Graco 232437 Operation manual

Instructions – Parts List
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
Copyright 1999, Graco Inc. is registered to I.S. EN ISO 9001
Pail Mount
Airless Packages 308765F
Model 232437 Shown
8109C
0359 II 1/2 G T3
ITS03ATEX11251
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
See page 2 for table of contents.

2 308765
Table of Contents
List of Models 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Warranty 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Information 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Models
Package
Part No. Series Pump Model Ratio Maximum Fluid Working Pressure Maximum Air Input Pressure
232433 AMonarkr, carbon steel,
with hose and gun,
without agitator
23:1 2300 psi (16 MPa, 160 bar) 100 psi (0.7 MPa, 7 bar)
232434 AMonarkr, carbon steel,
without agitator, hose,
and gun
23:1 2300 psi (16 MPa, 160 bar) 100 psi (0.7 MPa, 7 bar)
232437 AMonarkr, carbon steel,
with agitator, hose,
and gun
23:1 2300 psi (16 MPa, 160 bar) 100 psi (0.7 MPa, 7 bar)
232445 AMonarkr, stainless steel,
with hose and gun,
without agitator
23:1 2300 psi (16 MPa, 160 bar) 100 psi (0.7 MPa, 7 bar)
232446 AMonarkr, stainless steel,
without agitator, hose,
and gun
23:1 2300 psi (16 MPa, 160 bar) 100 psi (0.7 MPa, 7 bar)
232449 AMonarkr, stainless steel,
with agitator, hose,
and gun
23:1 2300 psi (16 MPa, 160 bar) 100 psi (0.7 MPa, 7 bar)

308765 3
Symbols
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
WARNING
INSTRUCTIONS
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
DThis equipment is for professional use only.
DRead all instruction manuals, tags, and labels before operating the equipment.
DUse the equipment only for its intended purpose. If you are uncertain about usage, call your Graco
distributor.
DDo not alter or modify this equipment. Use only genuine Graco parts and accessories.
DCheck equipment daily. Repair or replace worn or damaged parts immediately.
DDo not exceed the maximum working pressure of the lowest rated system component. Refer to the
Technical Data on page 18 for the maximum working pressure of this equipment.
DUse 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.
DRoute 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).
DWear hearing protection when operating this equipment.
DDo not lift pressurized equipment.
DComply with all applicable local, state, and national fire, electrical, and safety regulations.

4 308765
WARNING
SKIN INJECTION HAZARD
Spray from the gun, hose leaks, or ruptured components can inject fluid into your body and cause
extremely serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin
can also cause serious injury.
DFluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate surgi-
cal treatment.
DDo not point the gun at anyone or at any part of the body.
DDo not put your hand or fingers over the spray tip.
DDo not stop or deflect leaks with your hand, body, glove or rag.
DDo not “blow back” fluid; this is not an air spray system.
DAlways have the tip guard and the trigger guard on the gun when spraying.
DCheck the gun diffuser operation weekly. Refer to the gun manual.
DBe sure the gun trigger safety operates before spraying.
DLock the gun trigger safety when you stop spraying.
DFollow the Pressure Relief Procedure on page 10 whenever you: are instructed to relieve pres-
sure; stop spraying; clean, check, or service the equipment; and install or clean the spray tip.
DTighten all fluid connections before operating the equipment.
DCheck the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.
Permanently coupled hoses cannot be repaired; replace the entire hose.
DUse only Graco approved hoses. Do not remove any spring guard that is used to help protect the
hose from rupture caused by kinks or bends near the couplings.
MOVING PARTS HAZARD
Moving parts, such as the air motor piston and agitator blades, can pinch or amputate your fingers.
DKeep clear of all moving parts when starting or operating the pump.
DAlways shut off the agitator and disconnect the air line before you remove the agitator from the pail
or check or repair any part of the agitator.
DBefore servicing the equipment, follow the Pressure Relief Procedure on page 10 to prevent the
equipment from starting unexpectedly.

