Graco T2 295616 User manual

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2007, Graco Inc. is registered to I.S. EN ISO 9001
Instructions
T2 311882 rev.A
2:1 Ratio Transfer Pump
For use with polyurethane foam, polyurea, and similar non-flammable materials.
Not for use in explosive atmospheres.
Model 295616
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.
Save these instructions.
ti9889a

Warnings
2311882A
Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . 4
Moisture Sensitivity of Isocyanates . . . . . . . . . . . . 7
Isocyanate Hazard . . . . . . . . . . . . . . . . . . . . . . . 7
Foam Self-Ignition . . . . . . . . . . . . . . . . . . . . . . . . 7
Keep Components A and B Separate . . . . . . . . . 7
Changing Materials . . . . . . . . . . . . . . . . . . . . . . . 7
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Grounding the System . . . . . . . . . . . . . . . . . . . . 9
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Pressure Relief Procedure . . . . . . . . . . . . . . . . 10
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Daily Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Daily Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . 10
Air Motor Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pump Lower Repair . . . . . . . . . . . . . . . . . . . . . . . . 12
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Performance Chart . . . . . . . . . . . . . . . . . . . . . . 19
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 20
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 20
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-
tion 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.
WARNING
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

Warnings
311882A 3
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 forms from distributor or retailer.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manu-
facturer’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.
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.
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.
WARNING

Typical Installation
4311882A
Typical Installation
Typical Installation, without Circulation
Key for FIG. 1
A Reactor Proportioner
BHeatedHose
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
FIG. 1: Typical Installation, without Circulation
A
B
C*
DE
K
L
M
F
P
N
* Shown exposed for clarity. Wrap with tape during operation.
K
H
J
G
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Typical Installation
311882A 5
Typical Installation, with Circulation
Key for FIG. 2
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
FIG. 2: 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
ti8488a

Typical Installation
6311882A
Typical Installation for Lubrication Applications
Key for FIG. 3
A Pump Air Regulator
B Air Line Lubricator
C Air Line Filter
D Bleed-Type Master Air Valve (required, for pump)
E Fluid Drain Valve (required)
F Bung Adapter
G Grounded Air Hose
H Grounded Fluid Hose
J Pump Fluid Inlet
K 1/4 npt(f) Pump Air Inlet
L 1/2 npt(f) Pump Fluid Outlet
FIG. 3: Typical Installation for Lubrication Applications
AB C D
E
F
H
J
J
K
L
G
01349
D

Moisture Sensitivity of Isocyanates
311882A 7
Moisture Sensitivity of
Isocyanates
Isocyanates (ISO) are catalysts used in two component
foam and polyurea coatings. ISO will react with moisture
(such as humidity) to form small, hard, abrasive crystals,
which become suspended in the fluid. Eventually a film
will form on the surface and the ISO will begin to gel,
increasing in viscosity. If used, this partially cured ISO
will reduce performance and the life of all wetted parts.
To prevent exposing ISO to moisture:
• Always use a sealed container with a desiccant
dryer in the vent, or a nitrogen atmosphere. Never
store ISO in an open container.
• Use moisture-proof hoses specifically designed for
ISO, such as those supplied with your system.
• Never use reclaimed solvents, which may contain
moisture. Always keep solvent containers closed
when not in use.
• Never use solvent on one side if it has been
contaminated from the other side.
• Always lubricate threaded parts with Part 217374
ISO pump oil or grease when reassembling.
Isocyanate Hazard
Foam Self-Ignition
Keep Components A and B
Separate
Changing Materials
• When changing materials, flush the equipment
multiple times to ensure it is thoroughly clean.
• Check with your material manufacturer for chemical
compatibility.
• Most materials use ISO on the A side, but some use
ISO on the B side.
• Epoxies often have amines on the B (hardener)
side. Polyureas often have amines on the B (resin)
side.
The amount of film formation and rate of
crystallization varies depending on the blend of
ISO, the humidity, and the temperature.
Read material manufacturer’s warnings and material
MSDS to know the specific hazards of isocyanates.
Use equipment in a well-ventilated area. Wear
respirator, gloves, and protective clothing when using
isocyanates.
Some materials may become self-igniting if applied
too thick. Read material manufacturer’s warnings and
material MSDS.
CAUTION
To prevent cross-contamination of the equipment’s
wetted parts, never interchange component A
(isocyanate) and component B (resin) parts.

