Graco 308639L User Manual
Instructions – Parts List
ALUMINUM
Huskyt3275 Air–Operated
Diaphragm Pump
3–inch pump for fluid transfer applications. For professional use only.
120 psi (0.8 MPa, 8 bar) Maximum Incoming Air Pressure
120 psi (0.8 MPa, 8 bar) Maximum Fluid Working Pressure
* Part No. DK3XXX
Part No. 232505 Private–Label Aluminum 3275 Pump (See page 20.)
Part No. 24D619 Private–Label Aluminum 3275 Pump (See page 20.)
* This model is certified.
US and Foreign Patents Pending
308639L
ENG
Important Safety Instructions
Read all warning and instructions in this
manual. Save these instructions.
Refer to the Pump Matrix on page 20 to
determine the Part No. of your pump.
Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 11. . . . . . . . . . . . . . . . . . . . . . . . .
Service 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Matrix 20. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair Kit Matrix 21. . . . . . . . . . . . . . . . . . . . . . . .
Parts Drawing 22. . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Lists 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 24. . . . . . . . . . . . . . . . . . . . . . . . . .
Torque Sequence 25. . . . . . . . . . . . . . . . . . . . . . .
Dimensional Drawings 26. . . . . . . . . . . . . . . . . . .
Performance Charts 27. . . . . . . . . . . . . . . . . . . . .
Graco Standard Warranty 30. . . . . . . . . . . . . . . .
Graco Information 30. . . . . . . . . . . . . . . . . . . . . . .
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Warnings
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
WARNING
EQUIPMENT MISUSE HAZARD
INSTRUCTIONS
Any misuse of the equipment or accessories, such as overpressurizing, modifying parts, using
incompatible chemicals and fluids, or using worn or damaged parts, can cause them to rupture and
result in splashing in the eyes or on the skin, other serious injury, or fire, explosion or property damage.
D This equipment is for professional use only. Observe all warnings. Read and understand all
instruction manuals, warning labels, and tags before you operate the equipment.
D Never alter or modify any part of this equipment; doing so could cause it to malfunction. Use only
genuine Graco parts and accessories.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
D Check all equipment regularly and repair or replace worn or damaged parts immediately.
D Never exceed the recommended working pressure or the maximum air inlet pressure stated on
your pump or in the Technical Data on page 24.
D Do not exceed the maximum working pressure of the lowest rated component in your system.
This equipment has a 120 psi (0.8 MPa, 8 bar) maximum working pressure at 120 psi
(0.8 MPa, 8 bar) maximum incoming air pressure.
D Be sure that all fluids and solvents used are chemically compatible with the wetted parts shown in
the Technical Data on page 24. Always read the manufacturer’s literature before you use fluid
or solvent in the pump.
D Never move or lift a pump under pressure. If dropped, the fluid section may rupture. Always
follow the Pressure Relief Procedure on page 9 before you move or lift the pump.
D The pump weighs approximately 150 lb (68 kg) If it must be moved, use the lift ring, or have two
people lift the pump by grasping the outlet manifold.
2 308639
WARNING
HAZARDOUS FLUIDS
Improper handling of hazardous fluids or inhaling toxic vapors can cause extremely serious injury or
death from to splashing in the eyes, ingestion, or bodily contamination. Observe all the following
precautions when handling known or potentially hazardous fluids.
D Know what fluid you are pumping and its specific hazards. Take precautions to avoid a toxic fluid
spill.
D Always wear appropriate clothing and equipment, such as eye protection and breathing appara-
tus, to protect yourself.
D Store hazardous fluid in an appropriate, approved container. Dispose of it according to all Local,
State and Federal guidelines for hazardous fluids.
D Secure the fluid outlet hose tightly into the receiving container to prevent it from coming loose
and improperly draining the fluid.
D Pipe and dispose of the exhaust air safely, away from people, animals, and food handling areas.
If the diaphragm fails, the fluid is exhausted along with the air. See Air Exhaust Ventilation on
page 7.
FIRE AND EXPLOSION HAZARD
Static electricity is created by the flow of fluid through the pump and hose. If the equipment is not
properly grounded, sparking may occur. Sparks can ignite fumes from solvents and the fluid being
pumped, dust particles, and other flammable substances, whether you are pumping indoors or
outdoors, and can cause a fire or explosion and serious injury and property damage.
