MIG 175
Item# 164612
OPERATOR’S MANUAL
Read carefully and understand RULES FOR SAFE OPERATION and instructions before
operating. Failure to follow the safety rules and other basic safety precautions may
result in serious personal injury.
MIG175WelderManualCover.indd
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Operator’s Manual
Read and save these instructions.
Do not use your welder before reading this manual.
INDEX
1. General Welding Safety
1.1 Your Welding Environment
1.2 Your Welder’s Condition
1.3 Use Of Your Welder
2
2
2
2
3
4. Welder Specifications
4.1 Technical Data
8
8
4.2 Structure Of Welder
4.3 Illustration Of Complete Assembly
5. Installation
8-9
10
10
10
10
11
11
1.4 Specific Areas of Danger, Caution or
Warning
5.1 Electrical Connection
5.2 Gas Connection
1.4A Electrical Shock
3
3
4
1.4B Fumes And Gases
5.3 Wire Feed System Connection
5.4 Gun Connection
1.4C UV & IR Arc Rays
1.4D Fire Hazards
5.5 Connection Of The Gun Trigger Leads 11
And Ground Cable
1.4E Hot Materials
4
5
5
5
5
5
6
6
6
6
6
6
7
1.4F Sparks, Flying Debris
1.4G Electromagnetic Fields
1.4H Shielding Gas, Cylinders Can Explode
1.4I Proper Maintenance And Repair
1.4J Proposition 65
6. Operation
11
12
12
12
12
13
13
14
15
16
16
16
17
6.1 Work piece Cleaning Before Welding
6.2 Adjustment And Test Before Welding
6.3 Welding
6.4 Maintenance And Service
7. Troubleshooting
7.1 Troubleshooting
2. Product Description
3. Technical Specifications
3.1 Proper Environment For The Welder
3.2 Requirement For Power Supply
3.3 Standards For The Welder
3.4 MIG Gun Illustration
7.2 Common Weld Defects
8. Circuit Chart
9. Packing List
10. Transport And Storage
11. Quality Guarantee
12. Illustrated Parts List
3.5 Symbol Explanation
Dear Owner:
Thank you for purchasing the MIG 175 wire feed welder. It is designed to provide years of service
for you.
This manual is designed to help you safely and effectively operate your welder.
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1. General Welding Safety
WARNING!
*Welding can cause serious injury or death. Only qualified people should operate, repair or install this welder.
Read this manual before use of the welder.
WARNING!
1.1 Your Welding Environment
-Keep the environment you will be welding in free from flammable materials.
-Always keep a fire extinguisher accessible to your welding environment.
-Always have a qualified person install and operate this equipment.
-Make sure the area is clean, dry and ventilated. Do not operate the welder in humid, wet or poorly ventilated
areas.
-Always have your welder maintained by a qualified technician in accordance with local, state and national codes.
-Always be aware of your work environment. Be sure to keep other people, especially children, away from you
while welding.
-Keep harmful arc rays shielded from the view of others.
-Mount the welder on a secure bench or cart that will keep the welder secure prevent it from tipping over or
falling.
1.2 Your Welder’s Condition
-Check all cables, power cord and MIG gun to be sure the insulation is not damaged. Always replace or repair
damaged components before using the welder.
-Check all components to ensure they are clean and in good operating condition before use.
1.3 Use of Your Welder
DANGER
Do not operate the welder if the MIG gun, wire or wire feed system is wet. Do not immerse gun or wire in water.
These components and the welder must be completely dry before attempting to use it.
-Follow the instructions in this manual.
-Keep welder in the off position when not in use.
-Connect ground lead as close to the area being welded as possible to ensure a good ground.
-Do not allow any body part to come in contact with the welding wire if you are in contact with the material being
welded, ground or electrode from another welder.
-Do not weld if you are in an awkward position. Always have a secure stance while welding to prevent accidents.
Wear a safety harness if working above ground.
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-Do not drape cables over or around your body.
-Wear a full coverage helmet with shade (see ANSI Z87.1 safety standard) and safety glasses while welding.
-Wear proper gloves and protective clothing to prevent your skin from being exposed to hot metals, UV and IR
rays.
