Graco Series A Operation manual

Instructions – Parts List
GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441
Copyright 2002, Graco Inc. is registered to I.S. EN ISO 9001
SEVERE DUTY
15:1 Ratio PresidentR
Pump
1800 psi (12 MPa, 124 bar) Maximum Fluid Working Pressure
120 psi (0.8 MPa, 8.4 bar) Maximum Air Input Pressure
Part 217580, Series A **
15:1 Ratio President Pump, includes
Part 217529, Series D
Severe Duty Displacement Pump*
Part 287886, Series A **
15:1 Ratio President Pump, includes
Part 215930, Series E
PTFE Packed Displacement Pump
*Severe-Duty Displacement Pumps have an abrasion and
corrosion-resistant displacement rod and sleeve.
Refer to Technical Data on page 22 for Wetted Parts information.
** This model is certified and approved.
Table of Contents
Symbols 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Hole Layout 23. . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Standard Warranty 24. . . . . . . . . . . . . . . . . . . . . .
Graco Information 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
306936N
02113
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.

2306936
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 22 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.

3306936
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 8 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, can pinch or amputate your fingers.
DKeep clear of all moving parts when starting or operating the pump.
DDo not operate the pump with the air motor plates removed.
DBefore servicing the equipment, follow the Pressure Relief Procedure on page 8 to prevent the
equipment from starting unexpectedly.

4306936
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.

5306936
Installation
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and the
parts drawings.
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 to meet the system’s
requirements.
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.
Prepare the Site
Ensure that you have an adequate compressed air
supply. Refer to the performance chart on page 22 to
find the air consumption of your pump.
Mount the pump (V) to suit the type of installation
planned. Fig. 2 shows the pump mounted on a wall
bracket (U). The pump dimensions and mounting hole
layout are shown on page 23.
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.
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 4.
1. Pump: use a ground wire and clamp. See Fig. 1.
Loosen the grounding lug locknut (W) and washer
(X). Insert one end of a 12 ga. (1.5 mm2) minimum
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. For a ground wire and
clamp, order Part No. 237569.
W
Y
X
Z
Fig. 1 0720
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.

6306936
Installation
System Accessories
WARNING
A bleed-type master air valve (B) and a fluid drain
valve (J) are required in your system. These acces-
sories help reduce the risk of serious injury includ-
ing skin injection, splashing in the eyes or on the
skin, and injury from moving parts if you are adjust-
ing 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.
Order Part No. 113269.
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. Order Part No. 210657.
Air and Fluid Hoses
Be sure all air and fluid hoses are properly sized and
pressure-rated for your system. Use only electrically
conductive air and fluid hoses. Use a 1/2 in. (13 mm)
I.D. (minimum) air hose (A) to supply air to the pump.
Connect a fluid hose (P) to the pump’s 1/2 npt(f) fluid
outlet. Connect a fluid suction hose and tube (S) to the
pump’s 3/4 npt(m) fluid intake.
Air Line Accessories
Install the following accessories in the order shown in
Fig. 2, using adapters as necessary:
DA bleed-type master air valve (B) 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 air regulator (C).
DAn air regulator (C) controls pump speed and
outlet pressure by adjusting the air pressure to the
pump. Locate the regulator close to the pump, but
upstream from the bleed-type master air valve (B).
DAn air line lubricator (D) provides automatic air
motor lubrication.
DA pump runaway valve (E) shuts off the pump if it
starts running too fast. A pump which runs too fast
can seriously damage itself.
DAn air line filter (F) removes harmful dirt and
moisture from the compressed air supply. Also,
install a moisture trap and drain valve (H) to help
remove moisture and contaminants from the com-
pressed air supply. Install these accessories on the
pump air supply line and the air supply line to an
air-assisted airless spray gun.
DA second bleed-type air valve (G) isolates the air
line accessories for servicing. Locate upstream
from all other air line accessories.
DAgun air regulator (T) adjusts the air pressure to
the air-assisted airless spray gun (R).
Fluid Line Accessories
Install the following accessories in the positions shown
in Fig. 2, using adapters as necessary:
DA fluid drain valve (J) is required in your system
to relieve fluid pressure in the hose and gun (see
the WARNING at left). Install the drain valve point-
ing down, but so the handle points up when
opened.
DA fluid filter (K) filters harmful particles from the
fluid.
DA fluid shutoff valve (L) shuts off the fluid flow to
the gun.
DA fluid pressure regulator (M) and gauge (N)
allows more precise control of the fluid pressure at
the gun.
DA spray gun (R) dispenses the fluid. The gun
shown in Fig. 2 is an air-assisted airless spray gun.