D To reduce the risk of static sparking, ground the pump and all other equipment used or located in
the work area. Check your local electrical code for detailed grounding instructions for your area
and type of equipment. Refer to Grounding on page 4.
D If you experience any static sparking or even a slight shock while using this equipment, stop
pumping immediately. Check the entire system for proper grounding. Do not use the system
again until the problem has been identified and corrected.
D Pipe and dispose of the exhaust air safely, away from all sources of ignition. If the diaphragm
fails, the fluid is exhausted along with the air. See Air Exhaust Ventilation on page 7.
D Do not smoke in the work area. Do not operate the equipment near a source of ignition or an
open flame, such as a pilot light.
HALOGENATED HYDROCARBON HAZARD
Never use 1,1,1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
fluids containing such solvents in aluminum pumps. Such use could result in a serious chemical
reaction, with the possibility of explosion, which could cause death, serious injury, and/or substantial
property damage.
Consult your fluid suppliers to ensure that the fluids used are compatible with aluminum parts.
United States Government safety standards have been adopted under the Occupational Safety and Health Act.
You should consult these standards—particularly the General Standards, Part 1910, and the Construction
Standards, Part 1926.
3308639
Installation
General Information
D The Typical Installation shown in Fig. 2 is only a
guide for selecting and installing system
components. Contact your Graco distributor for
assistance in planning a system to suit your needs.
D Always use genuine Graco parts and accessories.
D Reference numbers and letters in parentheses refer
to the callouts in the figures and in the Parts
Drawing on page 22 and the Parts Lists on pages
23 and 24.
WARNING
HAZARDOUS FLUIDS
To reduce the risk of serious injury,
splashing in the eyes or on the skin, and
toxic fluid spills, never move or lift a
pump under pressure. If dropped, the fluid section
could rupture. Always follow the Pressure Relief
Procedure on page 9 before you move or lift the
pump.
D The pump is very heavy. If it must be moved, have
two people lift the pump by grasping the outlet
manifold (50). See the Parts Drawing on page 22.
Grounding
WARNING
ELECTRIC SHOCK HAZARD
This pump must be grounded. The
steps for grounding may differ from the
way you ground other pumps. Read and
carefully follow the grounding instructions below
before you operate the pump.
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:
D Pump: Connect a ground wire and clamp as shown
in Fig. 1. Loosen the grounding lug locknut (W)
and washer (X). Insert one end of a 12 ga (1.5
mm@) minimum ground wire (Y) into the slot in the
lug (Z), and tighten the locknut securely. Connect
the clamp end of the ground wire to a true earth
ground. To order a ground wire and clamp, order
Part No. 222011.
Use a compatible thread sealant on all male threads.
Tighten all connections firmly to avoid air or fluid leaks.
CAUTION
To avoid pump damage, do not overtighten the
fittings to the pump.
Tightening Screws Before First Use
Before using the pump for the first time, check and
retorque all external fasteners. See Torque
Sequence, page 25. After the first day of operation,
retorque the fasteners. Although pump use varies, a
general guideline is to retorque fasteners every two
months.
Y
X
W
Z
Fig. 1
D Air compressor: Follow the manufacturer’s
recommendations.
D Air and fluid hoses: Use only grounded hoses with
a maximum of 500 ft (150 m) combined hose
length to ensure grounding continuity.
D All solvent pails used when flushing: Follow the
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 grounding continuity.
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4 308639
D Fluid supply container: Follow the local code.
Installation
FLOOR-MOUNT TYPICAL INSTALLATION
KEY
A Air supply hose
B Bleed-type master air valve
(required for pump)
C Air regulator
D Air line quick disconnect
E Master air valve (for accessories)
F Air line filter
G Fluid suction hose
H Fluid supply
J Ball valve (for releasing collected moisture)
L Fluid outlet hose
N Air inlet port
R Fluid inlet port
S Fluid outlet port
Y Ground wire (required; see page 4
for installation instructions)
A
B
C
F
E
S
L
Fig. 2
N
D
Y
H
R
G
J
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5308639
Installation
Mountings
CAUTION
The pump exhaust air may contain contaminants.
