Graco Series A Operation manual

307–917
Rev. K
Supersedes G
and PCN J
Model 224-522
Basic Pump
INSTRUCTIONS-PARTS LIST
INSTRUCTIONS
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
SEVERE-DUTY, STAINLESS STEEL
10:1 Ratio Standard Pump
PAIL, WALL, AND CART MOUNT SYSTEMS
66 bar, 6.6 MPa (950 psi) MAXIMUM WORKING PRESSURE
Model 224-522, Series A
Basic Pump
* Model 222-390, Series B
Pail Mount System
Includes pump, pail mount kit, air/fluid regulator kit,
hose kit, air-assisted airless spray gun, and tip
Model 222-393, Series B
Wall Mount System
Includes pump, wall mount kit, air/fluid regulator
kit,hose kit, air-assisted airless spray gun, and tip
Refer to page 2 for Table of Contents.
* Model 222–390 is CE certified.
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
ECOPYRIGHT 1988, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001

2307–917
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensional Drawing 25. . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Chart 26. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Toll-Free Phone Number 28. . . . . . . . . . . . . . . . .
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 not sure, call your Graco distributor.
DDo not alter or modify this equipment.
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 27 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.
DDo not use hoses to pull equipment.
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.

3307-917
WARNING
INJECTION HAZARD
Spray from the gun, 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 medi-
cal attention.
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 9 if the spray tip clogs and before cleaning,
checking or servicing the equipment.
DTighten all fluid connections before operating the equipment.
DCheck the hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
Do not repair high pressure couplings; you must replace the entire hose.
DUse only Graco approved hoses. Do not remove the 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 can pinch or amputate your fingers.
DKeep clear of all moving parts when starting or operating the pump.
DBefore servicing the equipment, follow the Pressure Relief Procedure on page 9 to prevent the
equipment from starting unexpectedly.

4307–917
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 5.
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.

5307-917
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. If you
supply your own accessories, be sure they are ade-
quately sized and pressure rated for your system.
Figures 2 and 3 are only examples for selecting and
installing system components and accessories. Con-
tact 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.
Prepare the Site
The pump requires 3.5 scfm (0.1 m#/min) of com-
pressed air while operating at 6.7 bar, 0.67 MPa (95
psi) air pressure and 60 cycles per minute. Ensure that
you have an adequate compressed air supply.
Refer to Figures 2 and 3. Bring a compressed air
supply line (E) from the air compressor to the pump
location. Be sure all air hoses are properly sized and
pressure-rated for your system. Use only electrically
conductive hoses.
Install a bleed-type shutoff valve (K) in the air line to
isolate the air line components for servicing. Install an
air line moisture trap and drain valve (J) to help re-
move moisture 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 or draining the fluid filter.
Grounding
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE OR EXPLOSION
HAZARD on page 4.
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
(Y) into the slot in lug (Z) and tighten the locknut
securely. Connect the other end of the wire to a
true earth ground.
Fig. 1 0515
Z
X
W
Y
2. Air and fluid hoses: use only electrically conductive
hoses.
3. Air compressor: follow manufacturer’s recommen-
dations.
4. Spray gun: ground through connection to a prop-
erly grounded fluid hose and pump.
5. Fluid supply container: follow your local code.
6. Object being sprayed: follow your local code.
7. 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.
8. 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.

6307–917
Setup
Supplied Components
Refer to Figs. 2 and 3.
WARNING
A red-handled bleed-type master air valve (F) and
a fluid drain valve (G) are required, to help reduce
the risk of serious injury, including 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 air is
shut off. 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 (F)
is required in your system to relieve air trapped
between it and the air motor when the valve is
closed (see the WARNING above). Be sure the
bleed valve is easily accessible from the pump, and
is located downstream from the pump air regulator
(B).
DThe pump air regulator (B) controls pump speed
and outlet pressure by adjusting the air pressure to
the pump. Locate close to the pump, but upstream
from the bleed-type master air valve (F).
DThe pre-set safety valve (506) prevents overpres-
surization of the spray gun by opening automatical-
ly if the incoming air pressure to the pump exceeds
6.6 bar, 0.66 MPa (95 psi).
DThe gun air regulator (C) controls the air pressure
to the spray gun (H).
DThe air line fitting (502) and coupler (503),
connect the main air line to the air/fluid regulator.
Disconnect the coupler from the pin fitting and
screw it onto the end of your air supply hose. Do
not reconnect the coupler to the pin fitting at this
time.
Wall Mount System Setup (See Fig. 3)
Install the bung adapter plate (306) on the wall
bracket, using the two hex screws (303) and nuts
(304).
Mount the wall bracket (305) 1.5 m (5 ft) above the
floor. Refer to wall bracket manual 306-783 for instruc-
tions. Be sure the wall is strong enough to support the
weight of the equipment, fluid, and hoses, and with-
stand the stress caused during pump operation.
Remove the bung adapter (18) from the pump and
screw it tightly into the bung adapter plate (306). Lower
the pump (A) through the bung adapter. Tighten the
screw on the bung adapter to hold the pump steady.
Apply thread sealant and screw the suction tube
assembly (307) into the pump’s fluid intake valve.
Setup Procedure for all Models (Refer to
Figs. 2 or 3, as applicable)
System Accessories
Install an air line filter (D) in the main air line (E), to
remove harmful dirt and moisture from the compressor
air supplied to the pump and gun.
Near the pump’s fluid outlet, install a tee and drain
valve (G).
Hose and Gun Connections
The Hose Kit consists of the spray gun’s air and fluid
supply hoses. The fluid hose (401) has spring guards
on both ends, and includes an in-line fluid filter (402) at
the gun end. The hoses are tied together for ease of
movement.
Connect the male end of the air hose (403) to the 1/4
npsm(f) swivel adapter (509) at the outlet of the gun air
regulator (C), and connect the female end to the air
inlet in the spray gun (H) handle.
Connect the male end of the fluid hose (401) to the
pump’s fluid outlet, and connect the female end to the
gun’s fluid inlet. Do not install the spray tip in the gun
at this time.

