Operation
3A1938E
EP Hose Pumps
EN
Electric-powered hose pump for use in fluid transfer and metering applications. For professional use
only.
Not approved for use in explosive atmospheres or hazardous locations.
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
125 psi (0.9 MPa, 9 bar) Maximum Fluid
Working Pressure
See page 3 for model part numbers and
information.
PROVEN QUALITY. LEADING TECHNOLOGY.
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Models
Pump Model
Hose ID Size
(mm)
Reference
EP2006
6
See EP2 Repair-Parts Manual for a complete list of pump
part numbers and descriptive information.
EP2013
13
19
29
See EP2 Repair-Parts Manual for a complete list of pump
part numbers and descriptive information.
EP3019
See EP3 Repair-Parts Manual for a complete list of pump
part numbers and descriptive information.
EP4029
See EP4 Repair-Parts Manual for a complete list of pump
part numbers and descriptive information.
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Warnings
The following warnings are for the setup, use, grounding, maintenance and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbol refers to procedure-specific
risks. When these symbols appear in the body of this manual or on warning labels, refer back to these
Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout
the body of this manual where applicable.
WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help
prevent fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and
plastic drop cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable
fumes are present.
• Ground all equipment in the work area. See Grounding instructions.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use
equipment until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
ELECTRIC SHOCK HAZARD
This equipment must be grounded. Improper grounding, setup, or usage of the system can
cause electric shock.
• Turn off and disconnect power at main switch before disconnecting any cables and before
servicing or installing equipment.
• Connect only to grounded power source.
• All electrical wiring must be done by a qualified electrician and comply with all local codes
and regulations.
MOVING PARTS HAZARD
Moving parts can pinch, cut or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing
equipment, follow the Pressure Relief Procedure and disconnect all power sources.
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WARNING
ENTANGLEMENT HAZARD
Rotating parts can cause serious injury.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Do not wear loose clothing, jewelry or long hair while operating equipment.
• Equipment can start without warning. Before checking, moving or servicing equipment, follow
the Pressure Relief Procedure and disconnect all power sources.
TOXIC FLUID OR FUMES
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin,
inhaled, or swallowed.
• Read MSDSs to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable
guidelines.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the
operating area of the equipment to help protect you from serious injury, including eye injury,
hearing loss, inhalation of toxic fumes, and burns. This equipment includes but is not limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent
manufacturer.
PRESSURIZED EQUIPMENT HAZARD
Fluid from the equipment, leaks, or ruptured components can splash in the eyes or on skin
and cause serious injury.
• Follow the Pressure Relief Procedure when you stop spraying/dispensing and before
cleaning, checking, or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
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WARNING
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated
system component. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data
in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete
information about your material, request MSDS from distributor or retailer.
• Do not leave the work area while equipment is energized or under pressure.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine
manufacturer’s replacement parts only.
• Do not alter or modify equipment.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
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Moving the Pump
Installation
The pump is heavy. Handle it carefully. Careless
handling can result in equipment damage and
injury to personnel.
Installation of your pump involves potentially
hazardous procedures. Only trained and qualified
personnel who have read and who understand
the information in this manual should install this
equipment.
After you receive and inspect your pump, transfer it
to the assembly location or storage area.
NOTE: To prevent hose damage if storing the pump
Receiving and Handling
Use the proper forklift truck for lifting equipment
on pallets or in crates. The lift forks should extend
under the equipment and completely support the
unit. When necessary to lift by crane, use the vertical
points of the equipment or the crating for pickup so
the equipment remains level. Use long lift cables,
chains, or straps, as required, to evenly support
the equipment. In addition, use a spreader bar, if
necessary, to ensure a vertical pull at all lift points.
Short cables or chains can create a cross shear that
can damage the equipment.
Upon receipt of your pump:
• Carefully inspect the pump to verify that no damage
occurred during transit. Check the packing list to
ensure that all parts and accessories are present.
NOTE: If you find any damage or shortage,
immediately notify your Graco distributor.
• Refer to the pump identification plate (ID) for the
pump part number and series level.
• Leave the pump assembly crated, horizontal, and
stored in a warm, dry location until you are ready
to install it. To store the pump more than 30 days,
NOTICE
If your pump is supplied with a gear motor, lift only
with straps located under the gear motor and under
the front of the pump.
