Graco Heat Pump 233500 User Manual

Instructions–Parts List  
1:1 RATIO  
TRITONR 308  
309303V  
ENG  
Diaphragm Pump  
Used to pump waterborne and solvent–based paints and catalysts. For  
professional use only.  
115 psi (0.8 MPa, 8 bar) Maximum Fluid Working Pressure  
115 psi (0.8 MPa, 8 bar) Maximum Air Input Pressure  
Part No. 233500 Aluminum Pump, Series D, npt threads  
Part No. 233501 Stainless Steel Pump, Series C, npt threads  
Part No. 233776 Aluminum Pump, Series C, BSPP threads  
Part No. 233777 Stainless Steel, Series C, BSPP threads  
U.S. and Foreign Patents Pending  
Important Safety Instructions  
Read all warnings and instructions in this manual.  
Save these instructions.  
ti1029a  
Part No. 233501 Shown  
 
WARNING  
EQUIPMENT MISUSE HAZARD  
Equipment misuse can cause the equipment to rupture, malfunction, or start unexpectedly and result  
in a serious injury.  
INSTRUCTIONS  
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D Read all instruction manuals, tags, and labels before operating the equipment.  
D Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor.  
D Do not alter or modify this equipment. Use only genuine Graco parts and accessories.  
D Check equipment daily. Repair or replace worn or damaged parts immediately.  
D Do not exceed the maximum working pressure of the lowest rated component in your system. This  
equipment has a 115 psi (0.8 MPa, 8 bar) maximum working pressure at 115 psi (0.8 MPa, 8  
bar) maximum incoming air pressure.  
D Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-  
nical Data section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.  
D Aluminum pumps only: Never use 1.1.1–trichloroethane, methylene chloride, other halogenated  
hydrocarbon solvents or fluids containing such solvents in pressurized aluminum equipment. Such  
use could result in a chemical reaction, with the possibility of explosion.  
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D Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose  
Graco hoses to temperatures above 180_ F (82_ C) or below –40_ F (–40_ C).  
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309303  
3
 
WARNING  
FIRE AND EXPLOSION HAZARD  
Improper grounding, poor air ventilation, open flames, or sparks can cause a hazardous condition and  
result in fire or explosion and serious injury.  
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D If there is any static sparking or you feel an electric shock while using this equipment, stop pump-  
ing immediately. Do not use the equipment until you identify and correct the problem.  
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being pumped.  
D Keep the work area free of debris, including solvent, rags, and gasoline.  
D Electrically disconnect all equipment in the work area.  
D Extinguish all open flames or pilot lights in the work area.  
D Do not smoke in the work area.  
D Do not turn on or off any light switch in the work area while operating or if fumes are present.  
D Do not operate a gasoline engine in the work area.  
4
309303  
 
WARNING  
PRESSURIZED FLUID HAZARD  
Spray from the gun, hose leaks, or ruptured components can splash fluid in the eyes or on the skin  
and cause serious injury.  
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equipment.  
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loose. Permanently coupled hoses cannot be repaired.  
TOXIC FLUID HAZARD  
Hazardous fluids or toxic fumes can cause a serious injury or death if splashed in the eyes or on the  
skin, swallowed, or inhaled.  
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local, state, and national guidelines.  
D Wear appropriate protective clothing, gloves, eyewear, and respirator.  
D If the diaphragm fails, the fluid is exhausted along with the air.  
309303  
5
 
Installation  
General Information  
WARNING  
D Fig. 2 shows a wall mounted HVLP spray applica-  
tion. It is only a guide for selecting and installing  
system components. Contact your Graco distributor  
for assistance in planning a system to suit your  
needs.  
FIRE AND EXPLOSION HAZARD  
To prevent hazardous concentrations of  
toxic and/or flammable vapors, spray  
only in a properly ventilated spray booth.  
Never operate the spray gun unless  
ventilation fans are operating.  
D Always use Genuine Graco Parts and Accessories,  
available from your Graco distributor. If you supply  
your own accessories, be sure they are adequately  
sized and pressure rated for your system.  
Check and follow all of the national,  
state, and local codes regarding air  
exhaust velocity requirements.  
D Use a compatible, liquid thread sealant on all male  
threads. Tighten all connections firmly to avoid air  
or fluid leaks.  
WARNING  
TOXIC FLUID HAZARD  
NOTE: On all npt threads, tighten to 2–3 turns past  
finger tight.  
Hazardous fluid or toxic fumes can  
cause serious injury or death if splashed  
in the eyes or on the skin, inhaled, or  
swallowed.  
D Reference numbers and letters in parentheses refer  
to the callouts in the figures and the parts lists on  
pages 23–22.  
1. Read TOXIC FLUID HAZARD on page 5.  
2. Use fluids and solvents which are compatible  
with the equipment wetted parts. Refer to the  
Technical Data section of all equipment manu-  
als. Read the fluid and solvent manufacturer’s  
warnings.  
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Tightening Threaded Fasteners Before  
First Use  
Mounting the Pump  
NOTE: Before using pump, loosen fluid cover screws  
(38) 1–2 turns and then retorque to 13.6 NSm  
(10 ft–lb).  
D Mount the pump in a well-ventilated area, with  
sufficient clearance on all sides for operator access  
and servicing.  
See the Service section for torque specifications.  
D Be sure the mounting can support the weight of the  
pump, hoses, and accessories, as well as the  
stress caused during operation.  
D After unpacking the pump, and before using it for  
the first time, check and retorque all external fas-  
teners.  
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ly. Be sure the pump is level in all directions.  
D
After the first day of operation, retorque the fasten-  
ers.  
D Wall, pail, stand, or portable cart mounting kits are  
available from Graco. For other mountings, be sure  
the pump is adequately secured. The pump has  
two mounting holes for 0.35 in. (9 mm) screws. See  
the Dimension drawing on page 25.  
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two months.  
6
309303  
 