Ventilate to a remote area if contaminants could
affect your fluid supply. See Air Exhaust Ventila-
tion on page 7.
D Be sure the mounting can support the weight of the
pump, hoses, and accessories, as well as the
stress caused during operation.
D For all mountings, be sure the pump is secured with
screws through the mounting feet (58). See the
mounting feet in the Parts Drawing on page 22.
Air Line
WARNING
A bleed-type master air valve and a fluid drain
valve are required on your system.
The bleed-type master air valve relieves air
trapped between itself and the pump. Trapped air
can cause the pump to cycle unexpectedly, which
could result in serious bodily injury, including
splashing in the eyes, injury from moving parts, or
contamination from hazardous fluids.
The fluid drain valve reduces the risk of serious
bodily injury, including splashing in the eyes or on
the skin, or contamination from hazardous fluids.
Install the fluid drain valve close to the pump’s
fluid outlet to relieve pressure in the hose if the
hose becomes plugged.
2. Install a flexible air hose between the accessories
and the pump air inlet. Screw the air line fitting
into the air inlet.
3. Do not restrict the exhaust port. Excessive
exhaust restriction can cause erratic pump
operation.
Fluid Lines
WARNING
Graco always recommends that you use grounded
fluid hoses to dissipate static electricity. When
pumping non-conductive flammable fluids, grounded fluid hoses are required. See Fire and Explo-
sion Hazard on page 3.
Fluid Outlet Line
1. Attach the fluid outlet hose to the fluid outlet flange
by using a 3-in. ANSI or DIN flanged hose or pipe.
2. Install a fluid drain valve near the fluid outlet. See
the WARNING in the Air Line section at left.
Fluid Suction Line
Attach the fluid suction hose to the pump fluid inlet
flange by using a 3-in. ANSI or DIN flanged fluid
suction hose or pipe.
D If the inlet pressure to the pump is more than 25
percent of the outlet working pressure, the ball
check valves do not close fast enough, which
results in inefficient pump operation.
D At inlet fluid pressures over 15 psi (100 kPa, 1.0
bar), diaphragm life is shortened.
1. Mount the air line accessories on the wall or on a
bracket. Be sure the air line supplying the
accessories is grounded.
a. The pump speed can be controlled in one of
two ways: To control it on the air side, install
an air regulator. To control it on the fluid side,
install a fluid valve near the outlet.
b. Install a bleed-type master air valve
downstream from the air regulator, and use it
to relieve trapped air. See the WARNING,
above. Locate another bleed-type master air
valve upstream from all air line accessories,
and use it to isolate the accessories during
cleaning and repair.
c. The air line filter removes harmful dirt and
moisture from the compressed air supply.
6 308639
D The maximum suction lift is 8 ft (2.5 m) of water dry
or 28 ft (8.5 m) of water wet. For suction lifts
between 8 ft (2.5 m) and 28 ft (8.5 m) of water, it is
necessary to install a foot valve, and it is necessary
to flood the suction to prime the pump. The pump
may prime better if you reduce the inlet air pressure
until the pump is primed.
Installation
Air Exhaust Ventilation
Changing Manifold Orientation
(See Fig. 6 on page 14)
The outlet manifold (50) and inlet manifold (53) can be
rotated to best suit your installation needs. The pump
is shipped with the inlet and outlet facing in the same
direction.
1. Remove the screws (54) from each end of the
manifold (50 or 53).
2. Turn the manifold to the desired position, and
reinstall the screws (54). Torque to 55 to 60 ft-lb
(75 to 81 NSm). See Torque Sequence, page 25.
NOTE: To ensure proper seating, visually check
that the manifold is centered on the fluid covers
(51) before you tighten the screws (54).
Fluid Pressure Relief Valve
CAUTION
Some systems may require installation of a pressure relief capability at the pump outlet to prevent
overpressurization and rupture of the pump or
hose.
Thermal expansion of fluid in the outlet line can
cause overpressurization if the fluid line is close
ended. Such overpressurization can occur when
using long fluid lines exposed to sunlight or ambient heat, or when pumping from a cool to a warm
area (for example, from an underground tank).
WARNING
TOXIC FLUID HAZARD
Be sure to read and follow the USING
HAZARDOUS FLUIDS, and FIRE OR
EXPLOSION HAZARD warnings on
page 3, before you operate this pump.
