braided wire. Ground
conduit every 50 ft (15 m).
8
Metal Building Panel Bonding Methods
Bolt or weld building panels together, install
copper straps or braided wire across seams,
and ground frame.
Ground metal machine case, work output
terminal, line disconnect device, input
supply, and worktable.
5
Water Pipes And Fixtures
Ground water pipes every 50 ft (15 m).
External Power Or Telephone Lines
9
Windows And Doorways
2
Welding Zone And Centerpoint
Cover all windows and doorways with
grounded copper screen of not more than
1/4 in (6.4 mm) mesh.
6
A circle 50 ft (15 m) from centerpoint
between HF source and welding torch in all
directions.
Locate HF source at least 50 ft (15 m) away
from power and phone lines.
10 Overhead Door Track
Ground the track.
3
Weld Output Cables
Keep cables short and close together.
Conduit Joint Bonding And Grounding
7
Grounding Rod
Consult the National Electrical Code for
specifications.
4
TM-353 Page 40
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SECTION 9 – ELECTRICAL DIAGRAMS
. The circuits in this manual can be used for troubleshooting, but there might be minor circuit differences from your machine. Use circuit inside
machine case or contact distributor for more information.
The following is a list of all diagrams for models covered by this manual.
Model
Serial Or Style Number
Circuit Diagram
Wiring Diagram
Syncrowave 250
JJ339876 thru JJ351864
JJ351865 thru JJ365633
JJ365634 thru JJ503983
JJ503984 thru JK572897
JK572898 thru JK617846
JK617847 thru JK682713
JK682714 thru JK690986
JK690987 thru KA806712
KA806713 thru KA877024
KA877025 thru KB010829
KB010830 thru KB110694
KB110695 thru KC252675
KC252676 thru KG029204
KG029205 thru KG062109
KG062110 thru KG170300
KG170301 thru KH526230
KH526231 and following
SC-114 914
D-116 884-B♦♦
SC-120 877
SC-121 280
SC-124 314
SC-124 785-B
SC-124 785-B
SC-124 785-B
SC-132 697-A
SC-137 431
SC-135 581
SC-142 524
SC-148 144
SC-154 649-C
SC-178 835
SC-179 303-A
SC-181 109-E
SC-188 161-A
D-120 878-B♦♦
D-121 281-D♦♦
D-124 307-C♦♦
D-124 786-B♦♦
D-129 200-B♦♦
D-130 576-B♦♦
D-132 431-D♦♦
D-137 430-A♦♦
D-135 734-A♦♦
D-142 525-A♦♦
D-148 145-A♦♦
D-154 648-E♦♦
D-174 039-A♦♦
D-179 305-A♦♦
SD-181 110-F♦♦
SD-188162-A
Circuit Board PC1
JJ339876 thru JJ399987
JJ399988 thru JK682713
JK682714 thru KA797306
KA797307 thru KG062109
KG062110 thru KH508254
KH508255 and following
D-118 765♦♦
D-122 270♦♦
D-130 691-A♦♦
D-135 253♦♦
SD-178 975♦♦
SD-187644
RFC Circuit Board PC2
Remote 14 Filter Board PC2
Circuit Board PC3♦
Timer TD1
JJ365634 thru KB010829
KF959379 and following
JJ351865 and following
JJ339876 and following
JJ339876 and following
SA-121 282
SA-158 763
SA-120 872
SA-044 725-C
SA-045 288-D
Timer TD3♦
♦ Optional
♦♦ Not included in this manual
Syncrowave 250
TM-353 Page 41
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SC-114 914
Figure 9-1. Circuit Diagram For Syncrowave 250 Effective With Serial No. JJ339876 Thru JJ351864
TM-353 Page 42
Syncrowave 250
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SC-120 877
Figure 9-2. Circuit Diagram For Syncrowave 250 Effective With Serial No. JJ351865 Thru JJ365633
Syncrowave 250
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SC-121 280
Figure 9-3. Circuit Diagram For Syncrowave 250 Effective With Serial No. JJ365634 Thru JJ503983
TM-353 Page 44
Syncrowave 250
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SC-124 314
Figure 9-4. Circuit Diagram For Syncrowave 250 Effective With Serial No. JJ503984 Thru JK572897
Syncrowave 250
TM-353 Page 45
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SC-124 785-B
Figure 9-5. Circuit Diagram For Syncrowave 250 Effective With Serial No. JK572898 Thru JK690986
TM-353 Page 46
Syncrowave 250
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SC-132 697-A
Figure 9-6. Circuit Diagram For Syncrowave 250 Effective With Serial No. JK690987 Thru KA806712
Syncrowave 250
TM-353 Page 47
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SC-137 431
Figure 9-7. Circuit Diagram For Syncrowave 250 Effective With Serial No. KA806713 Thru KA877024
TM-353 Page 48
Syncrowave 250
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SC-135 581
Figure 9-8. Circuit Diagram For Syncrowave 250 Effective With Serial No. KA877025 Thru KB010829
Syncrowave 250
TM-353 Page 49
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SC-142 524
Figure 9-9. Circuit Diagram For Syncrowave 250 Effective With Serial No. KB010830 Thru KB110694
TM-353 Page 50
Syncrowave 250
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SC-148 144
Figure 9-10. Circuit Diagram For Syncrowave 250 Effective With Serial No. KB110695 Thru KC252675
Syncrowave 250
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SC-154 649-C
Figure 9-11. Circuit Diagram For Syncrowave 250 Effective With Serial No. KC252676 Thru KG029204
TM-353 Page 52
Syncrowave 250
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SC-178 835
Figure 9-12. Circuit Diagram For Syncrowave 250 Effective With Serial No. KG029205 Thru KG062109
Syncrowave 250
TM-353 Page 53
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SC-179 303-A
Figure 9-13. Circuit Diagram For Syncrowave 250 Effective With Serial No. KG062110 Thru KG170300
TM-353 Page 54
Syncrowave 250
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SC-181 109-E
Figure 9-14. Circuit Diagram For Syncrowave 250 Effective With Serial No. KG170301 Thru KH526230
Syncrowave 250
TM-353 Page 55
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SC-188 161-A
Figure 9-15. Circuit Diagram For Syncrowave 250 Effective With Serial No. KH526231 And Following
