WLD
Instructions
T2
311882U
2:1 Ratio Transfer Pump
For use with polyurethane foam, polyurea, and similar non-flammable materials. For
professional use only.
Not approved for use in European explosive atmosphere locations.
Model 295616 (55-gallon drum)
180 psi (1.2 MPa, 12 bar) Maximum Air Working Pressure
405 psi (2.7 MPa, 27 bar) Maximum Fluid Working Pressure
Important Safety Instructions
Read all warnings and instructions in
this manual before using the equipment.
Save these instructions.
EN
Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Important Isocyanate (ISO) Information. . . . . . . . . 5
Isocyanate Conditions . . . . . . . . . . . . . . . . . . . . . 5
Material Self-Ignition . . . . . . . . . . . . . . . . . . . . . . 6
Keep Components A and B Separate . . . . . . . . . 6
Moisture Sensitivity of Isocyanates . . . . . . . . . . . 6
Foam Resins with 245 fa Blowing Agents . . . . . . 7
Changing Materials . . . . . . . . . . . . . . . . . . . . . . . 7
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Typical Installation, without Circulation . . . . . . . . 8
Typical Installation, with Circulation . . . . . . . . . . . 9
Typical Installation for Lubrication Applications . 10
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
System Accessories. . . . . . . . . . . . . . . . . . . . . . 11
Air Line Accessories . . . . . . . . . . . . . . . . . . . . . 11
Fluid Line Accessories . . . . . . . . . . . . . . . . . . . . 11
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Grounding the System . . . . . . . . . . . . . . . . . . . . 13
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 14
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Daily Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Daily Shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . 15
Repair the Air Motor . . . . . . . . . . . . . . . . . . . . . . . . 16
Repair the Pump Lower . . . . . . . . . . . . . . . . . . . . . 18
Reassemble the Air Motor and the Pump Lower . 21
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Parts - Model 295616 . . . . . . . . . . . . . . . . . . . . . . . 22
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Performance Chart . . . . . . . . . . . . . . . . . . . . . . . . . 26
Calculate Fluid Outlet Pressure (black curves) . 26
Calculate Pump Air Consumption (gray curves). 26
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Technical Specifications . . . . . . . . . . . . . . . . . . . . 29
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 30
Graco Information. . . . . . . . . . . . . . . . . . . . . . . . . . 30
2 311882U
Warnings
WARNING
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 risk.
Refer back to these warnings. Additional, product-specific warnings may be found throughout the body of this manual
where applicable.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read MSDS’s 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.
• Always wear impervious gloves when spraying or cleaning equipment.
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, inhalation of toxic
fumes, burns, and hearing loss. This equipment includes but is not limited to:
• Protective eyewear
• Clothing and respirator as recommended by the fluid and solvent manufacturer
• Gloves
• Hearing protection
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 Specifications in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical
Specifications in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For
complete information about your material, request MSDS forms from distributor or retailer.
• 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.
311882U 3
Warnings
WARNING
PRESSURIZED EQUIPMENT HAZARD
Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and
cause serious injury.
• Follow Pressure Relief Procedure in this manual, when you stop spraying 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.
BURN HAZARD
Equipment surfaces and fluid that is heated can become very hot during operation. To avoid severe
burns:
• Do not touch hot fluid or equipment.
MOVING PARTS HAZARD
Moving parts can pinch 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 in this manual. Disconnect power or air supply
4 311882U
Important Isocyanate (ISO) Information
TOXIC FUMES
HAZARD
DO NOT ENTER DURING
SPRAY FOAM APPLICATION
OR FOR ___ HOURS AFTER
APPLICATION IS COMPLETE
DO NOT ENTER UNTIL:
DATE:
TIME:
____________
____________
Important Isocyanate (ISO) Information
Isocyanates (ISO) are catalysts used in two component materials.
Isocyanate Conditions
Spraying or dispensing fluids that contain isocyanates creates potentially harmful mists, vapors, and atomized
particulates.
• Read and understand the fluid manufacturer’s warnings and Safety Data Sheets (SDSs) to know specific
hazards and precautions related to isocyanates.
• Use of isocyanates involves potentially hazardous procedures. Do not spray with this equipment unless you
are trained, qualified, and have read and understood the information in this manual and in the fluid
manufacturer’s application instructions and SDSs.
• Use of incorrectly maintained or mis-adjusted equipment may result in improperly cured material, which could
cause off gassing and offensive odors. Equipment must be carefully maintained and adjusted according to
instructions in the manual.
• To prevent inhalation of isocyanate mists, vapors and atomized particulates, everyone in the work area must
wear appropriate respiratory protection. Always wear a properly fitting respirator, which may include a
supplied-air respirator. Ventilate the work area according to instructions in the fluid manufacturer’s SDSs.
