Graco 206897 Operation manual

Instructions – Parts List
GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441
Copyright 1997, Graco Inc. is registered to I.S. EN ISO 9001
STAINLESS STEEL
30:1 Ratio President Pump
3600 psi (25.2 MPa, 252 bar) Maximum Working Pressure
Model 206897, Series F
306769 Rev.G
Read warnings and instructions.
Parts

2 306769
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Hole Layout 15. . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Information 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the corresponding
instructions.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
corresponding instructions.
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
DRead all instruction manuals, tags, and labels before operating the equipment.
DUse the equipment only for its intended purpose. If you are not sure, contact your Graco distribu-
tor.
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 14 for the maximum working pressure of this equipment.
DUse fluids and solvents which are compatible with the equipment wetted parts. Refer to the
Technical 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 82_C (180_F) or below –40_C (–40_F).
DDo not lift pressurized equipment.
DWear hearing protection when operating this equipment.
DComply with all applicable local, state, and national fire, electrical, and safety regulations.
WARNING
WARNING
INSTRUCTIONS

3306769
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 into the eyes or onto 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
medical 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 7 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.
DFluid hoses must have spring guards on both ends, to help protect them from rupture caused by
kinks or bends near the couplings.
WARNING
WARNING
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause serious injury or death if splashed into the eyes or onto 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 a respirator as recommended by the fluid
and solvent manufacturer.

4 306769
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
spraying 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.
WARNING
WARNING
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.
DBefore servicing the equipment, follow the Pressure Relief Procedure on page 7 to prevent
the equipment from starting unexpectedly.

5306769
Installation
NOTE: Reference numbers and letters in parentheses
refer to callouts in the figures and parts drawing.
Mount the pump to suit the type of installation planned.
The pump dimensions and mounting hole layout are
shown on page 15.
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.
DPump: Use the ground wire and clamp. See
Fig. 1. Loosen the grounding lug locknut (W) and
washer (X). Insert one end of the ground wire (Y)
into the slot in the lug (Z), and tighten the locknut
securely. Connect the other end of the wire to a
true earth ground. Order Part No. 237569, Ground
Wire and Clamp.
W
Y
X
Z
0720
Fig. 1
DAir and fluid hoses: Use only electrically conductive
hoses with 500 ft (150 m) maximum combined hose
length to ensure grounding continuity.
DAir compressor: Follow manufacturer’s
recommendations.
DSpray gun or dispensing valve: Connect to a
properly grounded fluid hose and pump.
DObject being sprayed: Follow your local code.
DFluid supply container: Follow your local code.
DSolvent 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
continuity.
DTo maintain proper grounding continuity when
flushing or relieving pressure, always hold the metal
part of the spray gun firmly to the side of a
grounded metal pail, then trigger the gun.

6 306769
Installation
8000
F
A
B
C
E
D
G
AIR INLET
3/8 npt(f)
OUTLET
1/4 npt(f)
3/4 npt(f) INLET
K
J
H
L
NOTE: The Typical Installation shown above is only a
guide to selecting and installing required and optional
accessories. For assistance in designing a system to
suit your needs, contact your Graco representative.
WARNING
Two accessories are required in your system; a
bleed-type master air valve (A) and a fluid drain
valve (H). These accessories help reduce the risk
of serious injury including injection, splashing in the
eyes, 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
regulator 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.
Connect a suction hose or siphon tube (L) to the 3/4
npt(f) intake of the pump.
Install the air line accessories in the approximate order
shown in the Typical Installation. Install the
bleed-type master air valve (A) within easy reach of
the pump. A pump runaway valve (B) installed on the
air line senses when the pump if running too fast and
shuts off the air supply to the motor. An air filter (C)
removes harmful dirt and moisture from your
compressed air supply. For automatic air motor
lubrication, install an air line lubricator (D) close to the
pump air inlet. Install an air regulator (E) to control air
to the motor and pump speed.
Be sure the air supply hose is properly grounded, and
is at least 1/2 in. (13 mm) ID in order to supply an
adequate volume of air to the motor.
On the fluid line, install a drain valve (H) close to the
fluid outlet to assist in relieving fluid pressure and a
fluid filter (J) to help prevent tip clogging. Connect a
suitable, electrically conductive fluid hose and spray
gun to the pump’s 1/4 in. npt outlet.

7306769
Operation
Pressure Relief Procedure
WARNING
PRESSURIZED EQUIPMENT HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. To
reduce the risk of an injury from accidental spray
from the gun, 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/nozzle.
1. Lock the gun/valve trigger safety.
2. Close the pump air regulator.
3. Close the master bleed-type air valve (required in
your system).
4. Unlock the gun/valve trigger safety.
5. Hold a metal part of the gun/valve firmly to a
grounded metal waste container and trigger to
relieve the fluid pressure.
6. Lock the gun/valve trigger safety.
7. Open the pump drain valve (required in your
system), having a container ready to catch the
drainage.
8. 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, slowly loosen the tip
guard retaining nut or hose end coupling and relieve
pressure gradually, then loosen it completely. Then
clear the tip or hose.