Installation  
Grounding  
35  
Y
WARNING  
FIRE AND EXPLOSION HAZARD  
This pump must be grounded. Before  
operating the pump, ground the system  
as explained below. Also read the sec-  
tion FIRE AND EXPLOSION HAZARD  
on page 4.  
ti1030b  
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 equip-  
ment.  
Fig. 1  
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hoses.  
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mendations.  
Ground all of this equipment:  
D Solvent pails used when flushing: Follow your 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.  
D Pump: Attach a ground wire (Y) to the pump’s  
grounding screw (35) and secure with the screw, as  
shown in Fig. 1. Connect the clamp end of the  
ground wire to a true earth ground. Order Part No.  
238909 Ground Wire and Clamp.  
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309303  
7
 
Installation  
b. Locate a bleed-type master air valve (B) close  
Air Line  
to the pump, to relieve trapped air. See the  
WARNING at left. Locate another air valve (E)  
upstream from all air line accessories, to  
isolate them during cleaning and repair.  
WARNING  
A bleed-type master air valve (B) is required in your  
system to relieve air trapped between this valve  
and the pump. See Fig. 2. Trapped air can cause  
the pump to cycle unexpectedly, which could result  
in serious injury, including splashing in the eyes or  
on the skin, injury from moving parts, or contamina-  
tion from hazardous fluids.  
c. Install an air line filter (D) to remove harmful  
contaminants such as dirt, moisture, and oil  
from the compressed air supply.  
2. The air valve does not require lubrication.  
1. Install the air line accessories as shown in Fig. 2.  
Mount these accessories on the wall or on a  
bracket. Be sure the air line supplying the acces-  
sories is electrically conductive.  
3. Install an electrically conductive, flexible air hose  
(C) between the accessories and the pump air inlet  
(T). Use a minimum 1/4” (6.3 mm) ID air hose.  
Screw an air line quick disconnect coupler (V) onto  
the end of the air hose and screw the mating fitting  
into the pump air inlet snugly. Do not connect the  
coupler to the fitting yet.  
a. The fluid pressure can be controlled in two  
ways, either by controlling the air into the  
pump with the air regulator (F) or the fluid out  
of the pump with the fluid regulator (H).  
8
309303  
 
Installation  
Wall Mount HVLP Spray Installation Shown  
KEY  
A
B
TRITON 308 Pump  
Bleed-type master air valve  
(required for pump)  
C
D
E
F
Air supply line  
Air line filter  
Air line shutoff valve  
Pump air regulator  
G
H
Gun air regulator (used in spray system only)  
Fluid pressure regulator (used in spray  
system only)  
S
J
K
L
M
N
P
Drain/circulation valve  
Drain tube  
Suction tube  
Pump fluid inlet  
Pump fluid outlet  
H
J
Y
R
E
D
Fluid hose (shown connected to gun in spray  
system)  
R
S
T
Gun air hose (used in spray system only)  
Spray gun (used in spray system only)  
Pump air inlet  
U
V
Y
Agitator (used in spray system only)  
Air line quick disconnect  
Ground wire  
P
B
V
C
L
U
Y
K
J
H
N
K
ti1020a  
G
T
F
A
M
L
B
ti1007a  
Fig. 2  
309303  
9
 