• Avoid all skin contact with isocyanates. Everyone in the work area must wear chemically impermeable
gloves, protective clothing and foot coverings as recommended by the fluid manufacturer and local regulatory
authority. Follow all fluid manufacturer recommendations, including those regarding handling of
contaminated clothing. After spraying, wash hands and face before eating or drinking.
• Hazard from exposure to isocyanates continues after spraying. Anyone without appropriate personal
protective equipment must stay out of the work area during application and after application for the time
period specified by the fluid manufacturer. Generally this time period is at least 24 hours.
• Warn others who may enter work area of hazard from exposure to isocyanates. Follow the recommendations
of the fluid manufacturer and local regulatory authority. Posting a placard such as the following outside the
work area is recommended:
311882U 5
Important Isocyanate (ISO) Information
Spraying or dispensing fluids that contain isocyanates
creates potentially harmful mists, vapors, and
atomized particulates.
Keep Components A and B Separate
• Read and understand the fluid manufacturer’s
warnings and Safety Data Sheets (SDSs) to know
specific hazards and precautions related to
isocyanates.
• Use of isocyanates involves potentially hazardous
procedures. Do not spray with this equipment
unless you are trained, qualified, and have read
and understood the information in this manual and
in the fluid manufacturer’s application instructions
and SDSs.
• Use of incorrectly maintained or mis-adjusted
equipment may result in improperly cured
material. Equipment must be carefully maintained
and adjusted according to instructions in the
manual.
• To prevent inhalation of isocyanate mists, vapors,
and atomized particulates, everyone in the work
area must wear appropriate respiratory protection.
Always wear a properly fitting respirator, which
may include a supplied-air respirator. Ventilate the
work area according to instructions in the fluid
manufacturer’s SDSs.
• Avoid all skin contact with isocyanates. Everyone
in the work area must wear chemically
impermeable gloves, protective clothing and foot
coverings as recommended by the fluid
manufacturer and local regulatory authority.
Follow all fluid manufacturer recommendations,
including those regarding handling of
contaminated clothing. After spraying, wash
hands and face before eating or drinking.
Material Self-Ignition
Some materials may become self-igniting if applied
too thick. Read material manufacturer’s warnings and
Safety Data Sheets (SDSs).
Cross-contamination can result in cured material in
fluid lines which could cause serious injury or
damage equipment. To prevent cross-contamination:
• Never interchange component A and component
B wetted parts.
• Never use solvent on one side if it has been
contaminated from the other side.
Moisture Sensitivity of Isocyanates
Exposure to moisture (such as humidity) will cause ISO
to partially cure, forming small, hard, abrasive crystal
that become suspended in the fluid. Eventually a film will
form on the surface and the ISO will begin to gel,
increasing in viscosity.
NOTICE
Partially cured ISO will reduce performance and the life
of all wetted parts.
• Always use a sealed container with a desiccant
dryer in the vent, or a nitrogen atmosphere. Never
store ISO in an open container.
• Keep the ISO pump wet cup or reservoir (if
installed) filled with appropriate lubricant. The
lubricant creates a barrier between the ISO and the
atmosphere.
• Use only moisture-proof hoses compatible with
ISO.
• Never use reclaimed solvents, which may contain
moisture. Always keep solvent containers closed
when not in use.
• Always lubricate threaded parts with an appropriate
lubricant when reassembling.
NOTE: The amount of film formation and rate of
crystallization varies depending on the blend of ISO, the
humidity, and the temperature.
6 311882U
Important Isocyanate (ISO) Information
Foam Resins with 245 fa Blowing Agents
Some foam blowing agents will froth at temperatures
above 90°F (33°C) when not under pressure, especially
if agitated. To reduce frothing, minimize preheating in a
circulation system.
Changing Materials
NOTICE
Changing the material types used in your equipment
requires special attention to avoid equipment damage
and downtime.
• When changing materials, flush the equipment
multiple times to ensure it is thoroughly clean.
• Always clean the fluid inlet strainers after flushing.
• Check with your material manufacturer for
chemical compatibility.
• When changing between epoxies and urethanes or
polyureas, disassemble and clean all fluid
components and change hoses. Epoxies often
have amines on the B (hardener) side. Polyureas
often have amines on the B (resin) side.
311882U 7
Typical Installation
A
B
C*
D
E
K
L
M
F
P
N
* Shown exposed for clarity. Wrap with tape during operation.