TM-353 Page 56
Syncrowave 250
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Notes
Syncrowave 250
TM-353 Page 57
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Figure 9-16. Wiring Diagram For Syncrowave 250 Effective With Serial No. KH526231 And Following
TM-353 Page 58
Syncrowave 250
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SD-188 162-A
Syncrowave 250
TM-353 Page 59
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Figure 9-17. Circuit Diagram For Control Board PC1 Effective With
Serial No. KH508255 And Following (Part 1 Of 2)
TM-353 Page 60
Syncrowave 250
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SD-187 644 (1 of 2)
Syncrowave 250
TM-353 Page 61
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Figure 9-18. Circuit Diagram For Control Board PC1 Effective With
Serial No. KH508255 And Following (Part 2 Of 2)
TM-353 Page 62
Syncrowave 250
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SD-187 644 (2 of 2)
Syncrowave 250
TM-353 Page 63
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SA-121 282
Figure 9-19. Circuit Diagram For RFC Board PC2 Effective With Serial No. JJ365634 Thru KB010829
SA-158 763
Figure 9-20. Circuit Diagram For Remote 14 Filter Board PC2
Effective With Serial No. KF959379 And Following
SA-120 872
Figure 9-21. Circuit Diagram For Optional Snubber Board PC3
Effective With Serial No. JJ351865 And Following
TM-353 Page 64
Syncrowave 250
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SA-044 725-C
Figure 9-23. Circuit Diagram For Postflow Timer Board TD1
Effective With Serial No. JJ339876 And Following
SA-045 288-D
Figure 9-22. Circuit Diagram For Optional Preflow Timer Board TD3
Effective With Serial No. JJ339876 And Following
Syncrowave 250
TM-353 Page 65
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Notes
TM-353 Page 66
Syncrowave 250
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TM-353E
January 2001
Eff. w/Serial Number JJ339876
Processes
TIG (GTAW) Welding
Stick (SMAW) Welding
Description
Arc Welding Power Source
R
Syncrowave 250
60 Hz, 50 Hz
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SECTION 10 – PARTS LIST
ST-120 135-R
. Hardware is common and
not available unless listed.
Figure 10-1. Main Assembly
TM-353 Page 68
Syncrowave 250
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Item
No.
Dia.
Mkgs.
Part
No.
Description
Figure 10-1. Main Assembly
Quantity
. 1 . . . . . . . . . . . . . 114 741 . . COVER, top (Prior to KG170301) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. 1 . . . . . . . . . . . . . 182 605 . . COVER, top (Eff w/KG170301) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. 2 . . . . SR1 . . . . 181 106 . . RECTIFIER, si diode (Fig 10-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. 3 . . . . . S4 . . . . 112 630 . . SWITCH, plrty/changeover (Prior to KA759476) . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. 3 . . . . . S4 . . . . 133 061 . . SWITCH, plrty/changeover (Eff w/KA759476) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . PLG10 . . 164 899 . . CONNECTOR & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . PLG11 . . . 168 809 . . CONNECTOR & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . C13 . . . . 155 082 . . CAPACITOR, cer disc. .003 200VAC (Prior to JK690987) . . . . . . . . . . . . . . . . . 1
. . . . . . . C13 . . . . 132 433 . . CAPACITOR, cer disc. .05uf 500VDC (Eff w/JK690987) . . . . . . . . . . . . . . . . . . . 1
. 4 . . . . . . . . . . . . . 057 357 . . BUSHING, snap-in nyl .937 ID x 1.125mtg hole . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. 5 . . . . . . . . . . . . . 010 494 . . BUSHING, snap-in nyl 1.375 ID x1.750mtg hole . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. 6 . . . . . . . . . . . . . 110 375 . . STAND-OFF SUPPORT, PC card No. 6 screw (Prior to KG170301) . . . . . . . . 3
. 6 . . . . . . . . . . . . . 134 201 . . STAND-OFF SUPPORT, PC card No. 6 screw (Eff w/KG170301) . . . . . . . . . . 3
. 7 . . . . . . . . . . . . . Fig 10-4 . . PANEL, mtg components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. 8 . . . . . . . . . . . . . 083 147 . . GROMMET, screw No. 8/10 panel hole .312sq .500 high . . . . . . . . . . . . . . . . . . 4
. 9 . . . . . . . . . . . . . 114 754 . . FRAME, lifting (Prior to KG170301) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. 9 . . . . . . . . . . . . . 181 101 . . FRAME, lifting (Eff w/KG170301) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
10 . . . . . . . . . . . . 026 627 . . GASKET, lift eye . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
11 . . . . . . . . . . . . 070 026 . . STAND-OFF, 6-32 x .437 lg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
12 . . . PC1 . . . . 117 981 . . CIRCUIT CARD, control (Prior to JJ389988) (Fig 10-5) . . . . . . . . . . . . . . . . . . . . 1
12 . . . PC1 . . . . 138 058 . . CIRCUIT CARD, control (Eff w/JJ389988 thru KB110694) (Fig 10-5) . . . . . . . . 1
12 . . . PC1 . . . . 180 014 . . CIRCUIT CARD, control (Eff w/ KB110695 thru KG060803) . . . . . . . . . . . . . . . . 1
12 . . . PC1 . . . . 187 642 . . CIRCUIT CARD, control (Eff w/KG060804) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . PLG51 . . 115 093 . . CONNECTOR PLUG & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . PLG54 . . 130 203 . . CONNECTOR PLUG & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . PLG55 . . 115 091 . . CONNECTOR PLUG & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
13 . . . R14 . . . . 138 105 . . RESISTOR, (Eff w/KB110695 thru KG062110) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