Figure 1 Pump Identification Plate
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Location
-Graco Motor
Mounting a Non
Allow sufficient space to permit easy access for
maintenance and service, especially in front of
the pump. The pump area should have adequate
headroom and sufficient ventilation.
To mount a non-Graco motor and gearbox to a bare
EP Hose Pump, see the following table and Fig. 2
(EP2 Pumps) or Fig. 3 (EP3 or EP4 Pumps).
EP
Hollow
Bore
Bolt Cir- Flange
Mount-
Before installing your pump, see
Pump
Size
cle Di-
ameter
Pilot Di- ing Hole
available space is sufficient for the pump, taking into
account the following provisions:
Shaft
Diame- (B)
ter (A)
ameter
(C)
Thread
Size (D)
• Dimension and weight of the pump package.
• Required moving and hoisting equipment.
EP2
EP3
EP4
20 mm
30 mm
35 mm
100 mm 80 mm
M6
130 mm 110 mm M8
165 mm 130 mm M10
• Possible piping layout, including space for removal
and maintenance.
• Freedom of movement to operate the unit,
read speed and pressure gauges, and provide
adjustment and maintenance.
• Space required for lubrication.
• Space for removal of the hose from the unit.
• Location of the nearest drain or catch basin to
collect used lubricant and fluid.
NOTE: The hose is serviced through the front cover.
Therefore, provide sufficient work space in front of
the pump when installing the unit.
Mount the Pump
Figure 2 Motor Mounting Dimensions for EP2 Pumps
Mount the pump on a flat concrete foundation 4
inches (100 mm) wider and longer than the pump
base. When installing the pump, make sure that the
surface of the foundation is smooth and free of debris.
The foundation should be level and of sufficient depth
and strength to adequately support the pump.
Anchor bolts should be set into the concrete
foundation. For best results, use anchor bolts made
of corrosion resistant material such as stainless
steel. Anchor bolt nuts should be of a different grade
stainless steel to prevent galling. Level the pump as
required, using shims.
Initially tighten the anchor bolts one eighth of a turn
with a wrench. Do not fully tighten until after all piping
has been connected.
Figure 3 Motor Mounting Dimensions for EP3 or
EP4 Pumps
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Fluid Connections
Pump Model
Fluid Inlet and
Outlet Size
EP2006 and EP2013 Pumps
EP3019 Pumps
1/2 npt(m)
3/4 npt(m)
1–1/4 npt(m)
EP4029 Pumps
Undue stress on the pump inlet or outlet
connections can cause serious injury or equipment
failure. The fluid inlet and outlet lines must be
independently supported. The pipe supports
should be located as close to the pump as possible.
Install a shutoff valve near the pump inlet to isolate
the unit for service and repair. Never install a check
valve on the inlet side of the pump. A compound
vacuum/pressure gauge can be installed to monitor
pump performance.
NOTE: The hose connections require the use of a
hose clamp. Part No. 24L497 Clamping Tool is
available from Graco.
Fluid Outlet Line
The pump roller moves either clockwise or
counter-clockwise, depending on the direction of
motor rotation and the number of gears. The direction
of roller movement determines the orientation of the
fluid inlet and outlet. See the table below.
The pump outlet piping should be a similar diameter
as the outlet connection. Avoid sudden changes in
pipe diameter by using concentric taper increasers.
As much as possible, provide a straight run of pipe
downstream of the pump outlet.
Roller Direction
(as viewed through
sightglass)
Fluid Inlet
Fluid Outlet
NOTICE
Install a pressure relief valve upstream of a
shutoff valve at the pump outlet, to prevent
over-pressurization that can damage the pump or
the hose.
Clockwise
Left
Right
Left
Counter-clockwise
Right
NOTE: If your installation requires the fluid inlet
and outlet positions to be reversed, this can
be done by reversing the motor rotation. See
Install the pressure relief valve near the pump outlet.
Downstream of the pressure relief valve, install
a shutoff valve to isolate the unit for service and
repair. Install a pressure gauge to monitor pump
performance. A check valve is not recommended
on the outlet of the pump since the pump acts as its
own check valve.