-Do not overuse or overheat your welder. Allow proper cooling time between duty cycles.
-Keep hands and fingers away from moving parts and stay away from the drive rolls.
-Do not point MIG gun at any body part of yourself or anyone else.
-Always use this welder in the rated duty cycle to prevent excessive heat and failure.
1.4 Specific Areas of Danger, Caution or Warning
1.4A Electrical Shock
Electric arc welders can produce a shock that can cause injury or death. Touching electrically
live parts can cause fatal shocks and severe burns. While welding, all metal components connected
to the wire are electrically hot. Poor ground connections are a hazard, so secure the ground lead
before welding.
-Wear dry protective apparel: coat, shirt, gloves and insulated footwear.
-Insulate yourself from the work piece. Avoid contacting the work piece or ground.
- Do not attempt to repair or maintain the welder while the power is on.
-Inspect all cables and cords for any exposed wire and replace immediately.
-Use recommended replacement cables and cords.
-Always attach ground clamp to the work piece work table as close to the weld area as possible.
-Do not touch the welding wire and the ground or grounded work piece at the same time.
-Do not use a welder to thaw frozen pipes.
1.4B Fumes and Gases
-Fumes emitted from the welding process displace clean air and can result in injury or death.
-Do not breathe in fumes emitted by the welding process. Make sure your breathing air is clean
and safe.
-Work only in a well-ventilated area or use a ventilation device to remove welding fumes from the
environment where you will be working.
-Do not weld on coated materials (galvanized, cadmium plated or containing zinc, mercury or barium). They
will emit harmful fumes that are dangerous to breathe. If necessary use a ventilator, respirator with air supply or
remove the coating from the material in the weld area.
-The fumes emitted from some metals when heated are extremely toxic. Refer to the material safety data sheet for
the manufacturer’s instructions.
-Do not weld near materials that will emit toxic fumes when heated. Vapors from cleaners, sprays and degreasers
can be highly toxic when heated.
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1.4C UV and IR Arc Rays
WARNING
The welding arc produces ultraviolet (UV) and infrared (IR) rays that can cause injury to your
eyes and skin. Do not look at the welding arc without proper eye protection.
-Always use a helmet that covers your full face from the neck to top of head and to the back of
each ear.
-Use a lens that meets ANSI standards and safety glasses. For welders under 160 Amps output, use a shade 10
lens; for above 160 Amps, use a shade 12. Refer to the ANSI standard Z87.1 for more information.
-Cover all bare skin areas exposed to the arc with protective clothing and shoes. Flame-retardant cloth or leather
shirts, coats, pants or coveralls are available for protection.
-Use screens or other barriers to protect other people from the arc rays emitted from your welding.
-Warn people in your welding area when you are going to strike an arc so they can protect themselves.
1.4D Fire Hazards
WARNING
Do not weld on containers or pipes that contain or have had flammable, gaseous or liquid
combustibles in them. Welding creates sparks and heat that can ignite flammable and explosive
materials.
-Do not operate any electric arc welder in areas where flammable or explosive materials are
present.
-Remove all flammable materials within 35 feet of the welding arc. If removal is not possible, tightly cover them
with fireproof covers.
-Take precautions to ensure that flying sparks do not cause fires or explosions in hidden areas, cracks or areas you
cannot see.
-Keep a fire extinguisher close in the case of fire.
-Wear garments that are oil-free with no pockets or cuffs that will collect sparks.
-Do not have on your person any items that are combustible, such as lighters or matches.
-Keep work lead connected as close to the weld area as possible to prevent any unknown, unintended paths of
electrical current from causing electrical shock and fire hazards.
-To prevent any unintended arcs, cut wire back to ¼" stick out after welding.
1.4E Hot Materials
WARNING
Welded materials are hot and can cause severe burns if handled improperly.
Do not touch welded materials with bare hands.
Do not touch MIG gun nozzle after welding until it has had time to cool down.
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1.4F Sparks/Flying Debris
WARNING
Welding creates hot sparks that can cause injury. Chipping slag off welds creates flying debris.