13 . . . FL1 . . . . 084 171 . . FILTER, line power 115/250V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
14 . . . HD1 . . . . 156 313 . . TRANSDUCER, current 300A (Eff w/KB110695) . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . PLG3 . . . 130 204 . . CONNECTOR & SOCKETS, (Eff w/KB110695) . . . . . . . . . . . . . . . . . . . . . . . . . . 1
15 . . . . . . . . . . . . 073 756 . . STAND-OFF, 6-32 x .625 lg (Eff w/KB110695) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
16 . . . . Z1 . . . . 114 826 . . REACTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
17 . . . . . . . . . . . . Fig 10-4 . . PANEL, rear w/components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . 109 035 . . LABEL, warning electric shock can kill etc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
18 . . C11,12 . . 111 634 . . CAPACITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . 172 078 . . BRACKET, mtg primary board (Eff w/KE727074) . . . . . . . . . . . . . . . . . . . . . . . . . 1
19 . . . TE1 . . . . 034 587 . . TERMINAL ASSEMBLY, pri (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . 601 835 . . . . NUT, brs hex 10-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
. . . . . . . . . . . . . . . . 601 836 . . . . NUT, brs hex .250-20 jam hvy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . 010 915 . . . . WASHER, flat brs .250 ID x .625 OD x .031thk . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . 083 426 . . . . TERMINAL BOARD, primary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . 038 888 . . . . STUD, primary board brs .250-20 x 1.500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . 010 913 . . . . WASHER, flat brs .218 ID x 460 OD x .031thk . . . . . . . . . . . . . . . . . . . . . . . . . 6
. . . . . . . . . . . . . . . . 038 887 . . . . STUD, primary board brs 10-32 x 1.375 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
. . . . . . . . . . . . . . . . 038 618 . . . . LINK, jumper term bd pri . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
20 . . . . . . . . . . . +114 751 . . PANEL, side (Prior to KG170301) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
20 . . . . . . . . . . . +181 097 . . PANEL, side (Eff w/KG170301 thru KG181270) . . . . . . . . . . . . . . . . . . . . . . . . . . 2
20 . . . . . . . . . . . +182 606 . . PANEL, side (Eff w/KG181271 and on) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
21 . . . . T1 . . . . 115 097 . . TRANSFORMER, pwr main 200/230/460 (Prior to KA877025) . . . . . . . . . . . . . 1
21 . . . . T1 . . . . 138 171 . . TRANSFORMER, pwr main 200/230/460 (Eff w/KA877025 thru KG082621) . 1
21 . . . . T1 . . . . 180 674 . . TRANSFORMER, pwr main 200/230/460 (Eff w/KG082622) . . . . . . . . . . . . . . . 1
21 . . . . T1 . . . . 138 175 . . TRANSFORMER, pwr main (220/380/415 (Prior to KG082622) . . . . . . . . . . . . 1
21 . . . . T1 . . . . 180 673 . . TRANSFORMER, pwr main 220/380/415 (Eff w/KG082622) . . . . . . . . . . . . . . . 1
21 . . . . T1 . . . . 121 161 . . TRANSFORMER, pwr main 230/460/575 (Prior to KA877025) . . . . . . . . . . . . . 1
21 . . . . T1 . . . . 138 172 . . TRANSFORMER, pwr main 230/460/575 (Eff w/KA877025 thru KG082621) . 1
21 . . . . T1 . . . . 180 672 . . TRANSFORMER, pwr main 230/460/575 (Eff w/KG082622) . . . . . . . . . . . . . . . 1
21 . . . . T1 . . . . 191 887 . . TRANSFORMER, pwr main 260/380/520 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . TP1 . . . . 020 520 . . THERMOSTAT, NC (included w/transformer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . TP2 . . . . 168 891 . . THERMOSTAT, NC (Eff w/KG170301) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Syncrowave 250
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Figure 10-1. Main Assembly (Continued)
22 . . . . . . . . . . . . 114 755 . . BASE, (Prior to KE727074) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
22 . . . . . . . . . . . . 170 748 . . BASE, (Eff w/KE727074 thru KF959176) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
22 . . . . . . . . . . . . 171 677 . . BASE, (Eff w/KF959177) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
23 . . . . . . . . . . . . 157 196 . . INSULATOR, upright (Eff w/KC307050) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
24 . . . . . . . . . . . . 010 199 . . TUBING, stl .500 OD x 17ga x 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
25 . . . . . . . . . . . . 108 105 . . CLAMP, capacitor 2.500dia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
26 . . . . C2 . . . . 031 668 . . CAPACITOR, elctlt 4000uf 100VDC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
27 . . . . R5 . . . . 117 803 . . RESISTOR, WW fxd 10W 1K ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
28 . . . . . . . . . . . . 114 722 . . BRACKET, mtg rectifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
29 . . . . . . . . . . . . Fig 10-2 . . PANEL, front w/components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
30 . . . . . . . . . . . . 098 376 . . FUSE, holder (Eff w/KH526231) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
31 . . . F1,2 . . . . 085 874 . . FUSE, mintr gl slo-blo 10A (Eff w/KH526231) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . 092 368 . . TUBING, stl .250 ID x 16ga x 3 (Prior to JK682714) . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . 130 764 . . TUBING, stl .250 ID x 16ga wall x 1.500 (Eff w/JK682714) . . . . . . . . . . . . . . . . 1
+When ordering a component originally displaying a precautionary label, the label should also be ordered.