308765 5
WARNING
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and
result in a fire or explosion and serious injury.
DGround the equipment and the object being sprayed. Refer to Grounding on page 7.
DIf there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing immediately. Do not use the equipment until you identify and correct the problem.
DProvide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being sprayed.
DKeep the spray area free of debris, including solvent, rags, and gasoline.
DElectrically disconnect all equipment in the spray area.
DExtinguish all open flames or pilot lights in the spray area.
DDo not smoke in the spray area.
DDo not turn on or off any light switch in the spray area while operating or if fumes are present.
DDo not operate a gasoline engine in the spray area.
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,
inhaled, or swallowed.
DKnow the specific hazards of the fluid you are using.
DStore hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
DAlways wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.

6 308765
Setup
General Information
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and the
parts drawing.
NOTE: Always use Genuine Graco Parts and Acces-
sories, available from your Graco distributor. Refer to
Product Data Sheet 305900. If you supply your own
accessories, be sure they are adequately sized and
pressure-rated for your system.
Fig. 2 is only a guide for selecting and installing sys-
tem components and accessories. Contact your Graco
distributor for assistance in designing a system to suit
your particular needs.
Prepare the Operator
All persons who operate the equipment must be
trained in the safe, efficient operation of all system
components as well as the proper handling of all fluids.
All operators must thoroughly read all instruction
manuals, tags, and labels before operating the equip-
ment.
The following manuals are included with this equip-
ment:
D308765, Pail Mount Airless Packages
D307619, Monark 23:1 CST and SST Pumps
D307043, Monark Air Motor
D308686, Air Regulator Kit
D307273, Fluid Filter
D306565, Agitator (Models 232437
and 232449 only)
D311254, Airless Spray Gun
Prepare the Site
Ensure that you have an adequate compressed air
supply. Refer to the performance charts on page 18 to
find the air consumption of your pump.
Refer to Fig. 2 on page 9. Bring a compressed air
supply line from the air compressor to the pump loca-
tion. Be sure all air hoses are properly sized and
pressure-rated for your system. Use only electrically
conductive hoses. The air hose (A) should have a 3/8
npsm(m) thread.
Install a bleed-type shutoff valve (B) in the air line to
isolate the air line components for servicing. Install an
air line filter (C) and a moisture trap and drain valve
(D) to help remove moisture and contaminants from
the compressed air supply.
Keep the site clear of any obstacles or debris that
could interfere with the operator’s movement.
Have a grounded, metal pail available for use when
flushing the system.

308765 7
Setup
Grounding
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE AND EXPLOSION
HAZARD on page 5.
1. Pump: use the ground wire and clamp (supplied).
See Fig. 1. Loosen the grounding lug locknut (W)
and washer (X). Insert one end of the ground wire
(18) into the slot in lug (Z) and tighten the locknut
securely. Connect the other end of the wire to a
true earth ground.
2. Agitator (Models 232437 and 232449 only): one
end of the agitator ground wire (40, supplied) is
fastened to the agitator motor with a screw. Insert
the other end of the ground wire into the slot in lug
(Z). Insert the pump ground wire (18) as described
in step 1 and tighten the locknut (W) securely.
8238A
W
18
X
Z
40
Fig. 1
1Models with agitator only.
1
3. Air and fluid hoses: use only electrically conductive
hoses.
4. Air compressor: follow manufacturer’s recommen-
dations.
5. Spray gun: ground through connection to a prop-
erly grounded fluid hose and pump.
6. Fluid supply container: follow your local code.
7. Object being sprayed: follow your local code.
8. Solvent pails used when flushing: follow your local
code. Use only metal pails, which are conductive,
placed on a grounded surface. Do not place the
pail on a nonconductive surface, such as paper or
cardboard, which interrupts the grounding continu-
ity.
9. To maintain grounding continuity when flushing or
relieving pressure, hold a metal part of the spray
gun firmly to the side of a grounded metal pail,
then trigger the gun.