-Wear protective apparel at all times: ANSI-approved safety glasses or shield, welder’s hat and
ear plugs to keep sparks out of ears and hair.
1.4G Electromagnetic Fields
WARNING
Electromagnetic fields can interfere with various electrical and electronic devices such as
pacemakers.
-Consult your doctor before using any electric arc welder or cutting device
-Keep people with pacemakers away from your welding area when welding.
-Do not wrap cable around your body while welding.
-Wrap MIG gun and ground cable together whenever possible.
-Keep MIG gun and ground cables on the same side of your body.
1.4H Shielding Gas Cylinders Can Explode
High pressure cylinders can explode if damaged, so treat them carefully.
-Never expose cylinders to high heat, sparks, open flames, mechanical shocks or arcs.
-Do not touch cylinder with MIG gun.
-Do not weld on the cylinder.
-Always secure cylinder upright to a cart or stationary object.
-Keep cylinders away from welding or electrical circuits.
-Use the proper regulators, gas hose and fittings for the specific application.
-Do not look into the valve when opening it.
-Use protective cylinder cap whenever possible.
1.4I Proper Care, Maintenance And Repair
-Always have power disconnected when working on internal components.
- Do not touch or handle PC board without being properly grounded with a wrist strap. Put PC
board in staticproof bag to move or ship.
Do not put hands or fingers near moving parts such as drive rolls or fan.
1.4J Proposition 65 Warnings
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Welding and cutting equipment produces fumes or gases which contain chemicals known to the state of
California to cause birth defects and, in some cases, cancer. (California Health & Safety code section 25249.5 et
seq.)
2. Product Description
The MIG 175 welder is ready to weld with or without shielding gas. Flux cored arc welding (FCAW) uses a
welding wire with flux contained on the inside of the wire. MIG or Gas Metal Arc Welding (GMAW) uses an
external supply (cylinder) of shielding gas to shield the arc puddle from the atmosphere. Gases include CO2 and
C-25 (75% Argon/25%CO2) for mild steel, a triple mix of Argon, CO2 and Helium for stainless steel and Argon,
used for aluminum. In the welding process, an arc is created between the welding wire and work piece, melting
the two materials and joining them together. The welding wire is continuously fed through the gun to the work
piece, allowing the operator to concentrate on stick out (distance between the end of the wire and the work piece)
and travel speed. The MIG 175 is designed to weld mild steel materials from 26 gauge to 3/16" and performs
best using .023", .030" or .035" solid wire with C25 shielding gas or .030" and .035" flux cored or self shielding
wire. It can weld stainless steel materials from 18 gauge to 11 gauge (1/8") and aluminum materials from 16
gauge to 11 gauge (1/8").
Features of the MIG 175 wire feed welder:
Compact design includes the welder and wire feeder that fit in a small case for easy transport.
Popular 230 Volt power input for maximum convenience.
Ready to weld with or without shielding gas. Includes sample spool of flux cored wire to allow operator to
weld out of the box.
Low heat affected area when used with C25 and .023" wires for reduced distortion.
Welds thinner materials (26 gauge) with .023" wire and C25 shielding gas.
Welds up to 3/16" materials with .035" flux cored wires.
Tweco style replacement nozzle, contact tips and adaptor for easy access to replacement parts.
We reserve the right to change specifications without notification.
3. Technical Specifications
3.1 Proper Environment for Welder
* The ambient temperature range: when welding: -14°F–104°F,
during transport or in storage: -13F–131°F
* Relative humidity: when at 104°F: ≤50%,
when at 68°F: ≤90%.
* The dust, acid and erodible materials in the air can not exceed the amount required by the norm (apart from the
emissions from the welding process). No violent vibrations at the job site.
* Do not use in the rain or other wet conditions.
3.2 Required Power Supply
* Input voltage should not exceed more than ±10% of the rated voltage.
3.3 Standards for Welder
MIG 175 is listed according to the following standard:
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IEC 60974-1: 2000
Arc welder safety requirement. Chapter 1: Welding Power source
3.4 MIG Gun Illustration
The MIG gun is composed of three components: Gun handle, cable and connector.