K
H
J
G
ti11572a
Typical Installation
Typical Installation, without Circulation
FIG. 1: Typical Installation, without Circulation
Key:
A Reactor Proportioner
BHeated Hose
C Fluid Temperature Sensor (FTS)
D Heated Whip Hose
E Fusion Spray Gun
F Proportioner and Gun Air Supply Hose
G Feed Pump Air Supply Lines (3/8 in. (76 mm) ID min.
H Waste Containers
J Fluid Supply Lines (217382)
K Feed Pumps
L Agitator
M Desiccant Dryer
N Bleed Lines/Over Pressure Relief
P Gun Fluid Manifold
8 311882U
Typical Installation, with Circulation
A
B
C*
D
E
K
L
M
F
N
P
* Shown exposed for clarity. Wrap with tape during operation.
J
N
K
M
G
ti11571a
Typical Installation
FIG. 2: Typical Installation, with Circulation
Key:
A Reactor Proportioner
B Heated Hose
C Fluid Temperature Sensor (FTS)
D Heated Whip Hose
E Fusion Spray Gun
F Proportioner and Gun Air Supply Hose
G Feed Pump Air Supply Lines (3/8 in. (76 mm) ID min)
J Fluid Supply Lines
K Feed Pumps
L Agitator
M Desiccant Dryer
N Recirculation/Over Pressure Relief Return Hoses
P Gun Fluid Manifold
311882U 9
Typical Installation
AA AB
AC
AD
AE
AF
AH
J
AJ
CE
AK
AG
01349
AD
Typical Installation for Lubrication Applications
FIG. 3: Typical Installation for Lubrication Applications
Key:
AA Pump Air Regulator
AB Air Line Lubricator
AC Air Line Filter
AD Bleed-Type Master Air Valve (required, for pump)
AE Fluid Drain Valve (required)
AF Bung Adapter
AG Grounded Air Hose
AH Grounded Fluid Hose
AJ Pump Fluid Inlet
AK 1/4 npt(f) Pump Air Inlet
AL 3/4 npt(f) Pump Fluid Outlet
10 311882U
Installation
A bleed-type master air valve (D) and a fluid drain
valve (E) are required in your system, to help reduce
the risk of serious injury, including splashing fluid in
the eyes or on the skin, and injury from moving parts
when you are adjusting or repairing the pump.
• The bleed-type master air valve (D) relives air
trapped between this valve and the pump after the
pump is shut off. Trapped air can cause the pump
to cycle unexpectedly and result in serious injury,
including amputation. Install the valve close to the
pump.
• The fluid drain valve (E) helps relieve pressure in
the displacement pump, hose, and dispensing
valve when shutting off the pump. Actuating the
dispensing valve to relieve pressure may not be
sufficient, especially if there is a clog in the hose or
the spray gun or dispensing valve.
System Accessories
Installation
Air Line Accessories
Install the following accessories in the order shown in
the Gun Fluid Manifold, page 9, using adapters as
necessary:
An air line lubricator (AB) provides automatic air
motor lubrication.
A bleed-type master air valve (AD) is required in your
system to relieve air trapped between it and the air
motor when the valve is closed (see the WARNING on
left). Be sure the bleed valve is easily accessible from
the pump, and is located downstream from the air
regulator.
An air line filter (AC) to remove harmful dirt and
moisture from the compressed air supply.
A second bleed-type air valve (AD) isolates the air line
accessories for servicing. Locate upstream from all
other air line accessories.
To ensure maximum pump performance, be sure that all
accessories used are properly sized to meet your
system’s requirements. See Accessories, page 24.
Fluid Line Accessories
A fluid drain valve (BA) is required in your system to
relieve fluid pressure in the hose and gun (see the
WARNING on left). Install the drain valve so that it
points down and the handle points up when the valve is
opened.
311882U 11
Setup
WLD
48
49
1
Apply thread sealant
1
1
Apply thread sealant
1
1
1
51
Lubricate threads
2
2
Setup
1. Apply thread sealant to the male threads of the air
needle valve (48) and the quick disconnect fitting
(49) and install. See F
IG. 4
FIG. 4
2. Apply thread sealant to the male outlet fitting (not
supplied) and insert into the outlet port. See F
IG. 5.
3. Use labels (70) provided to identify the appropriate
pump for your material. See F
IG. 5.
FIG. 6
4. Lubricate the bung adapter inside diameter and
mounting threads. Install supplied handles and
tighten the jam nuts. Install supplied handles and
tighten the jam nuts. Ensure the gasket is in place
and screw the bung adapter (51) securely into the
bunghole of the drum. Insert the pump through the
adapter and lock it in place. See F
IG. 7.
FIG. 5
12 311882U
FIG. 7
Setup
52
WLD
Y
72
5. Install air line (3/8 in. (76 mm) ID minimum) with
quick disconnect air coupler (52) provided. See F
8.