Fluid Inlet Line
Locate the pump as close to the fluid source as
possible. The inlet piping should be at least the
same diameter as the pump inlet connection and
should have a straight run of pipe that is a minimum
of 8 to 10 pipe diameters long. Inlet piping must be
airtight and suitable for both pressure and vacuum.
If possible, provide a larger diameter pipe than the
pump inlet connection.
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Flush Connections
1. Disconnect the pump from the power source.
2. Remove the screws holding the motor fan cover.
Turn the fan by hand until the roller stops at the
bottom of the pump housing in the 6 o’clock
position.
Line flushing connections are recommended when
pumping slurries or liquids with a high concentration
of solids that tend to settle when the pump is turned
off.
NOTE: The roller must be in the 6 o’clock position
to prevent overfilling the pump with hose lube.
NOTE: Accumulation of solids in the hose after
shutdown can reduce hose life because the hose will
experience high stress when restarting the pump.
3. Unscrew the vent plug (15) near the top of the
cover.
Pulsation Dampeners
4. Using a funnel, add hose lube through the vent
port. For EP3 and EP4 Models, the oil will be
visible through the sightglass (16). The oil level
must not rise above the halfway point on the
roller.
Hose pumps sometimes require the use of pulsation
dampeners on either the inlet or outlet to increase
the hose life during operation. A pulsation dampener
acts to absorb the energy of the pulsations that the
pump produces so that these forces do not act upon
the hose. Your Graco distributor will assist you in
selecting the proper size and application of these
devices in your system.
NOTE: Do not overfill. Overfilling the pump
housing with hose lube will increase pressure
in the pump housing, causing hose lube to leak
from the cover or the clamp area. See the table
below for the correct amount of hose lube for
your pump. Pre-measuring the correct amount
will help prevent overfilling.
If your operation does require pulsation dampeners,
mount them as close to the inlet and/or outlet of the
pump as possible. Do not support the weight of the
dampeners on the pump connections. These devices
must be independently supported.
Pump Model
Amount of Hose Lube
(approximate)
Outlet pulsation dampeners work best when there
is some back pressure in the outlet line. Pulsation
dampeners do not work efficiently at low outlet
pressures or when the pump discharges directly to
the atmosphere.
EP2006, EP2013
EP3019
8 oz (250 ml)
0.25 gal. (1 liter)
0.5 gal. (2 liters)
EP4029
NOTE: Higher operating speeds provide more
vigorous lubrication, which may cause splashing
of oil. When operating at a speed of 85 RPM
or greater, reduce the amount of hose lube as
shown in the table below.
Drain and Vent Plugs
The pump is equipped with a low point drain (17)
and a vent (15). The drain is typically plugged with a
stainless steel plug, and the vent prevents a buildup
of excess pressure in the pump housing.
Oper-
ating
Speed
(RPM)
Amount of Hose Lube
Lubricate the Pump
0–84
As recommended in the table
above.
Before operating the pump, add hose lube to the
pump housing as explained below. Failure to do
so will result in reduced hose life. The hose lube
acts as a lubricant between the hose and the roller
and between the roller and the eccentric shaft.
It also dissipates heat from the hose. Check the
compatibility of the hose lube with your pumped fluid.
85–104
70% of recommended quantity
105–114 60% of recommended quantity
115 and
above
50% of recommended quantity
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Figure 4 Fill Pump With Hose Lube
Figure 6 Hose Lube Level on EP2 Pumps
5. Wrap the vent plug (15) threads with PTFE tape
and screw it into the vent port carefully.
NOTICE
The vent port threads are aluminum. To help
prevent galling, blow out the threads with
compressed air before installing the steel vent plug
(15).
Figure 5 Hose Lube Level on EP3 and EP4
Pumps
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2. Fluid hoses: Use only electrically conductive
hoses with a maximum of 500 ft. (150 m)
combined hose length to ensure grounding
continuity. Check the electrical resistance of
hoses. If total resistance to ground exceeds 25
megohms, replace hose immediately.
Grounding
This equipment must be grounded to reduce the
risk of static sparking and electric shock. Electric
or static sparking can cause fumes to ignite or
explode. Improper grounding can cause electric
shock. Grounding provides an escape wire for the
electric current.