7307-917
Setup
Fig. 2
Typical Setup: Pail Mount System
KEY
APump
BPumpAirRegulator
CGunAirRegulator
DAirLineFilter
EMainAirLine
FRedHandledBleed-Type Air Valve(Required)
GDrain Valve(Required)
HSprayGun
JAir Line Drain Valve
KBleed-Type Master Air Valve (for accessories)
YGround Wire ( See page 5 for installation)
18 BungAdapter
114 Wet-Cup
203 Hex Screws
204 Pail
205 BungAdapterPlate
206 PailCover
207 Thumbscrews
401 FluidHose
402 FluidFilter
403 Gun Air Hose
502 AirLineFitting
503 AirLineCoupler
506 Safety Valve
509 SwivelAdapter
A
18
204
205
206
401
403
503
506
402
F
(SHOWN
OPENED)
E
D
H
B
C
207
509
0516A
502
G
(SHOWN
CLOSED)
203
114
Y
K
J

8307–917
Setup
Fig. 3 0517A
Typical Setup: Wall Mount Systems
KEY
APump
BPumpAirRegulator
CGunAirRegulator
DAirLineFilter
EMainAirLine
FRedHandledBleed–Type Air Valve
(Required)
GDrain Valve(Required)
HSprayGun
JAir Line Drain Valve
KBleed-Type Master Air Valve
(for Accessories)
YGroundWire(Required,
see page 5 for installation)
18 BungAdapter
114 Wet-Cup
303 Hex Screws
305 Wall Bracket
306 BungAdapterPlate
307 SuctionTube
401 FluidHose
402 FluidFilter
403 Gun Air Hose
502 AirLineFitting
503 AirLineCoupler
506 Safety Valve
509 SwivelAdapter
A
18
305
306
307
401
403
503
506
402
H
E
D
B
C
509
303
114 502
(SHOWN
OPENED)
G
(SHOWN
CLOSED)
Y
F
K
J

9307-917
Operation
Pressure Relief Procedure
WARNING
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 tips.
1. Lock the gun trigger safety.
2. Close the red-handled bleed-type master air valve
(F, required in your system).
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 (G, 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.
8. If you suspect that the spray tip or hose is com-
pletely 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/Wet-Cup
Keep the packing nut/wet-cup (114) filled with Graco
Throat Seal Liquid (TSL) to help prolong the packing
life.
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
tighten the nut just tight enough to prevent leakage –
no tighter. Do this weekly. 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 10.
Using the Air–Assisted Airless Spray Gun
Before operating the equipment, read the instruction
manual supplied with the gun.
Use the gun air regulator (C) to control the air pressure
to the gun.
Adjust the air presssure to the pump to control the fluid
pressure at the gun. For more precise fluid pressure
control, install a fluid regulator.
Spray some test patterns before doing any finished
work. Refer to the gun manual for detailed information
on correct spraying technique.

10 307–917
Operation
Starting and Adjusting the Pump
Be sure the two air regulators (B and C) and the
bleed–type master air valve (F) are closed. DO NOT
INSTALL THE SPRAYER TIP!
Connect the air line coupler (503) to the pin fitting
(502).
Open the gun air regulator (C). Hold a metal part of the
spray gun (H) firmly to the side of a grounded metal
pail and trigger the gun. Open the bleed-type master
air valve (F) and slowly open the pump air regulator
(B) until the pump starts. Allow the pump to cycle
slowly until all the air is pushed out of the fluid
lines. Release the gun trigger and engage the safety
latch; the pump will stall against the pressure.
With the pump and lines primed, and with adequate air
pressure and volume supplied, the pump will start and
stop as the spray gun is triggered and released.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 9.
Relieve the pressure, then install the spray tip in the
gun.
Use the pump air regulator (B) to control the pump
speed and fluid pressure. Always use the lowest
pressure necessary to achieve the desired results.
Higher pressures waste fluid and cause premature
wear of the pump packings and spray tip.
CAUTION
Do not allow the pump to run dry. It will quickly
accelerate to a high speed, causing damage. If your
pump is running too fast, stop it immediately and
check the fluid supply. If the container is empty and
air has been pumped into the lines, refill the con-
tainer and prime the pump and the lines, or flush and
leave it filled with a compatible solvent. Eliminate all
air from the fluid system.
Shutdown and Care of the Pump
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 9.
For overnight shutdown, stop the pump at the bottom
of its stroke to prevent fluid from drying on the ex-
posed displacement rod and damaging the throat
packings. Relieve the pressure.
Always flush the pump before the fluid dries on the
displacement rod. See Flushing below.
Flushing
WARNING
FIRE AND EXPLOSION HAZARD
Before flushing, read the section FIRE
OR EXPLOSION HAZARD on page 4.
Be sure the entire system and flushing
pails are properly grounded. Refer to
Grounding on page 5.
Flush the pump:
DBefore the first use
DWhen changing colors or fluids
DBefore fluid can dry or settle out in a dormant pump
(check the pot life of catalyzed fluids)
DBefore storing the pump.
Flush with a fluid that is compatible with the fluid you
are pumping and with the wetted parts in your system.
Check with your fluid manufacturer or supplier for
recommended flushing fluids and flushing frequency.