Connector is the end that connects into the drive system and interfaces with the wire feeder and gas connection.
Cable is covered with a nylon tube with a liner in the center of the hollow cable. The center section of the liner
is where the welding wire is fed through. The space between liner and center of the cable is the passage for
shielding gas. The wire in the cable carries the electrical current from the drive housing connector point to the
contact tip.
The welding gun handle has a curved gooseneck between the handle and the adaptor/nozzle/contact tip. Use
nozzle gel to prevent buildup of slag on the inside of the nozzle. Do not hit gun nozzle on a solid object to remove
slag buildup. Remove nozzle and scrape out or use a MIG gun pliers with specially designed tip to scrape out slag.
The gas flows from the cylinder through the gas valve to the connecting point where the gun is connected with the
cable to the contact tip. The gas is released through the gas valve when the gun trigger is engaged. The gas
disperses through the adaptor into the nozzle to cover the molten weld puddle. In windy conditions, user must
either block the wind or use flux core wire.
Keep the MIG gun extended as straight as possible. Sharp turns in the gun cable will restrict wire feeding and
affect the welding performance.
Warning: * Power must be off when assembling or disassembling the gun to the drive housing or when
replacing the nozzle, adaptor or contact tip.
* Contact tips wear because of the wire passing through them and arcing, caused by electrical contact of
the wire to the contact tip.
* The liner should be replaced if dirty and causing friction to the wire feeding. If cable has been crushed
or cut, it must be replaced.
3.5 Symbol Explanations
Ground
Single phase
DC
X: Duty Cycle
I1: Rated Input Current
I2: Rated Welding Current
P1: Rated Input Power
U0: Rated No-Load Voltage
U1: Rated Input Voltage
U2: Rated Welding Voltage
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60Hz: AC, Rated Frequency 60Hz
V: Voltage (V)
A: Current (A)
KVA: Power (KVA)
%: Continuous Loading Rate
IP21S: Case Protection Class. ‘IP’ is the code of International Protection. ‘2’ means preventing user’s finger
from touching dangerous parts; preventing solid material with a diameter no less than 12.5mm into the
box. ‘1’ means preventing water falling vertically, which is harmless. ‘S’ means waterproof test is
conducted while the movable parts are stationary.
4. Welder Specifications
4.1 Main Technical Data (See Table 1)
Item
Input Power
MIG 175
V
230 (220~240)
Frequency
Hz
60
Phase No.
1
Rated No-Load Voltage
Rated Input Current
Rated Input Capacity
Rated Duty Cycle
V
A
35
20
KVA
%
2.3
20
Rated Output Current/ Voltage
Output Current Adjustment Range
Cooling Type
A/V
A
130/20.5
22~175
Fan-Cooled
17.3" x 10.2" x 14.4"
20.5" x 12.2" x 16.1"
49
External Dimension: L x W x H
Carton Dimension: L x W x H
Inch
Inch
Lb.
Weight
4.2 Structure of Welder
The MIG 175 portable wire feed welder case contains all the components of the welder.
The right side has the wire feed assembly, spool hub, gun trigger connections and polarity connections.
The left side houses the electrical components: transformer, reactor, current capacitor, cooling fan, controlling
transformer, PCB, heat radiator and the rectifier bridge.
The front panel contains the voltage and wire feed speed (amperage) control knobs, on/off switch, opening for the
gun connection, cooling openings, ground cable and gun trigger connections.
The back panel consists of the power cord, cooling opening and gas valve connection interface. (See the Chart
below)
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Top View
Front View
Left View
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4.3 Illustration Of Complete Assembly
5. Setup/Assembly
ATTENTION: The protection class of the MIG 175 Portable Wire Feed Welder is IP21S. Do not insert any
object that is less than 12.5 mm (especially a metal bar) into the welder. The case is not designed to be stood on
or to have heavy objects placed on top of it.
WARNING! Do not switch voltage while welding. Only the operator should adjust the welding parameters.
WARNING! The welder must be grounded before using. Do not remove the ground earth clamp while welding or
you may get an electric shock. When multiple welders are using a common grounding device, they must have a
parallel connection and must not connect in series. The welder’s ground cable sectional area should not be smaller
than the input power cable.