Installation  
Fluid Suction Line  
CAUTION  
Some systems may require installation of a pressure  
relief valve at the pump outlet to prevent overpres-  
surization and rupture of the pump or hose.  
D Screw the suction line (L) into the pump inlet (M)  
snugly. Use a compatible liquid thread sealant on  
connections to prevent air from getting into the fluid  
line.  
Thermal expansion of fluid in the outlet line can  
cause overpressurization. This 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).  
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suction lift.  
Overpressurization can also occur if the pump is  
being used to feed fluid to a piston pump, and the  
intake valve of the piston pump does not close,  
causing fluid to back up in the outlet line.  
D Use an agitator (U) to prevent fluid from settling  
out. Part No. 245081 Agitator Kit (accessory) is  
available.  
D
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the fluid fitting into the pump outlet (N) snugly.  
Fluid Outlet Line  
D Install a fluid regulator (H) at the pump fluid outlet  
to control fluid pressure, if desired. See Air Line,  
step 1a, for another method of controlling pressure.  
WARNING  
A fluid drain valve (J) is required in your system to  
relieve pressure in the hose if it is plugged. See  
Fig. 2. The drain valve reduces the risk of serious  
injury, including splashing in the eyes or on the  
skin, or contamination from hazardous fluids when  
relieving pressure. Install the valve close to the  
pump fluid outlet. To use the valve as a circulation  
valve, connect a tube (K) between the valve and  
pail.  
D Install a fluid drain valve (J) near the fluid outlet.  
See the WARNING at left.  
Flush the Pump Before First Use  
The pump was tested in lightweight oil. If the oil could  
contaminate the fluid you are pumping, flush the pump  
thoroughly with a compatible solvent. Follow the steps  
under Starting and Adjusting the Pump on page 11.  
10  
309303  
 
Operation  
4. Check all fittings to be sure they are tight. Use a  
Pressure Relief Procedure  
compatible liquid thread sealant on all male  
threads. Tighten the fluid inlet and outlet fittings  
snugly. Do not overtighten the fittings.  
WARNING  
NOTE: Before using he pump, re–torque fluid  
cover screws (38) to 10 ft–lb (13.6 NSm).  
The system remains pressurized until pressure is  
manually relieved. To reduce the risk of serious  
injury from pressurized fluid, accidental spray from  
the gun, or splashing of any fluid, follow this proce-  
dure whenever you  
5. Place the suction tube (L, if used) in the fluid to be  
pumped.  
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6. Place the fluid hose (P) in a container.  
7. Close the drain/circulation valve (J).  
D Are instructed to relieve pressure  
D Check or service any system equipment  
D Install, clean, or change spray nozzles  
8. Close the pump air regulator (F). Open all bleed-  
type master air valves (B, E).  
1. Shut off the bleed-type air valve (B).  
2. In a spray system, hold the gun (S) firmly against a  
grounded metal pail and trigger the gun to relieve  
the fluid pressure.  
9. If the fluid hose has a dispensing device, hold it  
open while continuing with the following step.  
Slowly open the air regulator (F) 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.  
3. Place the drain tube (K) in a waste pail. Open the  
drain/circulation valve (J) to relieve any fluid pres-  
sure trapped in the system.  
If you are flushing, run the pump long enough to  
thoroughly clean the pump and hoses. Close the  
air regulator. Remove the suction tube from the  
solvent and place it in the fluid to be pumped.  
Starting and Adjusting the Pump  
Read Toxic Fluid Hazard  
1.  
on page 5.  
Pump Shutdown  
If lifting the pump, follow the Pres-  
sure Relief Procedure above.  
2.  
WARNING  
To reduce the risk of serious injury whenever you  
are instructed to relieve pressure, always follow the  
Pressure Relief Procedure at left.  
Be sure the pump is  
properly grounded.  
Read Fire and  
3.  
Explosion Hazard  
on page 4.  
At the end of the work shift, flush the pump and relieve  
pressure.  
309303  
11  
 
Maintenance  
Tightening Threaded Connections  
Storage  
Before each use, check all hoses for wear or damage.  
Replace as necessary. Check that all threaded con-  
nections are tight and leak-free.  
Before storing the pump, always flush it and relieve  
pressure.  
NOTE: Periodically, re–torque fluid cover screws (38)  
to 10 ft–lb (13.6 NSm).  
Preventive Maintenance Schedule  
Establish a preventive maintenance schedule, based  
on the pump’s service history. This is especially impor-  
tant for prevention of spills or leakage due to dia-  
phragm failure.  
Cleaning  
Clean the outside of the equipment daily, using a soft  
cloth and compatible solvent.  
Clean the suction tube (L) and inlet strainer daily, using  
a compatible solvent.  
Clean the air filter (D) in your main air line at least  
once a week.  
Troubleshooting  
1. Relieve the pressure before checking or servicing  
WARNING  
the equipment.  
To reduce the risk of serious injury whenever you  
are instructed to relieve pressure, always follow the  
Pressure Relief Procedure on page 11.  
2. Check all possible problems and causes before  
disassembling the pump.  
PROBLEM  
Pump will not run.  
CAUSE  
Closed air line valve.  
SOLUTION  
Open valve.  
Inadequate air supply, or clogged/  
restricted air line.  
Increase air supply. Do not exceed  
maximum air inlet pressure.  
Open or clear air line.  
Clean air filter.  
Clogged pump, fluid line, or spray  
gun.  
Clear, service. Flush regularly. Do  
not allow fluid to set up in the pump  
and lines.  
Stuck or damaged pump air valve.  
Disassemble and clean air valve.  
Replace worn parts. See page 18.  
Use filtered air.  
Ruptured diaphragm.  
Replace diaphragms. See page 17.  
Air valve plate installed incorrectly.  
Align plate with center housing. See  
page 19.  
12  
309303  
 