FIG. 8
Grounding the System
IG.
Pump: Connect Ground Wire (Y) to grounding screw
(72) and tighten the screw securely. See F
IG. 9.
Connect the other end of the wire to a true earth ground.
Make certain to comply with all National, State, and
Local Electrical Codes.
FIG. 9
Air compressor: Follow manufacturer’s
recommendations.
Fluid hoses: Use only grounded hoses with a
maximum of 300 ft (91 m) combined hose length to
ensure grounding continuity. Refer to Hose Grounding
Continuity.
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes to
ignite or explode. Grounding provides an escape wire
for the electric current.
To reduce the risk of static sparking, ground the pump
and all other equipment used or located in the pumping
area. Check your local electrical code for detailed
grounding instructions for your area and type of
equipment. Ground all of this equipment.
Dispensing valve: Ground through connection to a
properly grounded fluid hose and pump.
Object being sprayed: Follow local code.
Fluid supply container: Follow local code.
Solvent pails used when flushing: Follow local code.
Use only conductive metal pails, placed on a grounded
surface. Do not place the pail on a nonconductive
surface, such as paper or cardboard, which interrupts
grounding continuity.
To maintain grounding continuity when flushing or
relieving pressure: Hold metal part of the spray
gun/dispense valve firmly to the side of a grounded
metal pail, then trigger the gun/valve.
311882U 13
Operation
Operation
Pressure Relief Procedure
Follow the Pressure Relief Procedure
whenever you see this symbol.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid and moving parts, follow the Pressure Relief
Procedure when you stop spraying and before
cleaning, checking, or servicing the equipment.
1. Shut off the air to the pump.
2. Close the bleed-type master air valve (D).
3. Hold a metal part of the dispense valve firmly to a
grounded metal pail. Trigger the valve to relieve
pressure.
4. Open all fluid drain valves in the system, having a
waste container ready to catch drainage. Leave
drain valve(s) open until you are ready to dispense
again.
5. If you suspect the nozzle or hose is clogged or that
pressure has not been fully relieved after following
the steps above, VERY SLOWLY loosen the hose
end coupling to relieve pressure gradually, then
loosen completely. Clear hose or nozzle
obstruction.
Flushing
To avoid fire and explosion, always ground
equipment and waste container. To avoid static
sparking and injury from splashing, always flush at
the lowest possible pressure.
Hot solvent may ignite. To avoid fire and explosion:
• Flush equipment only in a well-ventilated area
• Flush at the lowest pressure possible. Check
connectors for leaks and tighten as necessary.
• Flush with a fluid that is compatible with the fluid
being dispensed and the equipment wetted parts.
1. Follow Pressure Relief Procedure, page 14.
2. Allow the fluid in the system to cool.
3. Remove spray tip and soak in solvent.
4. Place pump fluid inlet in grounded metal pail
containing cleaning fluid.
5. Set pump to lowest possible fluid pressure, and start
pump.
6. Hold a metal part of the gun or dispense valve firmly
to a grounded metal pail. Trigger the gun or
dispense valve until clean solvent dispenses.
7. Remove gun or dispense valve from hose. See gun
manual to further clean gun or dispense valve.
8. Follow Pressure Relief Procedure, page 14, and
Remove fluid filter and soak in solvent. Replace
filter cap.
14 311882U
Operation
Daily Startup
1. Verify that the air needle valve is closed.
2. Connect the air line quick disconnect coupler to the
transfer pump
3. Turn on the main air supply.
4. Slowly open the air needle valve until the transfer
pump runs slowly.
5. Use the air needle valve to control the pump speed.
NOTICE
Never allow the pump to run dry of the fluid being
pumped. A dry pump will quickly accelerate to a high
speed and could cause damage to the pump. If the
pump accelerates quickly or starts running too fast,
stop it immediately and check the fluid supply. If the
supply container is empty or air has been pumped
into the lines, refill the container and prime the pump
and the lines with fluid, or flush and leave it filled with
a compatible solvent. Be sure to eliminate all air from
the fluid system.
Do not attempt to operate pump unless it is securely
mounted in a drum.
Daily Shutdown
1. Disconnect air line coupler.
2. When air pressure is bled off, close the air line
needle valve.
311882U 15
Repair the Air Motor
WLD
1
*3
*3
4
5
*13
*15
18
WLD
5
*13
*15
Repair the Air Motor
NOTE: Air valve assembly has changed to series B for
improved performance. Parts are not interchangeable
between series A and B air motor. Series A air valves
can be upgraded to series B with kit 262042.
1. Relieve the pressure. Follow Pressure Relief
Procedure, page 14.