Weld only in areas free from dust, chemicals, flammable or explosive gases and other similar substances.
This welder is designed for use and storage indoors or in a covered area at 10°F–105°F. If used outside, unit
should not be exposed to rain or high humidity.
Only weld in a well-ventilated area where smoke and fumes can be avoided. Use a smoke ventilation device
if necessary.
5.1 Electrical Power
* Plug in power cord to a 230 Volt 15 amp circuit..
5.2 Shielding Gas Connection.
* Read Gas Bottle Safety Section on proper care and handling of compressed gases.
* Install regulator to gas bottle and connect the gas line between the regulator and the gas solenoid valve found in
the back of the welder.
* Secure gas hose with clamps to ensure there are no leaks.
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5.3 Installation and Connection for Wire Feeder System (See Chart)
* Select the proper wire for your welding application (see parameter chart). The wire diameter must match the
drive roll groove, gun liner and contact tip.
* Open drive system compartment and load spool of wire on wire spindle with wire coming off the bottom of the
spool going towards the drive system. The adaptor is used for 8" spools. Remove adaptor and put 4" spools
directly onto the spindle. Check the spool to see if it turns easily. Spool should freewheel without any binding
on the shaft. If too tight, apply a small amount of light oil to the spindle to reduce friction.
* Put the wing nut back on the spindle and tighten so there is a slight drag on the spool. If the screw is too tight, it
will affect the feeding of the wire. It needs to be just tight enough to stop the spool from turning when the gun
trigger is released.
* Release the top drive roll and flip it up to expose the drive roll. Insert the wire into the wire guide tube on the
drive system, feed the wire across the top of the drive roll into the liner on the gun side of the drive roll. Align
the wire with proper drive roll groove. Tighten the set screw on the drive roll when it is properly aligned.
5.4 Connection Between Drive System and Torch
* Loosen the set screw on top of the connection block, insert the end of the torch into the torch access hole and
push into the connection block until it is all the way in. Tighten the set screw on the connection block.
5.5 Connection of the Gun Trigger Leads and Ground Cable
* Feed the trigger leads through the hole for the ground cable and plug the trigger leads into the trigger receptacle.
Polarity does not make a difference.
* Connect the ground clamp cable with the lug on it through the wire access hole on the panel.
* Polarity: For solid wires the electrode (gun) must be connected to the “+” polarity stud and the ground lead on
the negative connection. For flux cored wires reverse the polarity and put the electrode (gun) on the negative
stud and the ground cable on the “+” positive stud.
6. Operation
Notice: * Turn off power and close regulator valve when you finish welding or temporarily leave the jobsite.
* Always wear:
1) A full helmet to protect your eyes from UV and IR light. The helmet also protects your face and neck
from sparks and flying debris.
2) Long sleeve shirt
3) Full length pants
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4) Gloves
5) Socks and shoes
Protective clothing is available in flame-retardant materials.
* Use welding screens to protect others from exposure to IR and UV rays
6.1 Work Piece Cleaning before Welding
Clean the weld groove and surrounding area of rust, grease, dirt and paint before welding. It is essential to have a
clean weld area for the MIG process.
6.2 Adjustment and Test before Welding
* The cooling fan indicates that the switch is on.
* The cylinder valve must be open before the gauges will indicate information.
* To adjust gas flow, open the valve of gas regulator (rotate clockwise), disengage drive roll idle arm, press torch
trigger and adjust gas flow to meet the welding requirements.
* Make sure wire is in the correct drive roll groove, tighten idle arm on drive system, adjust wire feed speed to
#10, remove contact tip, straighten torch, press torch trigger and feed the wire to torch head. WARNING: do not
look into the end of the torch as wire coming out the end of the gun could damage your eyes or other facial
features.
* The wire feed speed should be consistent. If it is not, check the drive roll tension. Proper adjustment will result
in even flow of wire.
* When flux-core welding, over-tightening the drive roll arm can cause damage to the wire and affect smooth wire
feeding.
6.3 Welding
* Check parameter chart for initial setting of the voltage and wire feed. Adjustment may be necessary for your
application and style of welding.