Troubleshooting  
PROBLEM  
Pump runs sluggishly.  
Pump runs erratically.  
CAUSE  
SOLUTION  
Worn or damaged carriage o-rings. Service air valve. See page 18.  
Clogged suction line or inlet strainer. Clear.  
Sticking or leaking ball check  
valves.  
Disassemble and clean ball checks.  
Replace worn parts. See page 16.  
Pump runs too fast.  
Exhausted fluid supply.  
Worn ball check valves.  
Worn air valve cup or plate.  
Refill fluid supply and prime pump.  
Pump cycles at stall or fails to hold  
pressure at stall.  
Disassemble and clean ball checks.  
Replace worn parts. See page 16.  
Audible air leak.  
Service air valve. See page 18.  
Air exhausting from the mounting  
holes.  
Fluid covers are installed incorrectly. Align mounting holes in fluid covers  
with holes in center housing. See  
page 14.  
Fluid in the exhaust air.  
Air bubbles in fluid.  
Ruptured diaphragm.  
Loose suction line.  
Replace diaphragms. See page 17.  
Tighten. Use a compatible liquid  
thread sealant on connections.  
Ruptured diaphragm.  
Replace diaphragms. See page 17.  
Poor finish or irregular spray pat-  
tern.  
Incorrect fluid or air pressure at gun. See gun manual; read fluid  
manufacturer’s recommendations.  
Use fluid regulator.  
Fluid is too thin or too thick.  
Adjust fluid viscosity; read fluid  
manufacturer’s recommendations.  
Dirty, worn, or damaged spray gun. Service gun.  
Fluid is settling out. Use agitator. Order Part No. 245081  
Agitator Kit.  
309303  
13  
 
Service  
3. Remove the pump from its mounting.  
Remove the Fluid and Side Covers  
Tools Required  
CAUTION  
D
T
o
r
q
u
e
w
r
e
n
c
h
Be careful that the ball checks do not fall out when  
you remove the fluid covers (32).  
D 2.5 mm allen wrench  
D 6 mm allen wrench  
D Adjustable wrench  
4. Remove the six screws (38) and top cover (32)  
from the center housing (1). Remove the ball  
check seals (24). Remove the bottom cover and  
seals.  
Disassembly  
WARNING  
To reduce the risk of serious injury whenever you  
are instructed to relieve pressure, always follow the  
Pressure Relief Procedure on page 11.  
NOTE: Always replace the ball check seals (24) when-  
ever the fluid covers (32) are removed. These seals  
are included in the four repair kits.  
NOTE: Perform step 5 only if you are servicing the air  
valve or the diaphragm shaft.  
1. Relieve the pressure.  
5. Remove the two screws (39) and take off the side  
cover (31) and felt dampener (29).  
2. Disconnect the hoses and ground wire.  
14  
309303  
 
Service  
Remove the Fluid and Side Covers  
(continued)  
1
Align  
3
4
10 ft-lb (13.6 NSm)  
2
28 in-lb (3.1 NSm)  
Replace seals whenever  
cover (32) is removed.  
Reassembly  
38  
3
1. Clean all parts and inspect for wear or damage.  
Replace parts as needed.  
2. If necessary, reinstall the felt dampener (29) and  
side cover (31). Torque the screws (39) to 28 in-lb  
(3.1 NSm).  
32  
H
1
3. Install new ball check seals (24).  
24 4  
4. Place the fluid covers (32) on the housing (1).  
Align the mounting holes (H) in the fluid covers  
with the holes in the housing. Install the screws  
(38) loosely, then torque oppositely and evenly to  
10 ft-lb (13.6 NSm).  
1
H
1
24  
4
39  
2
31, 29  
5. Reinstall the pump on its mounting.  
6. Reconnect the ground wire and hoses.  
H 1  
32  
38  
ti1031a  
3
Fig. 3  
309303  
15  
 