3. Fluid supply container: Follow your local code.
4. All solvent pails used when flushing: Follow local
code. Use only metal pails, which are conductive.
Do not place the pail on a non-conductive
surface, such as paper or cardboard, which
interrupts the grounding continuity.
1. Pump: The pump is grounded through
a proper electrical connection. See
5. To maintain grounding continuity when flushing
or relieving pressure: Always hold the metal
nozzle firmly to the side of a grounded metal pail.
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Electrical Connections
V2
W2
U2
All electrical wiring must be completed by a
qualified electrician and comply with all local codes
and regulations.
U3
U1
W3
W1
V3
V1
L1
L2
L3
Wire Connections at the Motor
NOTE: Follow the instructions in the motor
manufacturer’s manual. Use a motor starter with
overload protection. Wire size, fuse size, and other
electrical devices must comply with all local codes
and regulations.
V2
T5
W2
T6
U2
T4
U1 U3
T1 T7
V1 V3 W1 W3
T2 T8 T3 T9
The motor must be wired to the VFD. Install the
wiring at the motor as follows:
L1
L2
L3
1. Open the motor’s electrical box.
Figure 7 Wire Connections for a 230 V Motor
2. Install a strain relief in one of the ports at the
bottom of the motor box.
3. Connect the green ground wire to the ground
screw.
V2
V3
W2
W3
U2
U3
4. See Fig. 7 for 230 V motors and Fig. 8 for 460
V motors. Connect the wires to the bottom three
terminals (U, V, and W) in the motor box.
5. Close the motor electrical box.
W1
U1
V1
L1
L2
L3
V2 V3
T5 T8
W2 W3 U2 U3
T6 T9 T4 T7
U1
T1
V1
T2
W1
T3
L1
L2
L3
Figure 8 Wire Connections for a 460 V Motor
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Wire Connections at the Variable Frequency
Drive (VFD)
Main Power Connections at the VFD
NOTE: Follow the instructions in the VFD
manufacturer’s manual.
Install the wiring at the VFD as follows:
All electrical wiring must be completed by a
qualified electrician and comply with all local codes
and regulations.
1. Connect the wires to the motor. See
2. Open the VFD’s electrical box.
3. Install strain reliefs in both ports at the bottom of
the VFD box.
Connect the power supply wires to the VFD, as
follows:
4. Connect the green ground wire to the ground
screw.
1. Connect the wiring between the motor and VFD,
as detailed above.
5. Connect the wires from the motor terminals to
the matching terminals in the VFD box, as shown
in Fig. 9.
2. Connect the green ground wire of the power
supply to the ground screw. The ground wire
from the motor is also connected to this screw.
3. Connect the power supply wires to the power
terminals in the VFD box, following all local codes
and regulations. See Table 1 and Figs. 10–14,
as applicable for your system.
U/T1 V/T2 W/T3 PE
PES
PES
PE
4. Close the VFD electrical box.
PES
PES
PES
PE
Figure 9 Wire Connections from the Motor to the VFD
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Table 1 Main Power Connections at the VFD
VFD Part No.
16K905
Used With Pump
EP2006
Input Voltage
Output Voltage
See Figure No.