2. Remove cap (1), cylinder (4), and square gaskets
(3*). Inspect all parts, including spring under cap
(not shown in F
necessary. See F
chain wrench to prevent distortion of the cylinder’s
shape.
IG. 10) for damage and replace if
IG. 10. Unscrew by hand or use a
3. Series A air motors only: Loosen set screw (18)
and unscrew air valve (5). If necessary to assist
turning, wedge a screwdriver blade between the
screw heads and the hex cap of air valve (5).
Discard items 5, 13, 15, and 18. See F
IG. 11.
FIG. 10
NOTE: Cap (1) was replaced with a spring stop
assembly for improved spring life. Existing pumps can
be upgraded with Kit 24T043.
NOTE: Series A air motors have thin, flat, white seals in
air valve. Series B (and later) air motors have thicker
black seals in the air valve.
FIG. 11: Series A Air Valve
4. Series B (and later Air Motors): Unscrew air
valve (5). If necessary to assist turning, wedge a
screwdriver blade between the screw heads and the
hex cap of the air valve (5). Inspect o-rings (13* and
15*) for damage and replace if necessary. Ensure
o-ring (13*) is correctly positioned and not pinched.
See F
IG. 12.
FIG. 12 Series B Air Valve
16 311882U
Repair the Air Motor
WLD
21
69
69
17
75
WLD
19
*50
17
20
WLD
21
22
23
*24
5. Align slot of shield (75) with piston hole and place
pin tool (69) in piston hole to prevent piston from
turning. Use second pin tool (69) to unscrew piston
cap (17) and separate from piston (21) to expose
dowel pin (19). See F
IG. 13.
FIG. 13
7. Slide air piston (21) out the top of the air motor base
(23). Remove o-ring (24*) from air motor base.
Inspect all parts, including the spring (22) in the air
motor base, for damage. See F
IG. 15.
FIG. 15
6. Remove dowel pin (19) and take piston cap (17) off
transfer shaft (20). Remove o-ring (50*) from piston
cap. Inspect all parts for damage. See F
FIG. 14
IG. 14.
311882U 17
Repair the Pump Lower
44
Apply chain wrench
approximately here
ti9903
46
47
71
*38
45
Apply chain wrench
approximately here
44
44
ti9976
38
34
Apply chain wrench
approximately here
Repair the Pump Lower
n
1. Relieve the pressure. Follow Pressure Relief
Procedure, page 14.
1. Allow the fluid in the system to cool.
2. Use a chain wrench near the top of the suction tube
at the point indicated in F
the flats of the foot valve (45) to loosen the foot
valve from the suction tube (44). To prevent
damage to the suction tube, do not remove the foot
valve until instructed to do so in step 4.
IG. 16, and a wrench on
FIG. 17
FIG. 16
NOTICE
When removing the suction tube, be very careful not
to bend, dent, or damage it. To avoid damage, use
the chain wrench only at the top and bottom of the
suction tube as indicated in F
IG. 16 and FIG. 17. Do
not apply the wrench to the middle of the suction
tube.
3. With the foot valve still in place to support the
suction tube, use a chain wrench near the bottom of
the suction tube at the point indicated in F
IG. 17, to
loosen the suction tube (44) from the pump body
(34).
4. Remove the foot valve assembly from the suction
tube (44).
5. Remove retaining ring (46), snap ring (47), ball (71),
and o-ring (38*) from foot valve (45). Inspect all
parts for damage. See F
IG. 17.
6. Remove suction tube (44) from pump body (34).
See F
IG. 18.
7. Inspect o-ring (38) on pump body and suction tube
for damage. See F
IG. 18.
18 311882U
FIG. 18
Repair the Pump Lower
ti9905
20
34
ti9904b
56
*40
*41
42
43
53
Lip up
55
54
74
r_311880_14e_fig21
36
35
55
37
36
*35
54
Lip down
r_311882_14e_fig22
8. Pull transfer shaft (20) out the bottom of pump body
(34). See F
IG. 19.
FIG. 19
9. Remove pin (56). Remove piston valve assembly.
Unscrew piston valve (43) from piston housing (53).
Remove wear ring (41*), u-cup (40*) and ball (42).
Inspect all parts for damage. See F
IG. 20.
10. Remove pins (55). See F
IG. 21.
FIG. 21
NOTE: Series A and B pumps were equipped with
springs pins. In Series C pumps, these pins were
replaced with a solid clevis pin (55, 56).
11. Loosen set screw (37) from collar (36). Remove
collar from piston housing (54). Remove u-cup
(35*). Inspect all parts for damage. See F
IG. 22.
FIG. 22
FIG. 20
311882U 19
Repair the Pump Lower
WLD
26
*33
*32
34
WLD
75
60
26
25
WLD
Seal stack enlarged
to show detail.