Service  
Reassembly  
Ball Check Repair  
1. Reinstall the inlet and outlet ball checks on one  
side of the pump. The inlet and outlet checks are  
assembled differently. Install the parts exactly as  
shown in Fig. 4.  
Tools Required  
D O-ring pick  
Disassembly  
NOTE: Ball Check Repair Kit 245067 is available.  
Parts included in the kit are marked with a double  
dagger, for example (21}). Use all the parts in the kit  
for the best results.  
2. Install one cover (32) loosely, to prevent the ball  
checks from falling out. See page 14.  
3. Turn the pump over and install the ball checks on  
the opposite side, exactly as shown.  
1. Remove the fluid covers. See page 14.  
2. Remove the inlet and outlet ball checks. Note that  
the orientation of the inlet check parts is different  
from the outlet check parts. See Fig. 4.  
4. Reinstall the fluid covers. See page 14.  
NOTE: If the inlet seats (26) are difficult to remove,  
drive them out from the opposite side using a brass  
rod and hammer.  
3. Clean all parts and inspect for wear or damage.  
Replace parts as needed.  
1
24  
}
}
10 ft-lb (13.6 NSm)  
27  
1
32  
21  
}
}
Align  
2
}24  
}23  
26  
25}  
z
}21  
}27  
2
Inlet Ball Checks  
Outlet Ball Checks  
}
2
2
25}  
26  
}
}
}27  
}21  
}23  
}24  
21  
27  
}
}
24  
1
ti1032a  
Fig. 4  
16  
309303  
 
Service  
3. Thread an M8 hexnut (A) onto an M8 bolt. Screw  
Diaphragm Repair  
the bolt into the shaft (5) until it bottoms out.  
Thread the nut down to the shaft to lock it.  
Tools Required  
D M8 bolt  
D
M
8
h
e
x
n
u
t
4. Hold the nut with a wrench or vise to keep the  
shaft from turning. Unscrew the other diaphragm  
(6) by hand.  
D
A
d
j
u
s
t
a
b
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e
w
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n
c
h
,
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v
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e
NOTE: Diaphragm Repair Kit 245065 is available.  
Parts included in the kit are marked with an asterisk,  
for example (6*). Always replace both diaphragms for  
the best results.  
NOTE: If you cannot remove the second diaphragm,  
refer to Shaft Repair Disassembly on page 20.  
1. Remove the fluid covers. See page 14.  
Reassembly  
1. Screw the new diaphragms (6*) into the shaft (5)  
handtight.  
WARNING  
Wear gloves when removing the diaphragms to  
reduce the risk of cuts.  
2. Replace the ball check seals (24*) with the new  
seals in the kit.  
2. Unscrew one diaphragm (6) from the shaft (5) by  
hand. See Fig. 5.  
3. Reinstall the fluid covers. See page 14.  
2
10 ft-lb (13.6 NSm)  
38  
32  
1
1
Align  
2
3
2
Use M8 bolt and nut to keep shaft from turning.  
6*  
2
5
24*  
A 3  
*24  
2
1
*24  
24*  
*6  
32  
38  
1
ti1033a  
Fig. 5  
309303  
17  
 
Service  
5. Remove the retaining rings (11) and plug (9) from  
Air Valve Repair  
both sides, and slide the carriage (7) from the  
center housing (1). Remove the o-rings (8, 10)  
from the carriage and the plug.  
Tools Required  
D 3 mm allen wrench  
D Needlenose pliers  
D Retaining ring removal tool  
D O-ring pick  
6. Clean all parts and inspect for wear or damage.  
Replace parts as needed.  
Orient “POM” marking on air  
valve plate as shown in  
1
Disassembly  
relation to fluid outlet arrow.  
NOTE: Air Valve Repair Kit 245066 is available. Parts  
included in the kit are marked with a dagger, for exam-  
ple (8{). Use all the parts in the kit for the best results.  
1
1. Remove the side cover (31) and felt dampener  
(29).  
“POM”  
marking  
2. Remove the four screws (36), air valve cover (17),  
and gasket (16). See Fig. 7.  
3. See Fig. 6. Note the orientation of the air valve  
plate (13) relative to the fluid outlet arrow, with  
“POM” marking up. Pull the plate out of the center  
housing (1). Remove the three o-rings (14, 15) and  
the two o–rings (43) from the plate. See Fig. 7.  
fluid outlet  
arrow  
1
13{  
ti15226a  
4. Remove the air valve cup (12) from the center  
housing (1).  
Fig. 6  
18  
309303  
 