BE SURE TO PROVIDE MODEL AND SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.
TM-353 Page 70
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9
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2
4
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6
1
7
3
4
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Includes
Item 26
14
29
28
27
15
1
16
26
25
17
24 23 22
18
Figure 10-6
19
21
20
ST-120 088-G
Figure 10-2. Panel, Front w/Components
Item
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Part
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Quantity
Figure 10-2. Panel, Front w/Components (Fig 10-1 Item 29)
. . . 1 . . . . . . . . . . . . . 097 922 . . KNOB, pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
. . . 2 . . . . . . . . . . . . . . . . . . . . . . . . NAMEPLATE, (order by model & serial number) . . . . . . . . . . . . . . . . . . . . . 1
. . . 3 . . . . . . . . . . . . . 109 013 . . BUSHING, snap-in nyl .375 ID x .562mtg hole . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 4 . . . . S6,7 . . . 089 085 . . SWITCH, tgl SPST 20A 125VAC (Prior to KF988252) . . . . . . . . . . . . . . . . 2
. . . 4 . . . . S6,7 . . . 176 882 . . SWITCH, tgl SPST 20A 125VAC (Eff w/KF988252) . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . 107 983 . . BLANK, snap-in nyl .500mtg hole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 057 359 . . BLANK, snap-in nyl .375mtg hole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . 5 . . . . . R3 . . . . 030 109 . . POTENTIOMETER, C sltd sft 1/T 2W 5000 ohm . . . . . . . . . . . . . . . . . . . . 1
. . . 6 . . . . . R11 . . . 030 684 . . POTENTIOMETER, C sltd sft 1/T 2W 5 meg ohm . . . . . . . . . . . . . . . . . . . 1
. . . 7 . . . . R1,2 . . . 035 897 . . POTENTIOMETER, C sltd sft 1/T 2W 1000 ohm . . . . . . . . . . . . . . . . . . . . 2
. . . 8 . . . . . S5 . . . . . 011 609 . . SWITCH, tgl SPDT 15A 125VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 9 . . . . . S3 . . . . 052 769 . . SWITCH, tgl 4PDT 15A 125VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 10 . . . . . S2 . . . . . 011 610 . . SWITCH, tgl SPDT 15A 125VAC (Prior to JJ503984) . . . . . . . . . . . . . . . . . 1
. . . 10 . . . . . S2 . . . . 088 409 . . SWITCH, tgl 2PDT 15A 125VAC (Eff w/JJ503984) . . . . . . . . . . . . . . . . . . . 1
. . . 11 . . . . TD1 . . . 052 192 . . TIMER, delay on make - postflow (consisting of) . . . . . . . . . . . . . . . . . . . . . 1
. . . 12 . . . . . . . . . . . . . 039 449 . . . . BRACKET, mtg - circuit card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
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Part
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Figure 10-2. Panel, Front w/ Components (Continued)
. . . 13 . . . . . . . . . . . . . 044 723 . . . . CIRCUIT CARD, postflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 14 . . . . . S1 . . . . 045 834 . . SWITCH, tgl DPST 60A 600VAC (Prior to KA759476) . . . . . . . . . . . . . . . . 1
. . . 14 . . . . . S1 . . . . 128 757 . . SWITCH, tgl DPST 60A 600VAC (Eff w/KA759476) . . . . . . . . . . . . . . . . . . 1
. . . 15 . . . . . . . . . . . . . 106 398 . . PIN, spring CS .156 x .625 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 16 . . . . . . . . . . . . . . 114 721 . . SHAFT, extension switch (Prior to KA759476) . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 16 . . . . . . . . . . . . . 133 276 . . EXTENSION, handle switch (Eff w/KA759476 thru KF959378) . . . . . . . . 1
. . . 16 . . . . . . . . . . . . . 171 420 . . EXTENSION, handle switch (Eff w/KF959379) . . . . . . . . . . . . . . . . . . . . . . 1
. . . 17 . . . . . . . . . . . . . 164 481 . . PANEL, front (Prior to KF959379) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 17 . . . . . . . . . . . . . 169 476 . . PANEL, front (Eff w/KF959379 thru KG170300) . . . . . . . . . . . . . . . . . . . . . 1
. . . 17 . . . . . . . . . . . . . 181 096 . . PANEL, front (Eff w/KG170301) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 18 . . . . . . . . . . . . . . . . . . . . . . . . CONTROL PANEL, lower front (Fig 10-6) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 19 . . . . . . . . . . . . . 128 230 . . LABEL, warning electric shock etc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 19 . . . . . . . . . . . . . 134 327 . . LABEL, warning electric shock etc CE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 20 . . . . . . . . . . . . +114 759 . . DOOR, access front (Prior to KG170301) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 20 . . . . . . . . . . . . +181 589 . . DOOR, access front (Eff w/KG170301) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 605 583 . . CATCH, spring loaded door (Prior to KG170301) . . . . . . . . . . . . . . . . . . . . 1
. . . 21 . . . . . . . . . . . . . 134 327 . . LABEL, warning general precautionary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 21 . . . . . . . . . . . . . 176 254 . . LABEL, warning general precautionary CE . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 22 . . . . . PL2 . . . 157 958 . . LIGHT, ind wht lens 28V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 23 . . . . . PL1 . . . 155 500 . . LED, yellow (50 Hz model) (Eff w/ KG060803) . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . PLG5 . . . 135 635 . . CONNECTOR & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . PLG6 . . . 131 054 . . CONNECTOR & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 24 . . . . . . . . . . . . . 010 647 . . PIN, spring CS .156 x 1.250 (Prior to KF959379) . . . . . . . . . . . . . . . . . . . . 1
. . . 24 . . . . . . . . . . . . . 169 136 . . PIN, handle (Eff w/KF959379) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 25 . . . . . . . . . . . . . 098 279 . . HANDLE, plrty/changeover switch (Prior to KF959379) . . . . . . . . . . . . . . . 1
. . . 25 . . . . . . . . . . . . . 169 135 . . HANDLE, switch (Eff w/KF959379) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 26 . . . . . . . . . . . . . 052 370 . . . . KNOB, indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 27 . . . . . . . . . . . . . 097 924 . . KNOB, pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 28 . . . . . . . . . . . . ♦115 920 . . METER, amp AC/DC 100MV 0-300 scale . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 29 . . . . . . . . . . . . ♦004 189 . . METER, volt AC/DC 0–100 scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
+When ordering a component originally displaying a precautionary label, the label should also be ordered.