27
*30
*29
*28
*31
69
75
12. Unscrew mounting flange (26) from pump body
(34). Remove o-ring (32*) and PTFE gasket (33*)
from pump body (34). Inspect all parts for damage.
See F
IG. 23.
NOTE: Align a bottom slot of the shield (75) and use pin
tool (69) to loosen the hex nut/packings from the pump
shaft.
14. Unscrew three fasteners (60) to remove the flange
(26) and tie-rods (25). Slide the guard (75) out.
Unscrew the tie rods (25) using the wrench flats at
the bottom.
FIG. 23
13. Remove hex nut (27) from mounting flange (26).
Remove female gland (30*), 2 PTFE packings (29*),
male gland (28*) and wiper (31*). Inspect all parts
for damage. See F
IG. 25.
FIG. 25
FIG. 24
20 311882U
Reassemble the Air Motor and the Pump Lower
Reassemble the Air Motor and the Pump Lower
To reassemble the pump lower and air motor, reverse
the steps on the preceding pages. Follow the torque
requirements listed in the Parts - Model 295616
drawing on page 22.
NOTE: See Repair the Air Motor, page 16, step 4 and
step 5 (F
IG. 12) for special notes on reassembly.
Troubleshooting
1. Follow Pressure Relief Procedure, page 14,
before checking or repairing pump.
2. Check all possible problems and causes before
disassembling pump.
Problem Cause Solution
The pump fails to operate Dirty or worn air motor. Clean, service
Inadequate air supply or restricted
lines.
Closed or clogged air valves. Open or clear the valves.
Clogged fluid hose or valve. Clear the hose or valves
Worn or damaged valves or seals. Service the valves or seals.
Clean lines or increase the air
supply (see Technical Data).
The pump operates, but the output
is low on both strokes.
The pump operates, but the output
is low on the downstroke.
The pump operates, but the output
is low on the upstroke.
Erratic or accelerated operation. Exhausted fluid supply. Refill the fluid supply and reprime
Pump slowly moves after fluid
shutoff in downstroke.
Pump slowly moves after fluid
shutoff in upstroke.
Clogged fluid hose or valve. Clear the hose or valves.
Exhausted fluid supply. Refill the fluid supply and reprime
the pump.
Worn or damaged valves or seals. Service the valves or seals.
Held open or worn intake valve. Clear or service the valve.
Worn or damaged valves or seals. Service the valves or seals.
Held open or worn piston valve. Clear or service the valve.
Worn or damaged valves or seals. Service the valves or seals.
the pump.
Broken air motor compression
spring.
Clogged or dirty intake valve check
ball.
Worn or damaged valves or seats. Install repair kit.
Clogged or dirty lower piston ball or
seat.
Worn or damaged valves or seats. Install repair kit.
Replace the spring.
Clean ball and seat.
Clean ball and seat.
311882U 21
Parts - Model 295616
WLF
4
2
*3
1
*32
*28
*29
*30
27
25
24*
23
22
21
*33
60
53
56
37
36
39
34
42
43
44
46
47
71
38
45
41
40
54
38
31*
26
72
51b
51c
51a
51
Bung Adapter
Lubricate all o-rings and seals before and after assembly
Torque to 45-55 ft-lb (61-74.5 N•m)
Torque to 30-40 ft-lb (40.6-54.2 N•m)
Torque to 15-20 ft-lb (20.3-27.1 N•m)
Torque to 10-12 ft-lb (13.5-16.3 N•m)
Torque to 110-120 in-lb (12.3-13.4 N•m)
1
234
5
6
2
3
4
5
6
8
9
5
6
8
4
7
74
73
35
19
17
*50
20
51h
55
75
76
77
3*
5d
5a*
5e
5j*
5g
5f
5h*
5b*
5c
5
4
51j
Torque to 20-30 in-lb (2.2-3.3 N•m)
Torque to 50-60 in-lb (5.6-6.7 N•m)
Tighten 1/8 to 1/4 turn past finger-tight
789
Parts - Model 295616
22 311882U
Parts - Model 295616
Ref Part Description Qty
1‡ 16V524 CAP, air cylinder
2‡ 157630 SPRING, tapered
3‡* 120212 PACKING, square
4 24J528 CYLINDER, air motor
5 262035 VALVE, air
5a* 15J539 GASKET, upper
5b* 121889 O-RING
5c 15J544 SPACER
5d 121610 SCREW