Service  
5. Lubricate the large o-ring (15{) and the two small  
Air Valve Repair (continued)  
o-rings (14{) and install them on the air valve plate  
(13{). Align the point on the plate with the arrow  
on the center housing (1) as shown in Fig. 6.  
Install the plate in the housing.  
Reassembly  
1. Lubricate the o-rings (8{) and install them on the  
carriage (7). Slide the carriage into the center  
housing (1) so the notch faces out, as shown in  
Fig. 7.  
6. Install the gasket (16{). Note the orientation.  
2. Lubricate each o-ring (10{) and install them on the  
plugs (9). Insert a plug in each side to secure the  
carriage (7). Install the retaining rings (11) to hold  
these parts in place.  
7. Reinstall the air valve cover (17) and screws (36).  
Torque the screws to 28 in-lb (3.1 NSm).  
8. Replace the ball check seals (24{) with the new  
3. Install the air valve cup (12{) in the notch of the  
seals in the kit.  
carriage (7) so the open side faces out.  
4. Install two o–rings (43) in the counterbore of the air  
motor.  
9. Reinstall the felt dampener (29) and side cover  
(31). See page 14.  
Lubricate  
2
10{ 2  
28 in-lb (3.1 NSm)  
4
5
9
11  
Align. See Fig. 6.  
1
7
12{  
{
8
14{  
2
2
15{  
2
13{ 5  
{
8
2
16{  
29  
17  
31  
4
36  
4
39  
10{ 2  
43  
9
11  
ti1044d  
Fig. 7  
309303  
19  
 
Service  
7. If you could not remove one diaphragm from the  
Shaft Repair  
shaft, place the shaft in a vise with soft jaws.  
Unscrew the remaining diaphragm (6) from the  
shaft (5) by hand.  
Tools Required  
D Needlenose pliers  
D O-ring pick  
8. Clean all parts and inspect for wear or damage.  
Replace parts as needed.  
D Retaining ring removal tool  
D Vise with soft jaws  
Disassembly  
Reassembly  
NOTE: Shaft Repair Kit 24A155 is available. Parts  
included in the kit are marked with a star, for example  
(5l ). Use all the parts in the kit for the best results.  
1. Screw one diaphragm (6) into the shaft (5l )  
handtight.  
NOTE: Shaft and Bearing Repair Kit is available. Parts  
included in the kit are marked with a symbol, for exam-  
ple (44l ). Use all the parts in the kit for the best  
results.  
2. Lubricate the o–rings (45, 46) and install on the  
bearings (44). Install the bearings in the center  
housing (1) and secure with the retaining rings  
(47).  
1. Remove the fluid covers. See page 14. Remove  
the side cover (31) and felt dampener (29).  
3. Place the valve carriage (3) in the center housing  
(1). Grease the shaft (5l ) and slide it through the  
center housing and valve carriage.  
2. Disassemble the air valve. See page 18.  
3. Remove the diaphragms (6). See page 17.  
4. Install the retaining rings (4l ) on the shaft (5l ).  
4. Remove the retaining rings (4l ) from the shaft (5).  
See Fig. 8.  
5. Screw the second diaphragm (6) into the shaft  
(5l ) handtight.  
5. Slide the shaft (5) out of the center housing (1).  
Remove the valve carriage (3) from the housing.  
6. Reassemble the air valve and carriage (see page  
18), using the new o-rings (8l , 10l , 14l , 15l )  
and gasket (16l ) included in the shaft repair kit.  
6. Remove the retaining rings (47) and bearings (44).  
Remove the o–rings (45, 46) from the bearings.  
7. Replace the ball check seals (24l ) with the new  
CAUTION  
seals in the kit.  
Do not grip the shaft with tools that can scratch or  
damage the shaft, such as wrenches or pliers.  
8. Reinstall the fluid covers. See page 14.  
20  
309303  
 
Service  
Shaft Repair (continued)  
38  
32  
1
3
10 ft-lb (13.6 NSm).  
1
Lubricate.  
2
3
4
6
Align.  
28 in-lb (3.1 NSm).  
g
l
4
7
44g  
l
Align. See Fig. 6.  
5
g
l
4
6
2
45g  
l
2
l
5
2
24{  
l
{
l
2
4
3
1
3
l
8
2
4l  
l
8
7
12{  
2
l 10  
9
14{  
2
2
15{  
2
13  
5
45g  
l
4
36  
16{  
g
l
4
6
2
17  
2
11  
l
2
4
29  
24{  
l
44g  
l
31  
39  
g
l
4
7
43  
4
6
3
32  
38  
1
ti1035E  
Fig. 8  
309303  
21  
 