♦OPTIONAL
BE SURE TO PROVIDE MODEL AND SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.
TM-353 Page 72
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Part
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Figure 10-3. Rectifier, Si Diode (Fig 10-1 Item 2)
. . . 1 . . . . C7-10 . . 031 689 . . CAPACITOR, rectifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . 2 . . . . . . . . . . . . . 083 884 . . CLAMP, thyristor rectifier (Prior to KG023560) . . . . . . . . . . . . . . . . . . . . . . . 2
. . . 2 . . . . . . . . . . . . . 166 667 . . CLAMP, spring rectifier (Eff w/KG023560) . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . 3 . . . . . D1 . . . . 037 956 . . DIODE, rect 275A 300V SP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 4 . . . . TP3 . . . 168 898 . . THERMOSTAT, NC open 125°C (Eff w/KG170301) . . . . . . . . . . . . . . . . . . 1
. . . 5 . . . SCR1-4 . . . 115 114 . . THYRISTOR, SCR 300A 300V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . 6 . . . . . . . . . . . . . 176 645 . . CLAMP, thyristor w/o thermostat (Eff w/KG023560) . . . . . . . . . . . . . . . . . . 2
. . . 6 . . . . . . . . . . . . . 173 714 . . CLAMP, thyristor with thermostat (Eff w/KG170030) . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . 028 516 . . PIN, spring CS .125 x .250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . PLG53 . . . 115 092 . . CONNECTOR & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3
2
4
2
1
5
ST-120 205-A
6
5
Figure 10-3. Rectifier, Si Diode
Item
No.
Dia.
Mkgs.
Part
No.
Description
Quantity
Figure 10-4. Panel, Rear w/Components (Fig 10-1 Item 17)
. . . 1 . . . . . R4 . . . . 186 949 . . RESISTOR, WW fxd 175W 20 ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 2 . . . . . . . . . . . . . 032 604 . . BLADE, fan 14 in 3 wing 19deg .375 bore CCW (Prior to KG198783) . . . 1
. . . 2 . . . . . . . . . . . . . 180 165 . . BLADE, fan 14 in 3 wing 19deg .375 bore CCW (Eff w/KG198783) . . . . . 1
. . . 3 . . . . . . . . . . . . . . 114 752 . . PANEL, rear (Prior to KG170301) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 3 . . . . . . . . . . . . . 181 099 . . PANEL, rear (Eff w/KG170301) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 4 . . . . . . . . . . . . . 131 361 . . CHAMBER, plenum 14 in (Prior to KG128812) . . . . . . . . . . . . . . . . . . . . . . 1
. . . 4 . . . . . . . . . . . . . 173 283 . . CHAMBER, plenum 14 in (Eff w/KG128812) (50 Hz only) . . . . . . . . . . . . . 1
. . . 5 . . . . . . . . . . . . . 124 274 . . BRACKET, mtg fan motor (Eff w/KG128812) . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 6 . . . . . FM . . . . . 116 190 . . MOTOR, 1/12 hp 230V 1550 RPM 50/60Hz 1.5A . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 026 947 . . STAND-OFF, insul .250-20 x 1.000 lg (Prior to KB110695) . . . . . . . . . . . . 2
. . . . . . . . . . Shunt . . . . 114 723 . . SHUNT, (Prior to KB110695) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 176 272 . . CONNECTOR, clamp cable (50 Hz model) (Eff w/KG060803) . . . . . . . . . 1
2
3
1
4
ST-120 089-F
6
5
Figure 10-4. Panel, Rear w/Components
BE SURE TO PROVIDE MODEL AND SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.
Syncrowave 250
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Item
No.
Dia.
Mkgs.
Part
No.
Description
Quantity
Figure 10-5. Panel, Mtg Components (Fig 10-1 Item 7)
. . 1 . . . . . R7 . . . . . 186 468 . . RESISTOR, WW fxd 100W 50 ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . 2 . . . . . . . . . . . . . . . 117 721 . . PANEL, mtg relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . 3 . . . CR2,6 . . . . . 110 386 . . RELAY, encl 24VAC DPDT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . 4 . . . . . 2T . . . . . 072 253 . . STUD, single connection 10-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . 5 . . . SR2,3 . . . . 035 704 . . RECTIFIER, integ 40A 800V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . 6 . . . SN1,2 . . . . . 118 625 . . SNUBBER, poly metal film .5uf 200VDC 100 ohm . . . . . . . . . . . . . . . . . . . 2
. . 7 . . . . . R6 . . . . . . 117 803 . . RESISTOR, WW fxd 10W 1K ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . 8 . . . . C20 . . . . . . 119 834 . . CAPACITOR, cer disc .05uf 500V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . 9 . . . . . 1T . . . . . . 117 372 . . BLOCK, term 10A 15P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 108 023 . . LINK, jumper term blk 10A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
. . 10 . . . CR5 . . . . . 000 770 . . RELAY, encl 24VDC 3PDT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . 11 . . . CR1 . . . . . 052 964 . . RELAY, encl 24VDC DPDT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1
2
11
3
10
3
6
4
5
6
9
8
7
ST-120 090-F
Figure 10-5. Panel, Mtg Components
BE SURE TO PROVIDE MODEL AND SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.