* Warning: Do not adjust the voltage setting while welding. MIG gun trigger must be released.
6.4 Maintenance and Service
* Proper maintenance and service are required to assure proper performance and prolong the life of your welder.
Normal wear items include: MIG gun components (i.e., contact tips, nozzle, adaptor, liner, drive rolls, gas hose,
and contactor).
* If used in a dusty environment, the internal components will need to be cleaned with high-pressure air.
Cleaning is recommended annually unless used in high dust environments.
* Only qualified personnel are allowed to repair components that require the removal of the case. When in
question, call the technical help number listed on the cover of this manual.
* This welder is designed for use and storage indoors or in a covered area at 10°F–105°F. If used outside it
should not be exposed to rain or high humidity.
. * The ambient temperature range: when welding: -14°F–104°F
during transport or in storage: -13°F–131°F
* Relative humidity: when at 104°F: ≤50%,
when at 68°F: ≤90%.
* Not for use in high vibration conditions.
* Do not use in the rain or other wet environments.
* Make sure all cable connections are tight to assure proper connections.
* Check shielding gas system for leaks around connections.
* If there is abnormal noise from moving parts turn off, unplug and take to a qualified repair center.
* Keep MIG gun cable as straight as possible when welding to reduce friction when wire is feeding through the
gun.
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* Regularly remove the spatter from the inside of the nozzle to prevent a short circuit. Use nozzle gel to
minimize spatter buildup in the nozzle.
* Use appropriate wire listed on the parameter chart. Do not use rusty or dirty wire.
* Clean the dust and metal filings from the liner with compressed air. The dust is accumulated by friction
between wire and liner, drive rolls and magnetic attraction of the wire to metal debris. If wire feeding is
uneven this may be the problem.
* Do not over tighten the drive roll idler are, it will increase resistance, friction and possible deform the wire.
7. Troubleshooting
7.1 Troubleshooting (See Table)
No.
Problem
Possible Causes
Input fuse/breaker blown or tripped
Power not connected
Solutions
Change fuse, reset breaker
Check and turn on power
No wire feeding
function when
MIG gun trigger is
depressed.
1
Change trigger leads and MIG gun
switch
MIG gun trigger leads or switch not working
Potentiometer not set high enough
Wire stuck in contact tip
Change potentiometer
Change contact tip
Wire feeding
motor doesn’t
work
2
Tighten drive idle arm and check
to see if the wire is in the proper
drive roll gear.
Drive idle arm too loose or wire is not
in groove.
Too large or worn contact tip results in unstable
arc.
Change contact tip to match the wire
diameter
Long light-duty gauge extension cord
Use 12 gauge or heavier extension
cord
Arc is unstable and
produces excess
spatter
3
Too low input voltage
Check input power for sufficient
voltage
Wire feed resistance is too high
Clean or replace the liner and use the
MIG gun extended straight
Ground clamp not connected or damaged
Connect or replace ground lead
No Arc
4
Dirty work piece where ground clamp is
attached, preventing a proper ground
Remove rust, paint or other contaminants
that prevent a good ground connection
MIG gun O-ring or hose broken
Replace O-ring or gas hose in gun
Check gas system
External gas hose pinched or not connected
No shielded gas
Others
5
6
Solenoid or internal gas line not functioning or
disconnected
Replace or secure gas hose connections,
replace solenoid.
Call customer service
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7.2 Common Weld Defects (See Table)
No.
Seam defect
Possible Causes
Wire and workpiece have excessive oil, rust or water.
Gas holes
1
Insufficient shielding gas coverage (low flow); silicon and manganese content are
insufficient; nozzle is blocked up.
Wire and work piece have excessive oil, rust and water.
Current and voltage are not matched well.
Crackle
2
Melting depth is excessive; the carbon content of master material’s welding seam is too high.
The first welding seam is too small when multi-layer welding; the welding sequence is wrong
and the water content of gas is excessive.
Arc length is too short and welding speed is too fast.
Bite side
3
4
Welding position is not correct; welding current is too low and the impression of pad is too
deep.
Welding current and voltage are not matched well.