5e 16U730 CAP, air, valve
5f 15V554 HEAD, air valve
5g 15J546 DISK, air valve
5h* 160258 O-RING
5j* 722834 O-RING
17 CAP, air piston
19 15J548 PIN, dowel
20 SHAFT, transfer
21 24J535 PISTON, air
22 15J551 SPRING, compression
23 24J529 BASE, air motor
24* 159846 O-RING (green)
25 15J553 ROD, tie
26 24J530 FLANGE, mounting
27 15J555 NUT, hex
28* 15J556 GLAND, packing, (male)
29* 15J557 V-PACKING, PTFE
30* 15J558 GLAND, packing, (female)
31* 15J559 WIPER, ROD
32* 15C638 O-RING, PTFE, encapsulated
33* 15J560 GASKET, PTFE
34 24J536 BODY, pump, 2:1
35 15J562 PACKING, piston cup
36 15J563 COLLAR, retaining
37 101194 SCREW, set, socket head,
10-32 x .25 in. (6 mm)
38 106258 O-RING
39 24J534 CYLINDER, fluid
40 15J565 PACKING, u-cup, PTFE
41
42 103462 BALL, outlet, sst, 3/4 in. (19 mm)
43 24J531 VALVE, piston
44 24J532 TUBE, suction
45 24J533 VALVE
46 120734 RING, retaining, internal
47 120735 RING, snap, e series
48† 206264 VALVE, needle
49† 169969 FITTING, air line
50* 108832 O-RING
51 253146 ADAPTER, bung
51a 120998 O-RING, fluoroelastomer
51b ----------- ADAPTER
15J566 RING, wear
(includes 51a-51g)
Ref Part Description Qty
51c 234188 CLAMP, hopper
1
51h 120207 O-RING; inner (brown)
1
51J 26A699PKG HANDELS with jam nut
2
52† 114558 COUPLER, air line
1
53 15J570 HOUSING, piston
1
54 PISTON, upper
1
55 120294 PIN, clevis, 3/16 in. x 3/4 in.
3
56 120295 PIN, clevis, 3/16 in. x 1-1/4 in.
3
60 120348 SCREW, cap, socket head
3
1
69† 15H197 TOOL, pin
1
70† 15K008 LABEL, material identification.
1
71 107167 BALL, intake, sst, 1 in. (25 mm)
1
72 116343 SCREW, ground
1
73 113944 O-RING
1
74 SHAFT, transfer, lower
1
75 24V858 GUARD
1
76‡ 111819 O-RING
1
77‡ 16V523 PIN, spring stop
1
1
1
* Parts included in Upper Seal Repair Kit 262034 (not sold
3
1
1
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
separately).
Parts included in Lower Seal Repair Kit 247883.
NOTE: Seal Repair Kit 24X056 includes all parts in kit
262034 and kit 247883. The spring pins (55, 56) originally
supplied in series A and B pumps have been upgraded to a
solid clevis pin for improved reliability.
Parts included in repair kit 256560
NOTE: The pump shaft originally supplied in series A
pumps has been upgraded to a multi-piece assembly for
better sealing and serviceability. Pumps can be upgraded
with repair kit 256560.
Parts included in repair kit 262042
NOTE: The air valve originally supplied in series A pumps
can be upgraded with kit 262042.
† Indicates parts not shown, 48, 49, 52, 69, 70
(shipped loose)
O-rings included in Tube Extension Kit 24N451.
‡ Parts included in air cap 24T043
NOTE: The cylinder cap has been upgraded with spring
stop for improved reliability. Existing pumps can be
upgraded with Kit 24T043.
The T2 can be adapted for use in 250 gallon (946 liter)
totes. Tube Extension 24N451 increases the length by
6.25 in. (165 mm) to reach material in the bottom of
larger totes.
1/4-20 x 1 in. (25 mm)
1
1
1
1
1
2
1
3
2
1
1
1
1
1
1
1
1
311882U 23
Accessories
01355
Accessories
Grounding Clamp
Part Description Qty.
103538 CLAMP, ground
Bleed-Type Master Air Valve
300 psi (2.1 MPa, 21 bar) Maximum Working
Pressure
Part Description Qty.
107142 VALVE, ball, vented; 1/2 npt(m) inlet x
1/2 npt(f) outlet
Part Description Qty.
214848 LUBRICATOR, air line; 8 oz (0.24 liter)
bowl capacity; 1/2 npt(f) inlet and outlet
1
Air Line Filter and Regulator
180 psi (1.3 MPa, 13 bar) Maximum Working
Pressure
Part Description Qty.
202660 FILTER, air; includes gauge and two 1/4
1
npt(m) outlet valves, 50 micron filter
element with 100 mesh inlet strainer; 1/2
npt(f) inlet; flow rate is over 50 scfm (1.4
3
m
/min).