120 Vac, 1 phase
240 Vac, 1 phase
240 Vac, 3 phase
240 Vac, 3 phase
Fig. 10
Fig. 11
Fig. 12
16K905
EP2006
16K906
EP2006
208–240 Vac, 1
phase
208–240 Vac, 3
phase
16K906
EP2006
208–240 Vac, 3
phase
208–240 Vac, 3
phase
Fig. 13
16K907
16K907
16K908
EP2013
EP2013
EP2013
120 Vac, 1 phase
240 Vac, 1 phase
240 Vac, 3 phase
240 Vac, 3 phase
Fig. 10
Fig. 11
Fig. 12
208–240 Vac, 1
phase
208–240 Vac, 3
phase
16K908
EP2013
208–240 Vac, 3
phase
208–240 Vac, 3
phase
Fig. 13
16K909
16K909
16K910
EP3019
EP3019
EP3019
120 Vac, 1 phase
240 Vac, 1 phase
240 Vac, 3 phase
240 Vac, 3 phase
Fig. 10
Fig. 11
Fig. 12
208–240 Vac, 1
phase
208–240 Vac, 3
phase
16K910
16K911
16K911
16K912
EP3019
EP4029
EP4029
EP4029
208–240 Vac, 3
phase
208–240 Vac, 3
phase
Fig. 13
Fig. 12
Fig. 13
Fig. 14
208–240 Vac, 1
phase
208–240 Vac, 3
phase
208–240 Vac, 3
phase
208–240 Vac, 3
phase
400–480 Vac 3
phase
400–480 Vac 3
phase
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PE L1 L2 N
PE L1 L2 L3
PE
L1
N
PE
L1
L2
L3
Figure 10 120 Vac 1 Phase Input/240 Vac 3 Phase
Output
Figure 13 208–240 Vac 3 Phase Input/208–240 Vac
3 Phase Output
PE L1 L2 N
PE L1 L2 L3
PE
L1
L2
PE
L1
L2
L3
Figure 11 240 Vac 1 Phase Input/240 Vac 3 Phase
Output
Figure 14 400–480 Vac 3 Phase Input/400–480 Vac
3 Phase Output
PE L1 L2 L3
PE
L1
N
Figure 12 208–240 Vac 1 Phase Input/208–240 Vac
3 Phase Output
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Reverse Motor Direction
Setup the VFD
NOTE: VFD Parameter P112 controls the direction of
motor rotation. The VFD is shipped with the rotation
set to forward as a default.
VFD Control Panel
NOTE: For complete information about the VFD, see
the manufacturer’s instructions supplied with the
VFD.
1. Verify which way the roller is moving. See
• The control panel display shows the status of the
motor. It also shows the direction of motor rotation:
FWD (forward) or REV (reverse).
2. Press the M key to access the VFD menu.
3. Enter the default password 225, using the up or
down arrow keys.
• The green RUN key starts the motor.
• The red STOP key stops the motor.
NOTE: If you have already entered the password,
the screen will display the previously viewed
parameter.
• Use the arrow keys to speed up or slow down the
motor.
4. Press the M key again. P100 will display on the
screen.
• The blue R/F key changes the motor rotation (see
5. Scroll to P112, using the arrow keys.
6. Press the M key again.
• The blue M key accesses the VFD menu. See the
manufacturer’s instructions for menu descriptions
and information.
7. 00 will display on the screen. Use the arrow keys
to set the display to 01. This allows both forward
and reverse rotation.
NOTE: If the M key is pressed, use the arrow keys
to scroll through the VFD menu.
8. Press the M key to enter the setting. The screen
will display STOP or the last frequency setting.
NOTE: To use this feature when operating the pump,
press the R/F key, then the M key. The drive will
slow and the motor will reverse direction. Press the
RUN key and check that the roller is moving in the
opposite direction.
Adjust the Speed
Use the arrow keys on the VFD control panel to
increase or decrease the motor speed.
Figure 15 VFD Control Panel
Factory Settings
VFD settings are preset at the factory for most
applications. Two settings may need to be changed
when setting up your EP Hose Pump system:
• If the pump is running in the wrong direction for your
• To change the speed of the pump, see
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Pre-Start Checklist
Operation
Verify each of the following items before starting the
pump.
Flush Pump Before Using
• DEBRIS: Ensure that the fluid inlet line and
fluid supply are free or dirt, debris, and any
contaminants.
Pumps are tested with lightweight oil which is left in
to protect the pump parts. To prevent contamination
of the fluid, flush the pump with a compatible solvent
• HOSE MATERIAL: Check that the hose material
is compatible with the fluid being pumped. Consult
your Graco distributor for available hose materials.
Pressure Relief Procedure
• FASTENERS: Check that all fasteners are properly
tightened.
• LEAKS: Check the connections on the fluid inlet
and outlet and make sure there are no leaks.
Check the front cover for signs of leaks from the
front cover gasket. Do not over-tighten the front
cover.
1. Shut off the electricity to the pump. Lock out
power at the electrical box.
• COVERS: Verify that the front cover and motor fan
cover are in place before starting the pump.