8 308765
Setup
Supplied Components
Refer to Fig. 2.
WARNING
A red-handled bleed-type master air valve (E) and
a fluid drain valve (F) are supplied. These compo-
nents help reduce the risk of serious injury, includ-
ing fluid injection and splashing of fluid in the eyes
or on the skin, and injury from moving parts if you
are adjusting or repairing the pump.
The bleed-type master air valve relieves air trapped
between this valve and the pump after the valve is
closed. Trapped air can cause the pump to cycle
unexpectedly. Locate the valve close to the pump.
The fluid drain valve assists in relieving fluid pres-
sure in the displacement pump, hose, and gun.
Triggering the gun to relieve pressure may not be
sufficient.
DThe red-handled bleed-type master air valve (E)
is required in your system to relieve air trapped
between it and the air motor and gun when the
valve is closed (see the WARNING above). Do not
block access to the valve.
DThe pump air regulator (G) controls pump speed
and outlet pressure by adjusting the air pressure to
the pump.
DThe air relief valve (15) opens automatically to
prevent overpressurization of the pump.
DThe air inlet swivel (H) connects incoming air to
the pump.
DThe strainer (42) keeps large particles from enter-
ing the pump.
DThe fluid filter (13) includes a 60 mesh (250
micron) stainless steel element to filter particles
from the fluid as it leaves the pump. It also includes
the fluid drain valve (F), which is required in your
system to relieve fluid pressure in the hose and gun
(see the WARNING at left).
DThe agitator (39), included on Models 232437 and
232449 only, keeps the fluid in suspension.
DThe airless spray gun (106) dispenses the fluid.
The gun houses the spray tip (107), which is
available in a wide range of sizes for different spray
patterns and rates of flow.
DThe fluid hose (101) and whip hose (103) supply
fluid to the gun.
DThe gun swivel (104) allows greater gun maneu-
verability. The swivel includes an in-line filter.

308765 9
Setup
8108C
KEY
SUPPLIED COMPONENTS
1 5 Gallon (19 liter) Pail Cover
2 Pump
13 Fluid Filter
(includes fluid drain valve F)
15 Air Relief Valve
18 Pump Ground Wire (required;
see page 7 for installation instructions)
19 5 Gallon (19 liter) Pail
39 Agitator
40 Agitator Ground Wire
101 Electrically Conductive Fluid Hose
103 Fluid Whip Hose
104 Gun Filter/Swivel
106 Airless Spray Gun
E* Red-Handled Bleed-Type
Master Air Valve (required, for pump)
F Fluid Drain Valve
G* Pump Air Regulator
H* Air Inlet Swivel
* Included in Air Regulation Kit (21).
COMPONENTS YOU MUST SUPPLY
A Electrically Conductive Air Supply Hose
B Bleed-Type Master Air Valve
(for accessories)
C Air Line Filter
D Air Line Moisture Trap and Drain Valve
Fig. 2
1
106
104
101
13
103
D
F
A
19
C
H*
B
15
Model 232437 Shown
2
E*
*G
18
40
39

10 308765
Operation
Pressure Relief Procedure
WARNING
SKIN INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected through the
skin and cause serious injury. To reduce the risk of
an injury from injection, splashing fluid, or moving
parts, follow the Pressure Relief Procedure
whenever you:
Dare instructed to relieve the pressure,
Dstop spraying,
Dcheck or service any of the system equipment,
Dor install or clean the spray tip.
1. Lock the gun trigger safety.
2. Close the red-handled bleed-type master air valve
(E, required in your system). See Fig. 3 on page
13.
3. Unlock the gun trigger safety.
4. Hold a metal part of the gun firmly to the side of a
grounded metal pail, and trigger the gun to relieve
pressure.
5. Lock the gun trigger safety.
6. Open the drain valve (F, required in your system),
having a container ready to catch the drainage.
7. Leave the drain valve open until you are ready to
spray again.
If you suspect that the spray tip or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above, very slowly loosen the
tip guard retaining nut or hose end coupling and relieve
pressure gradually, then loosen completely. Now clear
the tip or hose.
Packing Nut
Before starting, fill the packing nut 1/3 full with Graco
Throat Seal Liquid (TSL) or compatible solvent. See
your separate pump manual.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure at left.
The packing nut is torqued at the factory and is ready
for operation. If it becomes loose and there is leaking
from the throat packings, relieve pressure, then torque
the nut as specified in your separate pump manual. Do
this whenever necessary. Do not overtighten the
packing nut.
Flush the Pump Before First Use
The pump is tested with lightweight oil, which is left in
to protect the pump parts. If the fluid you are using
may be contaminated by the oil, flush it out with a
compatible solvent. See Flushing on page 14.