1
1
Air Line Filter
250 psi (1.7 MPa, 17.5 bar) Maximum Working
Pressure
Part Description Qty.
106149 FILTER, air line; 1/2 npt(f) inlet and
outlet
Air Line Lubricator
250 psi (1.7 MPa, 17.5 bar) Maximum Working
Pressure
Air Regulator and Gauge
1
300 psi (2.1 MPa, 21 bar) Maximum Working
Pressure
24 311882U
Accessories
Part Description Qty.
202156 REGULATOR, air; 0-200 psi (0-14 bar)
regulated pressure range; 3/8 npt(f) inlet
and outlet
Fluid Drain Valve
500 psi (3.5 MPa, 35 bar) Maximum Working
Pressure
Part Description Qty.
1
208630 VALVE, ball; 1/2 npt(m) x 3/8 npt(f); for
non-corrosive fluids; carbon steel and
PTFE
237534 VALVE, ball; 3/8 npt(m) x 3/8 npt(f); for
corrosive fluids; SST and PTFE
1
1
311882U 25
Performance Chart
A
B
C
D
A
B
C
D
Fluid Flow in gpm (lpm)
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
0.0
100
200
300
400
500
Air Consumption in SCFM (m
3
/min)
Key: Air Pressure
A 180 psi (1.2 MPa, 12.4 bar)
B 100 psi (0.7 MPa, 7 bar)
C 70 psi (0.5 MPa, 4.8 bar)
D 40 psi (0.3 MPa, 2.8 bar)
Outlet Pressure in PSI (MPa, bar)
(3.5, 34.5)
(2.8, 28)
(2.1, 21)
(1.4,14)
(0.7, 7)
0.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
(1.1)
(0.6)
(1.0)
(0.8)
(0.7)
(0.4)
(0.3)
(0.1)
(17.1)(15.2)(13.3)(9.5)(5.7)(1.9) (11.4)(7.6)(3.8)
Performance Chart
Calculate Fluid Outlet Pressure (black curves)
To calculate fluid outlet pressure (MPa/bar/psi) at a
specific fluid flow (lpm/gpm) and operating air pressure
(MPa/bar/psi), use the following instructions and pump
data chart.
1. Locate desired fluid flow along bottom of chart.
2. Follow vertical line up to intersection with selected
air pressure curve (black). Follow horizontally left to
read fluid outlet pressure.
Calculate Pump Air Consumption (gray curves)
To calculate pump air consumption (m3/min or scfm) at
a specific fluid flow (lpm/gpm) and air pressure
(MPa/bar/psi), use the following instructions and pump
data chart.
1. Locate desired fluid flow along bottom of chart.
2. Follow vertical line up to intersection with selected
air pressure curve (gray). Follow horizontally right to
read air consumption.
26 311882U
Dimensions
WLD
3/4 npt outlet
54 in. (137.2 cm)
33.7 in. (85.6 cm)
1/4 npt inlet
Dimensions
311882U 27
Dimensions
28 311882U
Technical Specifications
Technical Specifications
T2, 2:1 Ratio Transfer Pump
US Metric
Pressure ratio 2.25:1
Maximum fluid working pressure 405 psi 2.8 MPa, 28 bar
Maximum air inlet pressure 180 psi 1.2 MPa, 12 bar
Maximum continuous outlet flow 5 gpm 20 lpm
Maximum intermittent outlet flow 7.5 gpm 28 lpm
Pump cycles per 1 gallon (3.8 liters) 15.9
Maximum recommended pump speed for con-
tinuous operation
Gallons (liters) per pump cycle 0.034 gpm 0.128 lpm
Maximum ambient operating temperature 120°F 49°C
Maximum fluid temperature 190°F 88°C
Inlet/Outlet Sizes
Air inlet size
Fluid outlet size 3/4 npt (f)
Materials of Construction
Wetted materials Stainless steel, PTFE
Weight
All models 21 lb. 9.5 kg
Noise (dBa)
Maximum sound pressure*
Maximum sound power**
*Sound pressure measured 3.28 feet (1 meter) from equipment.
**Sound power measured per ISO-9614-2.
100 cpm (150 cpm intermittent)
1/4 npt(f)
88.7 dB(A) at 80 psi (.55 MPa, 5.5 bar)
96.8 dB(A) at 80 psi (.55 MPa, 5.5 bar)
311882U 29
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
For the latest information about Graco products, visit www.graco.com.
For patent information, see www.graco.com/patents.
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 INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA
Copyright 2018, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
Graco reserves the right to make changes at any time without notice.
Original instructions. This manual contains English. MM 311882
International Offices: Belgium, China, Japan, Korea
Graco Headquarters: Minneapolis
www.graco.com
Revision U,
April 2019
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