2. Shut off the fluid inlet valve to the pump.
3. Let the fluid in the system drain from the fluid
outlet line.
Start the Pump
1. Verify that all items in the
Pre-Start Checklist, page 18, are completed.
2. Fully open all valves on the fluid inlet and outlet
lines. This is a positive displacement pump and
will continue to build pressure, even against a
closed valve.
3. Disengage the motor lockout at the power supply.
4. Start the motor.
5. Run the pump slowly, gradually increasing
pressure until the desired outlet pressure is
achieved and the pump and hoses are fully
primed.
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Running the Pump
Operating in Low Temperatures
NOTICE
Never operate the pump if the fluid inside the hose
is frozen. This will cause serious damage to the
pump.
Ensure that the hose material and the lubricant are
compatible with the pumped fluid. Failure to do so
may cause injury or premature hose failure.
If operating the pump at low temperatures, ensure
that the fluid being pumped does not freeze inside
the hose, especially during long periods of idleness.
Do not start the pump if the fluid inside the hose is
frozen. Ensure that the inlet line, the outlet line, and
the pump housing are heat-taped and insulated so
freezing does not occur.
NOTICE
Never throttle the pump, whether on the fluid inlet
or outlet side. This will cause damage. Do not
operate the pump against a closed inlet or outlet
valve.
Shutdown
• Run the pump as slowly as possible to achieve the
desired results. Measure the fluid inlet and outlet
pressure to verify that the pump is operating at the
designed pressure point.
Use the following procedure to stop the pump.
1. Flush the fluid lines and pump to remove solids
that may accumulate in the line or hose. See
• Do not operate the pump motor above the full load
amperage stamped on the motor nameplate. The
pump can be operated at low motor amperage.
2. Shut off the motor.
• Keep the pump fluid inlet and outlet open and free
of obstructions.
3. Isolate any flushing fluid connections.
4. Close the fluid inlet valve.
5. If the pump will be out of service for more than
Dry Running
The pump can run dry without damaging the pump.
However, pumped fluid normally provides a cooling
effect to both the hose and the hose lube. Continuous
dry running may reduce hose life.
Storage
Follow this procedure to store the pump for more
than 30 days.
1. Remove the front cover drain plug to drain all
lubricant from the pump. Once the pump is
drained of lubricant, add a desiccant pack to
prevent moisture accumulation. Leave the drain
plug out until restoring the pump to service, to
prevent water from accumulating in the pump.
2. Remove the hose from the pump. See the Pump
Repair-Parts Manual.
3. Grease the bearings as needed.
4. Inspect the pump and re-crate it. Store the pump
in a clean, dry area that is free from extremes in
temperature.
3A1938E
19
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Flushing
Maintenance
• Flush before changing fluids, before fluid can dry
in the equipment, at the end of the day, before
storing, and before repairing equipment.
• Flush at the lowest pressure possible. Check
connectors for leaks and tighten as necessary.
Maintenance and repair of the pump involves
potentially hazardous procedures. Only trained
and qualified personnel who have read and who
understand the instructions in this manual should
maintain or repair this equipment.
• Flush with a fluid that is compatible with the fluid
being dispensed and the equipment wetted parts.
Pump Bearing Lubrication
Grease-lubricated pump bearings require an NLGI
Number 2 grease such as Shell Dolium R or
equivalent. Grease the bearings every 24 months,
depending on duty cycle and ambient conditions.
Preventive Maintenance Schedule
Check the following items at the intervals listed below,
following all of the safety warnings in this manual.
1. Remove the plug (18) from the pump housing
and replace it with a zerk fitting.
Every Three Months
2. Use a low pressure grease gun to pump grease
into the zerk fitting. Add grease until it passes
through the outer bearing of the shaft.
Check gauges on pump inlet and outlet and pump
operating speed to confirm operating point.
3. Remove the zerk fitting and reinstall the plug (18).
Every Six Months
Inspect the pump and re-grease the bearings if you
suspect that the original grease was contaminated
by a grease seal failure.
• Check bearing temperature and compare with
earlier readings.
• Run an amperage reading to verify that the motor
is running normally.
Hose Lubrication
• Inspect the fan guard and remove any accumulated
debris from under it and around the motor.