Be sure the system is properly ventilated
for your type of installation. You must
vent the exhaust to a safe place, away
from people, animals or food handling
areas when pumping flammable or
hazardous fluids.
The minimum size for the air exhaust hose is1 in.
(25.4 mm) ID x 5 ft. (1.5 m). If a longer hose is
required, use a larger diameter hose. Avoid sharp
bends or kinks in the hose.
If the diaphragm ruptures, the fluid being pumped
will be exhausted with the air. Place a container at
the end of the air exhaust line to catch fluid in case
the diaphragm ruptures.
The air exhaust port is 1 npt(f). Do not restrict the air
exhaust port. Excessive exhaust restriction can cause
erratic pump operation.
To provide a remote exhaust:
1. Remove the muffler (60) from the pump air
exhaust port.
2. Install a grounded air exhaust hose (T) and
connect the muffler (60) to the other end of the
hose. The minimum size for the air exhaust hose
is 1 in. (25.4 mm) ID x 5 ft (1.5 m). If a longer
hose is required, use a larger diameter hose.
Avoid sharp bends or kinks in the hose. See
Fig. 3.
3. Place a container (U) at the end of the air exhaust
line to catch fluid in case a diaphragm ruptures.
7308639
Installation
VENTING EXHAUST AIR
KEY
A Air supply line
E
FC
B
B Bleed-type master air valve
(required for pump)
C Air regulator
D Air Line quick disconnect
E Master air valve (for accessories)
F Air line filter
J Ball valve (for releasing collected moisture)
P Muffler
T Grounded air exhaust hose
U Container for remote air exhaust
Fig. 3
D
A
J
T
U
60
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8 308639
Operation
Pressure Relief Procedure
WARNING
To reduce the risk of serious injury, including
splashing fluid in the eyes or on the skin, follow this
procedure whenever you are instructed to relieve
pressure, when you shut off the pump, and before
you check, adjust, clean, move, or repair any
system equipment.
1. Shut off the air to the pump.
2. Open any available outbound fluid valves to relieve
fluid pressure from the pump.
3. If fluid is still in the outbound fluid lines, isolate this
fluid as follows:
a. Close the outbound fluid valves.
b. Slowly remove the fluid connections from the
pump, and have a container ready to catch
any fluid that runs out.
Flush the Pump Before First Use
The pump was tested in water. If water could
contaminate the fluid you are pumping, flush it
thoroughly with a compatible solvent. Follow the
procedure in Starting and Adjusting the Pump.
3. Place the suction tube (if used) in the fluid to be
pumped.
NOTE: If the inlet pressure to the pump is more
than 25 percent of the outlet working pressure, the
ball check valves will not close fast enough,
resulting in inefficient pump operation.
4. Place the end of the outlet hose into an
appropriate container.
5. Close the fluid drain valve.
6. With the air regulator closed, open all bleed-type
master air valves.
7. If the outlet hose has a dispensing device, hold it
open while continuing with step 8.
8. Slowly open the air regulator until the pump starts
to cycle. Allow the pump to cycle slowly until all air
is pushed out of the lines and the pump is primed.
If you are flushing, run the pump long enough to
thoroughly clean the pump and hoses, close the
air regulator, and remove the suction hose from
the solvent and place it in the fluid to be pumped.
If you are shutting down the pump, remove the
suction hose from the fluid container, run the pump
until the fluid is forced out of the system, and shut
off the air supply immediately.
If you are going to use the pump, start the pump
again, and place the suction hose in the supply
container.
Starting and Adjusting the Pump
WARNING
To reduce the risk of serious injury, splashing in
the eyes or on the skin, and toxic fluid spills,
never move or lift a pump under pressure. If the
pump is dropped, the fluid section could rupture.
Always follow the Pressure Relief Procedure
above before you move or lift the pump.
1. Be sure the pump is properly grounded. Read and
follow the instructions in Grounding on page 4.
2. Check all fittings to be sure they are tight. Be sure
to use a compatible liquid thread sealant on all
male threads.
Pump Shutdown
At the end of the work shift and before checking,
adjusting, cleaning, or repairing the system, relieve
the pressure.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure at left.
9308639
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