7306936
Installation
02114
Fig. 2
KEY
AAir Supply Line
BBleed-Type Master Air Valve (required, for pump)
CPump Air Regulator
DAir Line Lubricator
EPump Runaway Valve
FAir Line Filter
GBleed-Type Master Air Valve (for accessories)
HAir Line Drain Valve
JFluid Drain Valve (required)
KFluid Filter
LFluid Line Shutoff Valve
MFluid Pressure Regulator
NFluid Pressure Gauge
PFluid Supply Hose
RAir-Assisted Airless Spray Gun
SFluid Suction Hose and Tube
TGun Air Regulator
UWall Bracket
VPump
YGround Wire (required;
see page 5 for installation instructions)
A
BCD
E
FG
H
FG
J
K
L
M
N
P
R
S
T
U
Y
V
H
A
A

8306936
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 bleed-type master air valve (B, 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 (J, 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/Wet-Cup
Before starting, fill the packing nut (W) 1/2 full with
Graco Throat Seal Liquid (TSL) or compatible solvent.
See Fig. 3.
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 the pressure. Using a
spanner wrench or 1/4 in. (6 mm) diameter rod, tighten
the nut just enough to stop the leakage. Do this when-
ever 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. If the pump is being used to supply
a circulating system, allow the solvent to circulate until
the pump is thoroughly flushed. See Flushing on
page 11.

9306936
Operation
02113
Fig. 3
W
P

10 306936
Operation
WARNING
MOVING PARTS HAZARD
Moving parts can pinch or amputate your
fingers or other body parts. When air is
supplied to the motor, the air motor
piston (located behind the air motor plates) moves.
Therefore, never operate the pump with the air
motor plates (P) removed. See Fig. 3.
Starting and Adjusting the Pump
Begin these steps before you install the spray tip.
1. Ensure that the air regulator (C) and bleed-type
master air valve (B) are closed. See Fig. 2 on
page 7.
2. Connect a suction hose (S) to the pump’s fluid
inlet.
3. Hold a metal part of the spray gun (R) firmly to the
side of a grounded metal pail and hold the trigger
open.
4. Open the pump’s bleed-type master air valve (B).
5. Slowly open the air regulator (C) until the pump
starts (approximately 40 psi [0.28 MPa, 2.8 bar]).
6. Cycle the pump slowly until all the air is pushed
out and the pump and hoses are fully primed.
7. Release the spray gun trigger and lock the trigger
safety. The pump should stall against pressure
when you release the trigger.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
8. Relieve the pressure.
9. Install the spray tip in the gun.
WARNING
COMPONENT RUPTURE HAZARD
To reduce the risk of overpressurizing
your system, which could cause
component rupture and serious injury,
never exceed the specified maximum air input
pressure to the pump (see Technical Data on
page 22).
10. Control the pump speed and fluid pressure with
the air regulator (C). Always use the lowest air
pressure necessary to get the desired results.
Higher pressure causes premature spray tip and
pump wear.
NOTE: For more precise control of fluid pressure at
the gun, use a fluid pressure regulator (M).
11. With the pump and lines primed, and with ade-
quate air pressure and volume supplied, the pump
starts and stops as the spray gun is opened and
closed. In a circulating system, the pump runs
continuously and speeds up or slows down as
supply increases or decreases until the air supply
is shut off.
CAUTION
Never allow the pump to run dry of the fluid being
pumped. A dry pump will quickly accelerate to a high
speed, possibly damaging itself. If your pump accel-
erates quickly, or is running too fast, stop it immedi-
ately and check the fluid supply. If the supply con-
tainer is empty and air has been pumped into the
lines, refill the container and prime the pump and the
lines with fluid, or flush and leave it filled with a
compatible solvent. Be sure to eliminate all air from
the fluid system.