Wire and work piece are not clean.
Excessive spatter
Contact tip diameter is too little or large, stick out is too long.
Welding current is too low; wire stick out is too long.
Poor fit up; angle and gap are too small
Melting depth is
too shallow
5
6
Others
Contact customer service
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8. Circuit Chart
MIG 175 Series Portable Wire Feed Welder Circuit Chart (see below)
The circuit chart of MIG 175 Series. (Only for reference, no notification will be given if there are any changes.)
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9. Packing List
Complete Set Specifications for MIG Series (See Table)
*
*
*
*
*
*
*
*
*
*
MIG 175 Portable Wire Feed Welder
1 unit
Product Certificate
Warranty Card
1
1
1
1
Operator’s Manual
Regulator
Flux Core and solid wire samples
MIG Gun
1
1
1
1
Shielding gas hose
Ground Cable and Clamp
Extra Contact Tips
10. Transport & Storage
* The welder should not be exposed to rain and snow during transportation and storage. Store in a clean dry
facility free from corrosive gas, excess dust and high humidity. Temperature range from 10°F–120°F and the
relative humidity not be more than 90%.
* When transporting or storing the welder after use, it is recommended to repack the product as it was received for
protection. (Cleaning is required before storage and you must seal the plastic bag in the box for storage.)
11. Quality Guarantee
Users are advised to operate in compliance with the guidelines in this manual. Proper care and use will ensure
many years of welding performance. See warranty on back cover.
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12. Illustrated Parts List
1
2
Wire Feed Door
Wire Feeder
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Diode
Diode Assembly Board (2)
Temperature Relay
Diode
3
MIG Gun Receptacle
Front Panel
4
5
On-off Switch
Breaker
6
Wire Feed Potentiometer
Wire Feed Potentiometer Knob
Voltage Switch Knob
Insulating Flange
MIG Gun
Waterproof Cable Connector
Gas Valve Connector
Gas solenoid Valve DF2-3
Back Panel
7
8
9
10
11
12
13
14
15
16
17
18
19
Axle-shaped Fan
Diode Assembly Board
Reactor Assembly
Transformer Assembly
Spring on Wire Coil
Plate on Wire Coil
Wire Coil Locked Cover
Support for Wire Coil
Wire Coil Big Cover
Wing Nut
Ground Cable
Voltage Switch
Electric Capacitor
Center Baffle
Small Control Transformer
Flat-Bottomed Isolated Inset
Circuit Control Board
Cover
Handle
17
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Warranty
Northern Tool + Equipment
Effective Jan 1, 2007
Limited Warranty
This warranty applies to the original purchaser and is subject to the terms and conditions listed below.
This Limited Warranty is for new equipment sold after the above date, providing coverage for defects
in material and workmanship at the time it is shipped from the factory.
Limited to the warranty periods listed below, Northern Tool + Equipment will repair or replace the item
under warranty that fails due to defects in material and workmanship. Northern Tool + Equipment
must be notified within 30 days of the failure, so as to provide instructions on how to proceed with the
repair of your welder and warranty claim processing. Warranty period begins at the time the welder is
purchased from Northern Tool + Equipment.
Warranty Periods
Limited Warranty is divided into four categories: No warranty, 6 months, 1 year, 3 year.
No Warranty
Normal wear items, MIG gun parts (contact tips, nozzle, adapter, MIG gun liner), drive roll, contactor,
plasma torch parts (electrode, shield), TIG torch parts (tungsten, collet, back caps), electrode holder,
are not covered under warranty.
6 Months
Parts and labor performed by authorized repair center with original equipment repair parts
1Year
Contactor, MIG gun parts (except those listed under normal wear items), Plasma torch (except those
listed under normal wear items), TIG torch (except those listed under normal wear items), cables,
remote amperage controls, regulator.
3Year
Includes: transformer, reactor, rectifier, solenoid valve, PC board, switches, controls, gas valve, drive
motor, drive system.
MIG175WelderManualCover.indd
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Northern Tool + Equipment Co.
2800 Southcross Drive West
PO Box 1219
Burnsville MN 55337
MIG175WelderManualCover.indd
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