Setup
8311882A
Setup
1. Apply thread sealant to the male threads of the air
needle valve (48) and the quick disconnect fitting
(49) and install. See FIG. 4
2. Apply thread sealant to the male outlet fitting (not
supplied) and insert into the outlet port. See FIG. 5.
3. When applying component labels (70) to pump cap
(1) make sure you do not cover the hole in the cap.
Use the “A” label for the ISO pump and the “B” label
for the resin pump. See FIG. 5 and FIG. 6.
4. Lubricate the bung adapter inside diameter and
mounting threads. Ensure the gasket is in place and
screw the bung adapter (51) securely into the bung-
hole of the drum. Insert the pump through the
adapter and lock it in place. See FIG. 7.
FIG. 4
FIG. 5
48 49
1
Apply thread sealant
1
1
ti9968a
Apply thread sealant
1
1
1
Hole (do not obstruct
with Component label
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FIG. 6
FIG. 7
Hole (do not obstruct
with Component label)
51
Lubricate threads
2
2
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Setup
311882A 9
5. Install air line (3/8 in. (76 mm) ID minimum) with
quick disconnect air coupler (52) provided. See FIG.
8.
Grounding the System
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.
1. Pump: Connect Ground Wire (Y) to grounding screw
(72) and tighten the screw securely. See FIG. 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.
2. Air compressor: according to manufacturer’s recom-
mendations.
3. Fluid hoses: use only grounded hoses with a maxi-
mum of 500 ft (150 m) combined hose length to
ensure grounding continuity. Refer to Hose Ground-
ing Continuity.
4. Dispensing valve: grounding is obtained through
connection to a properly grounded fluid hose and
pump.
5. Object being sprayed: according to local code.
6. Fluid supply container: according to local code.
7. All solvent pails used when flushing, according to
local code. Use only metal pails, which are conduc-
tive. Do not place the pail on a non–conductive sur-
face, such as paper or cardboard, which interrupts
the grounding continuity.
8. To maintain grounding continuity when flushing or
relieving pressure, always hold a metal part of the
spray gun/dispensing valve firmly to the side of a
grounded metal pail, then trigger the gun/valve.
FIG. 8
FIG. 9
52
ti9970
Y
72
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Operation
10 311882A
Operation
Pressure Relief Procedure
1. Engage trigger lock.
2. Close the bleed-type master air valve.
3. Disengage the trigger lock.
4. Hold a metal part of the dispense valve firmly to a
grounded metal pail. Trigger the valve to relieve
pressure.
5. Engage the trigger lock.
6. 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.
7. 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
1. Follow Pressure Relief Procedure, page 10.
2. Place suction tube in grounded metal pail containing
cleaning fluid.
3. Set pump to lowest possible fluid pressure, and start
pump.
4. Hold a metal part of the dispense valve firmly to a
grounded metal pail. Trigger the dispense valve until
clean solvent dispenses.
5. Remove valve from hose.
6. Follow Pressure Relief Procedure, and remove
fluid filter and soak in solvent. Replace filter cap.
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.
Daily Shutdown
1. Disconnect air line coupler.
2. When air pressure is bled off, close the air line nee-
dle valve.
Trapped air can cause the pump to cycle unexpectedly,
which could result in serious injury from splashing or
moving parts.
Trapped air can cause the pump to cycle unexpectedly,
which could result in serious injury from splashing or
moving parts.
• 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.
Caution
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 personal injury and/or dam-
age 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.