The pump requires lubrication of the hose. The
lubrication provides longer hose life by increasing
cooling and reducing friction between the roller and
the hose. The use of non-standard lubricant can
impact your hose life; always use genuine Graco
hose lube.
• Tighten any fasteners that may be loose.
• Lubricate the motor. See the motor manufacturer’s
instructions.
• Lubricate the pump. See
Fill your pump to the level indicated in
20
3A1938E
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Dimensions
EP2 Hose Pumps
Model
EP2
A, mm (in.)
228 (8.98)
B, mm (in.)
280 (11.02)
C, mm (in.)
437 (17.20)
D, mm (in.)
339 (13.35)
EP3 and EP4 Hose Pumps
Pump Model
A, mm (in.)
B, mm (in.)
C, mm (in.)
D, mm (in.)
EP3
EP4
300 (11.81)
404 (15.91)
344 (13.52)
428 (16.86)
423 (16.65)
492 (19.35)
696 (27.39)
868 (34.15)
3A1938E
21
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Mounting Hole Layouts
EP2 Hose Pumps
D
C
A
B
Pump Model
EP2
A
B
C
D
120 mm (4.7 in.)
170 mm (6.7 in.)
21 mm (0.83 in.)
Four 12 mm (0.47
in.) diameter
mounting holes
EP3 and EP4 Hose Pumps
C
A
D
B
Pump Model
EP3
A
B
C
D
229 mm (9 in.)
229 mm (9 in.)
28 mm (1.1 in.)
Four 9.5 mm (0.37
in.) diameter
mounting holes
EP4
310 mm (12.2 in.)
310 mm (12.2 in.)
42 mm (1.65 in.)
Four 9.5 mm (0.37
in.) diameter
mounting holes
22
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Technical Data
EP2 Pumps
U.S.
Metric
0.9 MPa, 9 bar
See the EP2 Pump Repair-Parts manual for the motor/gear
ratio used on your pump:
Maximum Fluid Working Pressure
Motor Horsepower/Gear Ratio
125 psi
0.5/51.30
0.75/35.10
0.33/157.43
Maximum Pump Speed
6 mm: 35 RPM; 13 mm: 50 RPM
Maximum Environmental
Temperature
122°F
50°C
Minimum Environmental
Temperature
14°F
–10°C
Maximum Flow
EP2006 Pump
EP2013 Pump
Fluid Capacity per Revolution
EP2006 Pump
EP2013 Pump
Hose Inner Diameter
EP2006 Pump
EP2013 Pump
Noise
0.14 gpm
0.80 gpm
0.5 lpm
3.0 lpm
0.004 gal.
0.016 gal.
0.015 liters
0.06 liters
6 mm
13 mm
Sound Pressure
Dimensions
Less than 80 dB(A)
Height
Width with hose installed
17.20 in.
11.02 in.
437 mm
280 mm
Width without hose installed
Length
Weight
8.98 in.
13.35 in.
51.7 lb
228 mm
339 mm
23.5 kg
Fluid Inlet and Outlet Size
Wetted Parts
Pump
1/2 npt(m)
Powder coated aluminum.
Hose
See the Parts Matrix in the EP2 Pump Repair-Parts manual.
Barbed Fitting
Stainless steel or Hastelloy. See the Parts Matrix in the EP2 Pump
Repair-Parts manual.
3A1938E
23
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EP3 Pumps
U.S.
Metric
Maximum Fluid Working Pressure
Motor Horsepower/Gear Ratio
125 psi
0.9 MPa, 9 bar
See the EP3 Pump Repair-Parts manual for the motor/gear
ratio used on your pump:
1.5/35.91
1.0/100.36
50 RPM
Maximum Pump Speed
Maximum Environmental
Temperature
Minimum Environmental
Temperature
122°F
14°F
50°C
–10°C
Maximum Flow
EP3019 Pump
Fluid Capacity per Revolution
EP3019 Pump
Hose Inner Diameter
EP3019 Pump
Noise
2.4 gpm
9.1 lpm
0.048 gal.
0.18 liters
19 mm
Sound Pressure
Dimensions
Less than 80 dB(A)
Height
16.65 in.
13.52 in.
11.81 in.
27.39 in.