8 306769
Operation
WARNING
Never operate the pump with the air motor plates
removed. Moving parts in the air motor can pinch
or amputate fingers.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 7.
The pump was tested in oil, and some oil was left in
the pump. If the oil will contaminate the fluid you are
pumping, flush it out.
Fill the packing nut/wet-cup 1/2 full with Graco Throat
Seal Liquid or a compatible solvent. Keep the cup filled
at all times to help prevent the fluid you are pumping
from drying on the displacement rod and damaging the
throat packings.
To start the pump, turn on the main air supply. Open
the bleed-type master air valve (A). Open the (last)
spray gun. Slowly open the air regulator until the pump
is running smoothly (about 40 psi (280 kPa, 2.8 bar)].
Operate the pump until all air is purged from the
system. Release the gun trigger and engage the gun
safety latch.
Use the air regulator (F) to control fluid pressure and
pump speed. Always use the lowest pressure
necessary to get the desired results. Higher pressures
cause premature pump wear and spray tip wear, and
usually do not improve the spray pattern.
WARNING
To reduce the risk of overpressurizing your system,
which could result in component rupture and cause
serious injury, never exceed 120 psi (840 kPa, 8.4
bar) Maximum Incoming Air Pressure to the pump.
In a direct supply system, with adequate air pressure
supplied to the motor, the pump starts when the gun or
dispensing valve is opened, and stalls against
pressure when it is closed.
If the pump accelerates quickly or is running too fast,
stop it immediately. Check the fluid supply and refill it if
necessary. Prime the pump to remove all air from the
system, or flush the pump and relieve the pressure.
NOTE: A pump runaway valve (B) can be installed on
the air line to automatically shut off the pump if it starts
to run too fast.
Shutdown and Care of the Pump
Always stop the pump at the bottom of its stroke to
prevent fluid from drying on the rod and damaging the
throat packings.
If you are pumping fluid which dries, hardens, or sets
up, flush the system with a compatible solvent as often
as necessary to prevent a buildup of dried fluid in the
pump or hoses.
Check the tightness of the packing nut weekly. It
should be tight enough to stop leakage, but no tighter.
Always relieve the pressure before adjusting the
packing nut.
Flushing
To reduce the risk of injection injury, static sparking, or
splashing, relieve the pressure and remove the spray
tip before flushing. Hold a metal part of the gun/valve
firmly to the side of a grounded metal pail and use the
lowest possible fluid pressure during flushing.

9306769
Troubleshooting
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 7.
NOTE: Check all possible problems and solutions
before disassembling the pump.
NOTE: Before servicing this equipment, always make
sure to relieve the pressure.
PROBLEM CAUSE SOLUTION
Pump does not operate, or
no fluid flow
Loose or broken pump parts Disassemble, check, repair.
no fluid flow Restricted line or inadequate air supply Clear, increase.
Exhausted fluid supply Refill and prime.
Clogged fluid hoses Clean, or replace.
Held open or worn piston or intake valve Repair. See page 10.
Damaged air motor Repair; see manual 306982.
Pump operates, but output
is low
Insufficient air supply Increase.
is low Exhausted fluid supply Refill and prime.
Obstructed gun or dispensing valve Clear.
Damaged fluid pump packings Replace.
Held open or worn piston or intake valve Repair. See page 10.
Erratic or accelerated op-
eration
Exhausted fluid supply Refill and prime.
eration Fluid intake or piston valve worn. Repair; see manual 307719.

10 306769
Service
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 7.
Before you start
DHave all necessary parts on hand. Recommended
spare parts are shown in the parts list, for example,
(113*). A packing repair kit is not available.
DFor best results, always replace the glands when
replacing the packings.
DUse a compatible solvent to clean parts. Inspect for
wear or damage and replace parts as needed.
Scoring or irregular surfaces on the displacement
rod (108) or polished inlet wall of the sleeve (107)
causes premature packing wear and leaking. Check
these parts by rubbing a finger on the surface and
by holding the parts up to the light at a slight angle.
DUse light, water-proof grease wherever lubrication
is indicated.
Disassembly (See Figs. 2, 3, and 4)
1. Flush the pump, if possible. Relieve the pressure.
Disconnect all air and fluid hoses. Remove the
pump from its mounting and clamp it in a vise.
2. Unscrew the coupling (115) from the bushing
(114). Loosen the locknut setscrews (6) and
unscrew the locknuts (11) from the mounting tubes
(2, 3). Do not lose the nylon pellets (9) in the
locknuts. Pull the pump off the mounting tubes.
CAUTION
If replacing the mounting tubes (2, 3), wrench them
close to the air motor base during disassembly and
reassembly to prevent damaging the threads in the
air motor base. Also, lubricate the threads.
3. Clamp the displacement pump in a vise. Place a
wrench on the flats of the intake valve body (121)
and unscrew it. Remove all intake valve parts.
4. Unscrew the coupling bushing (114) from the
displacement rod (108). Loosen the packing nut
(120). Push the rod down as far as possible and
grasp the piston flats to pull the rod assembly out.
5. Unscrew the piston (119) and remove all packings,
ball, and glands.
6. Remove the packing nut (120), packings, and
glands from the pump housing (118) throat.
7. Clean and inspect all parts. If the sleeve (107)
does not come out with the rod, inspect it in place.
If you must remove the sleeve, and it does not
come out easily, contact your Graco
representative. Install the new sleeve with the
tapered end down.
NOTE: The seats in the intake (121) and piston (119)
bodies are hard carbide. Do not attempt to reseat the
balls as that will chip the seat.
Fig. 2
8001
115
11
11
6
118
116
102
106
117
121
INTAKE
VALVE
AIR
MOTOR
BASE
1CAUTION – Wrench upper ends of
tubes if removing from air motor.
1