Parts  
Part No. 233500 Aluminum Pump, Series D, npt threads  
Part No. 233501 Stainless Steel Pump, Series C, npt threads (Shown)  
Part No. 233776 Aluminum Pump, Series C, BSPP threads  
Part No. 233777 Stainless Steel Pump, Series C, BSPP threads  
38  
32  
Detail of Grounding Screw  
*6  
24*{  
}
l
30  
33  
40Y  
27}  
35  
37  
20  
19  
21  
}
5
l
g
l
4
7
26  
}
44g  
l
25}  
z
46g l  
ti1030b  
g
l
4
5
1
18  
3
28  
4l  
7
12{  
14  
{
l
{
l
8
15  
{
l
{
l
1
0
13{  
45  
g
l
9
16{  
l
g
l
4
6
11  
44g  
l
17  
g
l
4
7
36  
}22  
}27  
43{  
l
}21  
}23  
29  
31  
*{  
}
l
2
4
6*  
32  
39  
ti1036F  
22  
309303  
 
Parts  
NOTE: Purchase items 36–39 locally.  
Ref.  
No.  
Ref.  
No.  
Part No. Description  
Qty.  
Part No. Description  
Qty.  
1
15J732  
198894  
HOUSING, center;  
for Part No. 233500; aluminum  
HOUSING, center;  
for Part No. 233501;  
stainless steel  
HOUSING, center;  
for Part No. 233776; aluminum  
HOUSING, center;  
for Part No. 233777;  
stainless steel  
CARRIAGE, valve  
RING, retaining, shaft  
SHAFT, diaphragm  
DIAPHRAGM; PTFE  
composite  
32  
197674  
COVER, housing;  
for Part Nos. 233500 and 233776;  
aluminum  
COVER, housing;  
for Part Nos. 233501 and 233777;  
stainless steel  
FITTING, air inlet; for Part Nos.  
233500 and 233501  
FITTING, air inlet; for Part Nos.  
233776 and 233777  
SCREW, grounding; M5 x 10  
SCREW, cap, socket-hd;  
M4 x 20  
SCREW, cap, socket-hd;  
M4 x 12  
SCREW, cap, socket-hd;  
M8 x 18; for Part Nos.  
233500 and 233776  
SCREW, same as above; for  
Part Nos. 233501 and 233777 12  
SCREW, button-hd; M4 x 12  
LABEL, warning  
O–RING  
1
2
197680  
1
1
198892  
197679  
2
33  
198832  
198831  
1
1
1
2
1
1
1
3
197645  
197646  
n/a  
35  
36  
116343  
116474  
4l  
5l  
4
2
6*  
7
197648  
37  
38  
116475  
117367  
2
1
2
2
2
2
1
1
2
1
1
1
1
1
1
4
2
197649  
197650  
197651  
197652  
197653  
197654  
197655  
197656  
197657  
197658  
197659  
197660  
197661  
197662  
197663  
197664  
197665  
CARRIAGE  
O-RING, carriage  
PLUG, carriage  
O-RING, plug  
RING, retaining, carriage  
CUP, valve, air  
8{  
l
9
12  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
{
l
15D128  
{
{
{
{
{
39  
116595  
188621  
157628  
n/a  
n/a  
n/a  
2
1
2
2
2
2
2
PLATE, valve, air  
O-RING, valve, air  
O-RING, valve, air  
GASKET, valve, air  
COVER, valve, air  
VALVE, safety, air  
PLATE, dampener; neoprene  
DAMPENER; steel  
BALL; acetal  
SEAL, valve, outlet; acetal  
SEAT, valve, outlet;  
stainless steel  
SEAL, ball check; nylon  
O-RING, valve, inlet;  
fluoroelastomer  
40  
43  
44  
45  
46  
47  
Y
{
l
l
l
l
l
l
l
l
BEARING  
O–RING, nitrile  
O–RING, nitrile  
RING, retaining  
n/a  
*
These parts are only available by purchasing Dia-  
phragm Repair Kit 245065.  
}
}
}
{
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A
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Valve Repair Kit 245066.  
2
4
24*  
25  
{
}
l
1
9
7
6
6
6
}
T
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z
197667  
Check Repair Kit 245067.  
2
l
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e
p
a
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t
s
a
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o
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l
y
a
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26  
}
}
197668  
SEAT, valve, inlet;  
stainless steel  
and Bearing Repair Kit 24A155.  
2
4
1
1
1
1
27  
28  
29  
30  
31  
197669  
197670  
197671  
16A659  
16A661  
GUIDE, ball; acetal  
DAMPENER, felt, air inlet side  
DAMPENER, felt, side  
COVER, air inlet side  
COVER, side  
Y
R
e
p
l
a
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m
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D
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W
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n
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g
l
a
b
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l
s
,
t
a
g
s
a
n
d
cards are available at no cost.  
z
T
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i
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p
a
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t
a
v
a
i
l
a
b
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e
i
n
1
0
p
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1
5
D
5
6
4
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B
a
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Check Repair kit 245067  
309303  
23  
 