TM-353 Page 74
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15
14
17
5
16
13
3
6
2
4
7
8
11
1
9
10
18
23
22
19
21
ST-120 003-P
20
Figure 10-6. Control Panel, Lower Front
Item
No.
Dia.
Mkgs.
Part
No.
Description
Quantity
Figure 10-6. Control Panel, Lower Front (Fig 10-2 Item 18)
. . . . . . . . . . . . . . . . . . . . 116 477 . . CONTROL PANEL, lower (Prior to JK572898) . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 124 647 . . CONTROL PANEL, lower (Eff w/JK572898 thru JK682712) . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 131 217 . . CONTROL PANEL, lower (Eff w/JK682714 thru JK690986) . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 132 430 . . CONTROL PANEL, lower (Eff w/JK690987 thru KA806713) . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 137 516 . . CONTROL PANEL, lower (Eff w/KA806713 thru KA877024) . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 147 793 . . CONTROL PANEL, lower (Eff w/KA877025 thru KF959378) . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 174 067 . . CONTROL PANEL, lower (Eff w/KF959379 thru KG170300) . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 181 108 . . CONTROL PANEL, lower (Eff w/KG170301) . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 1 . . . . . . . . . . . . . . 114 742 . . PANEL, lower front (Prior to JK572898) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 1 . . . . . . . . . . . . . 124 784 . . PANEL, lower front (Eff w/JK572898 thru JK690986) . . . . . . . . . . . . . . . . . 1
. . . 1 . . . . . . . . . . . . . 130 582 . . PANEL, lower front (Eff w/JK690987 thru KB093120) . . . . . . . . . . . . . . . . . 1
. . . 1 . . . . . . . . . . . . . 147 795 . . PANEL, lower front (Eff w/KB093121 thru KF959176) . . . . . . . . . . . . . . . . 1
. . . 1 . . . . . . . . . . . . . 171 652 . . PANEL, lower front (Eff w/KF959177) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 2 . . . . R25 . . . 137 429 . . RESISTOR, C 2W 3.3K ohm (Eff w/KA806713) . . . . . . . . . . . . . . . . . . . . . 1
Syncrowave 250
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Item
No.
Dia.
Mkgs.
Part
No.
Description
Quantity
Figure 10-6. Control Panel, Lower Front (Continued)
. . . 3 . . . . . . . . . . . . . 126 750 . . CAPACITOR ASSEMBLY, (Eff w/JK537589 thru JK690986) . . . . . . . . . . . 1
. . . 3 . . . . C14 . . . 098 566 . . CAPACITOR, (Prior to JK537589) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 3 . . . . C14 . . . 132 433 . . CAPACITOR, (Eff w/JK690987) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
. . . . . . . . . . . . . . . . . . . 121 270 . . RECEPTACLE/CAPACITOR,w/leads (Prior to JK682714)
(consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . RC2 . . . 035 523 . . . . CONNECTOR, circ 5skt rcpt Amphenol MS-3102A-16S-8S . . . . . . . . . 1
. . . . . . . . . C16-19 . . . 119 856 . . . . CAPACITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . PC2/RFC1 121 273 . . . . CIRCUIT CARD, snubber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 039 273 . . CONNECTOR, circ 5 pin size 16S plug Amphenol MS-3106A-16S-8P
. . . . . . . . . . . . . . . . . . . 039 685 . . CONNECTOR, circ clamp str rlf size 16 Amphenol 97-3057-8
. . . . . . . . . . . . . . . . . . . 142 523 . . CONNECTOR/CAPACITOR, w/leads (Eff w/JK674521 thru
KF959378) (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . RC2 . . . 143 976 . . . . CONNECTOR w/SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . C16 . . . 143 899 . . . . LEAD ASSY, elect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . C17 . . . 143 897 . . . . LEAD ASSY, elect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . C18 . . . 143 898 . . . . LEAD ASSY, elect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . C19 . . . 143 900 . . . . LEAD ASSY, elect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . RFC1/PC2 142 522 . . . . CHOKE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 4 . . PC2/RC1 . 157 959 . . CIRCUIT CARD ASSEMBLY, (Eff w/KF959379) (consisting of) . . . . . . . . 1
. . . . . . . . . PLG21 . . 153 501 . . . . CONNECTOR & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 134 734 . . CONNECTOR, circ 14 pin size 20 plug Amp 213571-2
. . . . . . . . . . . . . . . . . . . 079 534 . . CONNECTOR, circ skt push-in 14-18ga Amp 66358-6
. . . . . . . . . . . . . . . . . . . 079 739 . . CONNECTOR, circ clamp str rlf size 17-20 Amp 206322-2
. . . 5 . . . . . C6 . . . . 164 290 . . CAPACITOR, polyp film 3.5uf 600VDC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 6 . . . . PLG3 . . . 131 204 . . CONNECTOR & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 7 . . . . RC2 . . . 604 176 . . RECEPTACLE, straight duplex grd 2P3W 15A 125V . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 073 690 . . CAP, straight P & S 2P3W 5266 DF
. . . 8 . . . . C15 . . . 170 920 . . CAPACITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 9 . . . . CB1 . . . 093 995 . . CIRCUIT BREAKER, man reset 1P 15A 250V . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 10 . . . . R13 . . . 605 828 . . RHEOSTAT, WW 50W 1.5 ohm (Prior to KG170301) . . . . . . . . . . . . . . . . . 1
. . . 10 . . . . R13 . . . 174 037 . . RHEOSTAT, WW 50W 1.5 ohm (Eff w/KG170301 thru LA292998) . . . . . 1
. . . 10 . . . . R13 . . . 198 547 . . RHEOSTAT, WW 25W 1.5 ohm (Eff w/LA292999) . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 010 493 . . BUSHING, snap-in nyl .625 ID x .875 mtg hole . . . . . . . . . . . . . . . . . . . . . . 1