142.7 lb
423 mm
344 mm
300 mm
696 mm
64.9 kg
Width with hose installed
Width without hose installed
Length
Weight
Fluid Inlet and Outlet Size
Wetted Parts
3/4 npt(m)
Pump
Powder coated aluminum.
Hose
See the Parts Matrix in the EP3 Pump Repair-Parts manual.
Barbed Fitting
Stainless steel or Hastelloy. See the Parts Matrix in the EP3 Pump
Repair-Parts manual.
24
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EP4 Pumps
U.S.
125 psi
Metric
0.9 MPa, 9 bar
See the EP4 Pump Repair-Parts manual for the motor/gear
ratio used on your pump:
Maximum Fluid Working Pressure
Motor Horsepower/Gear Ratio
2.0/19.70
2.0/34.29
2.0/79.72
130 RPM
Maximum Pump Speed
Maximum Environmental
Temperature
Minimum Environmental
Temperature
122°F
14°F
50°C
–10°C
Maximum Flow
EP4029 Pump
Fluid Capacity per Revolution
EP4029 Pump
Hose Inner Diameter
EP4029 Pump
Noise
19.5 gpm
0.15 gal.
73.8 lpm
0.56 liters
29 mm
Sound Pressure
Dimensions
Less than 80 dB(A)
Height
19.35 in.
16.86 in.
15.91 in.
34.15 in.
252 lb
492 mm
428 mm
404 mm
868 mm
114.5 kg
Width with hose installed
Width without hose installed
Length
Weight
Fluid Inlet and Outlet Size
Wetted Parts
1–1/4 npt(m)
Pump
Powder coated aluminum.
Hose
See the Parts Matrix in the EP4 Pump Repair-Parts manual.
Barbed Fitting
Stainless steel or Hastelloy. See the Parts Matrix in the EP4 Pump
Repair-Parts manual.
3A1938E
25
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EP3019 Hose Pump
EP4029 Hose Pump
7
20
18
16
14
12
10
8
6
5
4
3
2
1
0
6
4
2
0
0
20
40
60
80
100
120
0
20
40
60
80
100
120
Pump Speed (rpm)
Pump Speed (rpm)
3A1938E
27
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Graco Standard Warranty
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its
name to be free from defects in material and workmanship on the date of sale to the original purchaser for
use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a
period of twelve months from the date of sale, repair or replace any part of the equipment determined
by Graco to be defective. This warranty applies only when the equipment is installed, operated and
maintained in accordance with Graco’s written recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction,
damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper
maintenance, negligence, accident, tampering, or substitution of non-Graco component parts. Nor shall
Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment
with structures, accessories, equipment or materials not supplied by Graco, or the improper design,
manufacture, installation, operation or maintenance of structures, accessories, equipment or materials
not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an
authorized Graco distributor for verification of the claimed defect. If the claimed defect is verified, Graco
will repair or replace free of charge any defective parts. The equipment will be returned to the original
purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material
or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of
parts, labor, and transportation.
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY
OF FITNESS FOR A PARTICULAR PURPOSE.
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above.
The buyer agrees that no other remedy (including, but not limited to, incidental or consequential damages
for lost profits, lost sales, injury to person or property, or any other incidental or consequential loss) shall
be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IN CONNECTION WITH
ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT MANUFACTURED BY
GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.),
are subject to the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable
assistance in making any claim for breach of these warranties.
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from
Graco supplying equipment hereunder, or the furnishing, performance, or use of any products or other
goods sold hereto, whether due to a breach of contract, breach of warranty, the negligence of Graco, or
otherwise.
FOR GRACO CANADA CUSTOMERS
The Parties acknowledge that they have required that the present document, as well as all documents,
notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or
indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la rédaction du
présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés,
donnés ou intentés, à la suite de ou en rapport, directement ou indirectement, avec les procédures
concernées.
Graco Information
To place an order, contact your Graco Distributor or call to identify the nearest distributor.
Phone: 612-623-6921 or Toll Free: 1-800-328-0211 Fax: 612-378-3505
All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
Original Instructions. This manual contains English, MM 3A1938
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS, MN 55440-1441 • USA
Copyright 2011, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
Revision E, June 2014
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