Technical Data  
Category  
Data  
Maximum fluid working  
pressure  
115 psi (0.8 MPa, 8.0 bar)  
Air pressure operating range  
Ratio  
12 to 115 psi (.08 to 0.8 MPa, 0.8 to 8.0 bar)  
1:1  
Maximum free flow delivery  
8.5 gal./min (32 l/min)  
Operating fluid temperature  
range  
50 to 176_ C (10 to 80_ C)  
Maximum suction lift  
Weight  
16 ft (4.8 m) dry; 22 ft (6.5 m) wet  
Part Nos. 233500, 233776: 9 lb (4 kg)  
Part Nos. 233501, 233777: 14 lb (6.4 kg)  
Wetted parts  
Part Nos. 233500, 233776: Aluminum, Stainless Steel, Acetal, Nylon, PTFE,  
fluoroelastomer  
Part Nos. 233501, 233777: Stainless Steel, Acetal, Nylon, PTFE, fluoroelastomer  
Sound Pressure Levels in dB(A)*  
(measured at 1 m from unit)  
Sound Power Levels in dB(A)*  
(tested in accordance with ISO 3744)  
Input Air Pressures  
40 psi (0.28 MPa, 2.8 bar)  
60 psi (0.42 MPa, 4.2 bar)  
Sound Pressure  
Input Air Pressures  
40 psi (0.28 MPa, 2.8 bar)  
60 psi (0.42 MPa, 4.2 bar)  
Sound Power  
69.1  
72.1  
80.8  
83.7  
Performance Chart  
To find Fluid Outlet Pressure (psi/MPa/bar) at a specific fluid flow  
(lpm/gpm) and operating air pressure (psi/MPa/bar):  
To find Pump Air Consumption (l/min or scfm) at a specific fluid flow  
(lpm/gpm) and air pressure (psi/MPa/bar):  
1. Locate desired flow along bottom of chart.  
1. Locate desired flow along bottom of chart.  
2. Follow vertical line up to intersection with selected fluid outlet  
pressure curve (black). Follow left to scale to read fluid outlet  
pressure.  
2. Read vertical line up to intersection with selected air consumption  
curve (dashes). Follow left to scale to read air consumption.  
A
B
C
D
115 psi (0.8 MPa, 8 bar) air pressure  
90 psi (0.6 MPa, 6 bar) air pressure  
60 psi (0.4 MPa, 4 bar) air pressure  
30 psi (0.2 MPa, 2 bar) air pressure  
Test Fluid: No. 10 Weight Oil  
Fluid Outlet Pressure  
Air Consumption  
psi  
scfm  
cycles per minute  
cycles per minute  
47 71 94 118 141 165 188  
MPa, bar  
l/min  
24  
47 71  
94 118 141 165 188  
24  
8
7
6
5
4
3
2
1
0
120  
224  
196  
168  
140  
112  
84  
A
B
0.8, 8.0  
A
B
C
100  
0.7, 7.0  
80  
0.6, 6.0  
60  
C
D
0.4, 4.0  
40  
0.3, 3.0  
20  
56  
D
28  
0.14, 1.4  
0
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
gpm  
l/min  
gpm  
l/min  
3.8 7.6 11.4 15.2 19.0 22.8 26.6 30.4  
3.8 7.6 11.4 15.2 19.0 22.8 26.6 30.4  
24  
309303  
 
Dimensions  
BOTTOM VIEW  
4.53 in.  
(115 mm)  
3/8 npt or 3/8 BSPP Fluid Outlet  
Two 0.35 in. (9 mm) diameter  
holes, for mounting pump  
1/4 npt or 1/4 BSPP Air Inlet  
3/4 npt or M26 x 1.5  
Fluid Inlet  
4.1 in.  
(104 mm)  
SIDE VIEW  
Aluminum  
SIDE VIEW  
SST  
4.88 in.  
(124 mm)  
9.1 in.  
(231.5 mm)  
8.2 in.  
(208 mm)  
ti1037a  
TI3265A  
309303  
25  
 
Graco Standard Warranty  
Graco warrants all equipment 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 sub-  
stitution 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 reconnais-  
sent 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 procedures concernées.  
Graco Information  
TO PLACE AN ORDER, contact your Graco distributor, or call one of these numbers  
to identify the distributor closest to you:  
1–800–328–0211 Toll Free  
612–623–6921  
612–378–3505 Fax  
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 309303  
Graco Headquarters: Minneapolis  
International Offices: Belgium, China, Japan, Korea  
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441  
Copyright 2001, Graco Inc. is registered to ISO 9001  
Revised 02/2011  
26  
309303  
 

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