. . . 11 . . . . . . G . ♦♦020 623 . . SPARK GAP ASSEMBLY (Prior to LA337284) . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . ♦♦095 621 . . . . BASE, spark gap (Prior to LA337284) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . ♦♦020 622 . . . . HOLDER, points (Prior to LA337284) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . ♦♦*020 603 . . . . POINT, spark gap (Prior to LA337284) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . 11 . . . . . . G . ♦♦203 419 . . SPARK GAP ASSEMBLY SERVICE KIT (for units prior to LA337284)) . 1
. . . 11 . . . . . . G . ♦♦199 854 . . SPARK GAP ASSEMBLY (Eff w/LA337284) . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . ♦♦199 855 . . . . BASE, spark gap (Eff w/LA337284) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . ♦♦199 856 . . . . HOLDER, points (Eff w/LA337284) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . ♦♦*196 455 . . . . POINT, spark gap (Eff w/LA337284) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . . . . 088 731 . . BUSHING, snap-in nyl .375 ID x .500mtg hole . . . . . . . . . . . . . . . . . . . . . . . 2
. . . 12 . . . . . . . . . . . . . 097 712 . . STRIP, insulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 13 . . . . . . . . . . . . . 174 070 . . BRACKET, mtg components (Eff w/KG959379) . . . . . . . . . . . . . . . . . . . . . . 1
. . . 14 . . . . . C3 . . . . 106 935 . . CAPACITOR, polyp film 10uf 250VAC (Prior to KK001554) . . . . . . . . . . . . 1
. . . 14 . . . . . C3 . . . . 191 944 . . CAPACITOR, polyp film 10uf 250VAC (Eff w/KK001554) . . . . . . . . . . . . . . 1
. . . 15 . . . . . R8 . . . . 083 784 . . RESISTOR, WW fxd 100W 10 ohm (Prior to KG170301) . . . . . . . . . . . . . 1
. . . 15 . . . . . R8 . . . . 181 107 . . RESISTOR ASSEMBLY w/LEADS, (Eff w/KG170301) . . . . . . . . . . . . . . . . 1
. . . 16 . . . . . C4 . . . . 096 761 . . CAPACITOR, mica .002uf 10000V (CE Models Only) . . . . . . . . . . . . . . . . 1
. . . 16 . . . . . C4 . . . . 096 761 . . CAPACITOR, mica .002uf 10000V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (Prior to KK001554 for nonCE Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 16 . . . . . C4 . . . . 201 197 . . CAPACITOR, polyp met film .002uf 10000VDC/4400VAC pnl mtg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (Eff w/KK001554 for nonCE Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 000 681 . . STRIP, mtg HF coil (Prior to JK572898) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 124 649 . . STRIP, mtg HF coil (Eff w/JK572898) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 000 682 . . TUBING, fiber vulc .250 ID x .312 OD x .812 (Prior to JK572898) . . . . . . 2
. . . . . . . . . . . . . . . . . . . 125 949 . . TUBING, fiber vulc .250 ID x .312 OD x 1.125 (Eff w/JK572898) . . . . . . . 2
. . . 17 . . . . . T2 . . . . 074 398 . . TRANSFORMER, high voltage 115V pri 3600V sec 30mA . . . . . . . . . . . . 1
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Item
No.
Dia.
Mkgs.
Part
No.
Description
Quantity
Figure 10-6. Control Panel, Lower Front (Fig 10-2 Item 18) (Continued)
. . . 18 . . . . . T3 . . . . . 115 967 . . COIL, HF coupling (Prior to JK572898) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 18 . . . . . T3 . . . . 124 650 . . COIL, HF coupling (Eff w/JK572898 thru KF959378) . . . . . . . . . . . . . . . . . 1
. . . 18 . . . . . T3 . . . . 174 692 . . COIL, HF coupling (Eff w/KF959379) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . R9 . . . . 030 603 . . RESISTOR, WW fxd 10W 10K ohm (Prior to KA877025) . . . . . . . . . . . . . 1
. . . 19 . . . . Work
Electrode . 039 047 . . TERMINAL, power output (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . 601 976 . . . . SCREW, stl hexhd .500-13 x 1.500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 039 049 . . . . TERMINAL BOARD, red . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 601 880 . . . . NUT, stl hex jam .500 -13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 039 044 . . . . BUS BAR, term bd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 601 879 . . . . NUT, stl hex full fnsh .500-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 20 . . . . GS1 . . . 174 036 . . VALVE, w/fittings & leads (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 010 296 . . . . FITTING, hose brs elbow M 1/4NPT x .625-18 . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . 035 601 . . . . VALVE, 115VAC 2 way 1/4 IPS port 1/8 orf . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . PLG4 . . . 131 203 . . CONNECTOR & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 21 . . . . . . . . . . . . . 174 038 . . PANEL, door access HF (Eff w/KF959379) . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 22 . . . . . . . . . . . . . 097 922 . . KNOB, pointer (Eff w/JK572898) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 23 . . . . . . . . . . . . . 010 357 . . SPEED NUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . 24 . . . . . . . . . . . . . 605 742 . . CLIP, mtg resistor .500 ID core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
*Recommended Spare Parts
♦♦Effective with Serial No.LA337284, Spark Gap Assembly 020 623 consisting of: Base 095 621, Holder 020 622,
and Points 020 603, is no longer available. If replacement parts are needed for any units with a Serial No. prior to
LA337284, you must first order and install Spark Gap Assembly Service Kit 203 419. To replace spark gap parts in
units with Serial No. LA337284 and following, or for units with Spark Gap Assembly Service Kit 203 419 installed, order
appropriate spark gap parts listed above as, eff/w Serial No. LA337284.
BE SURE TO PROVIDE MODEL AND SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.
Syncrowave 250
TM-353 Page 77
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Eff w/KE558763 the Water Valve Option (042 138) is no longer available
and all other options are available as Field Options only.
Dia.
Mkgs.
Part
No.
Description
Optional Equipment
Quantity
. . . . . . . . . . . . . . . . . . . . . . 042 138 . . WATER VALVE, (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . WSI . . . . . . . . . 035 601 . . . . VALVE, 115VAC 2 way 1/4 IPS port 1/8 orf . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . 010 295 . . . . FITTING, pipe brs elbow M 1/4NPT x .625-18 . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . . . . 116 201 . . . . BRACKET, mtg valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . 042 140 . . METER KIT, (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . A . . . . . . . . . . 115 920 . . . . METER, amp AC/DC 100MV 0-300 scale . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . V . . . . . . . . . . 004 189 . . . . METER, volt AC/DC 0-100 scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . 131 054 . . . . CONNECTOR & SOCKETS, (consisting of) . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . 113 746 . . . . . . CONNECTOR, rect skt 24-18ga Molex 39-00-0038 . . . . . . . . . . . . 8
. . . . . . . . . . . . . . . . . . . . . . 042 142 . . SPOT TIMER, (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . CR3 . . . . . . . . . 006 393 . . . . RELAY, encl 24VAC DPDT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . RFC,VR1/PC3 . . . . . 120 875 . . . . CIRCUIT CARD, snubber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . R10 . . . . . . . . . 030 108 . . . . POTENTIOMETER, C sltd sft 1/T 2W 100K ohm . . . . . . . . . . . . . . . 1
. . . . . . . . S8 . . . . . . . . . . . 011 611 . . . . SWITCH, tgl DPDT 15A 125V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . TD2 . . . . . . . . . 047 133 . . . . RELAY, delay adj 120VAC DPDT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . 097 922 . . . . KNOB, pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . 042 144 . . PRE-FLOW TIMER, (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . CR4 . . . . . . . . . 006 393 . . . . RELAY, encl 24VAC DPDT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . R12,S9 . . . . . . . . 115 862 . . . . POTENTIOMETER, C sltd sft 1/T .50W 500K ohm . . . . . . . . . . . . . . 1
. . . . . . . . TD3 . . . . . . . . . 116 476 . . . . TIMER, delay on make - preflow (consisting of) . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . 115 856 . . . . . . CIRCUIT CARD, preflow (consisting of) . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . A50 . . . . . . . . . 008 971 . . . . . . . . IC, linear 741 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . C50 . . . . . . . . . 039 482 . . . . . . . . CAPACITOR, elctlt 100uf 35VDC . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . C51 . . . . . . . . . 091 378 . . . . . . . . CAPACITOR, tantlm 33uf 35VDC . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . C52 . . . . . . . . . 039 481 . . . . . . . . CAPACITOR, elctlt 3.3uf 50VDC . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . C53 . . . . . . . . . 031 677 . . . . . . . . CAPACITOR, elctlt 5.6uf 35VDC . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . C54 . . . . . . . . . 166 199 . . . . . . . . CAPACITOR, cer disc .05uf 500VDC . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . CR50 . . . . . . . . 039 486 . . . . . . . . RELAY, encl 24VDC SPDT 2.5A . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . D50,51 . . . . . . . . 026 202 . . . . . . . . DIODE, rect 1A 400V SP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . . Q50 . . . . . . . . . 000 088 . . . . . . . . TRANSISTOR, NPN 800mA 400V . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . R50 . . . . . . . . . 074 121 . . . . . . . . RESISTOR, C 2W 3.3K ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . R52 . . . . . . . . . 108 432 . . . . . . . . RESISTOR, MF .25W 2.21K ohm . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . R53 . . . . . . . . . 000 342 . . . . . . . . POTENTIOMETER, cermet trmr 1/T .5W 5K ohm . . . . . . . . . . . 1
. . . . . . . . R54 . . . . . . . . . 093 030 . . . . . . . . RESISTOR, MF .25W 15K ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . R55 . . . . . . . . . 028 273 . . . . . . . . RESISTOR, C .5W 2.7K ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . R56 . . . . . . . . . 093 037 . . . . . . . . RESISTOR, MF .25W 47.5K ohm . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . R57 . . . . . . . . . 605 919 . . . . . . . . RESISTOR, C .25W 47 ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . 039 449 . . . . . . BRACKET, mtg circuit card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . 097 922 . . . . KNOB, pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . 042 353 . . POWER FACTOR CORRECTION, (consisting of) . . . . . . . . . . . . . . . . 1
. . . . . . . . C1 . . . . . . . . . . 125 781 . . . . CAPACITOR, polyp film 150uf 250VAC . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . . . . . . . 129 201 . . . . BRACKET, mtg capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
TM-353 Page 78
Syncrowave 250
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Call
1-800-4-A-
MILLER
for your local
Miller distribu-
tor.
Miller Electric Mfg. Co.
An Illinois Tool Works Company
1635 West Spencer Street
Appleton, WI 54914 USA
International Headquarters–USA
Phone: 920-735-4505
USA & Canada FAX: 920-735-4134
International FAX: 920-735-4125
European Headquarters –
United Kingdom
Phone: 44 (0) 1204-593493
FAX: 44 (0) 1204-598066
PRINTED IN USA
1998 Miller Electric Mfg. Co.
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