Graco fire-ball 425 Operation manual

Instructions – Parts List
GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441
Copyright 2001, Graco Inc. is registered to I.S. EN ISO 9001
75:1 Fire-Ballr425 Pumps
For pumping non–corrosive and non–abrasive
greases and lubricants only.
100 psi (0.7 MPa, 7 bar) Maximum Air Input Pressure
7500 psi (52 MPa, 517 bar) Maximum Working Pressure
Model No. 239729, Series B
120 lb (55 kg) drum length
Model No. 239730, Series B
400 lb (180 kg) drum length
Model No. 239731, Series B
stubby length
308777K
EN
06306B
Model 239730 Shown
WARNING
This pump is designed to be used only in pumping
non-corrosive and non-abrasive oils and lubricants.
Any other use of the pump can cause unsafe oper-
ating conditions and component rupture, which can
result in fluid injection, other serious injury, or fire or
explosion.
Important Safety instructions
Read all warnings and instructions in this manual.
Save these instructions.

2 308777K
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Drawing 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Hole Layout 19. . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Number 20. . . . . . . . . . . . . . . . . . . . . . . . . .
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
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. 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 stated on the equipment or in the Technical Data
for your equipment. Do not exceed the maximum working pressure of the lowest rated component
in your system.
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.
DHandle hoses carefully. Do not pull on hoses to move equipment.
DRoute hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 66_C (150_F) or below –40_C (–40_F).
DWear hearing protection when operating this equipment.
DDo not move or lift pressurized equipment.
DComply with all applicable local, state, and national fire, electrical, and safety regulations.

308777K 3
WARNING
SKIN INJECTION HAZARD
Fluid from the valve, leaks, or ruptured components can inject fluid into your body and cause ex-
tremely 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 is a serious injury. The injury may look like just a cut, but it is a serious
injury. Get immediate surgical treatment.
DDo not point the dispensing valve at anyone or any part of the body.
DDo not put your hand or fingers over the end of the dispensing valve.
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.
DFollow the Pressure Relief Procedure on page 8 before you clean, check, or service the
equipment.
DUse only extensions and nozzles that are designed for use with your dispensing valve.
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.
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers.
DKeep clear of all moving parts when starting or operating the pump.
DBefore checking or servicing the equipment, follow the Pressure Relief Procedure on page 8 to
prevent the equipment from starting unexpectedly.

4 308777K
WARNING
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and re-
sult in a fire or explosion and serious injury.
DGround the equipment and the object being dispensed to. See Grounding on page 6.
DIf there is any static sparking or you feel an electric shock while using this equipment, stop dis-
pensing 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 dispensed.
DKeep the dispensing area free of debris, including solvent, rags, and gasoline.
DDo not smoke in the dispensing area.
DNever 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.
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.
DThe air motor exhausts any fluids added to the input air.
DGraco does not manufacture or supply the reactive chemical components that may be used in this
equipment and is not responsible for injury or property loss, damage, expense or claims (direct or
consequential) that arise from the use of such chemical components.

308777K 5
Notes

6 308777K
Installation
Mounting the Pump
DSelect a convenient location for the equipment to
ensure easy operator access to the pump air
controls, sufficient room to change supply contain-
ers, and a secure mounting platform.
DIf you are mounting the pump directly on the supply
tank, position the pump so its intake valve is no
more than 1 in. (25 mm) from the bottom of the
container. Mount the pump to the cover or other
suitable mounting device.
WARNING
Mount the pump securely so that it cannot move
around during operation. Failure to do so could
result in personal injury or equipment damage.
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 accesso-
ries, available from your Graco distributor.
Grounding
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE OR EXPLOSION HAZ-
ARD on page 4.
To reduce the risk of static sparking, ground the pump.
Check your local electrical code for detailed grounding
instructions for your area and type of equipment. Be
sure to ground all of this equipment:
DPump: Use a ground wire and clamp as shown in
Fig. 1. Remove the ground screw (Z) and insert
through the eye of the ring terminal at end of
ground wire (Y). Fasten the screw back onto the
pump and tighten securely. Connect the other end
of the wire to a true earth ground. To order a
ground wire and clamp, order Part No. 222011.
DAir and fluid hoses: Use only electrically conductive
hoses.
DAir compressor: Follow manufacturer’s recommen-
dations.
DDispensing valve: Ground through connection to a
properly grounded fluid hose and pump.
DObject being dispensed to: 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 continu-
ity.
DTo maintain grounding continuity when flushing or
relieving pressure, hold a metal part of the dispens-
ing valve firmly to the side of a grounded metal pail,
then trigger the gun.
Fig. 1
TI1052
Y
Z

308777K 7
Installation
Mount the pump to suit the type of installation planned.
Very heavy lubricants may require an inductor plate.
See Dimensions on page 18 and Mounting Hole
Layout on page 19.
Install the air line accessories in the approximate order
shown in Fig. 2. Install a bleed-type master air valve
(B) within easy reach of the pump, upstream from the
air regulator (E). Install an air filter (C) to remove
harmful dirt and moisture from your compressed air
supply. For automatic air motor lubrication, install an
air line oiler (D) close to the pump air inlet. Install an
air regulator (E) to control pump speed.
The installations shown in Fig, 2 is only a guide for
selecting and installing system components and acces-
sories. Contact your Graco distributor for assistance in
designing a system to suit your particular needs.
If you supply your own accessories, be sure they are
adequately sized and pressure-rated to meet the
system requirements.
WARNING
A bleed-type master air valve (B) is required to
shut off and relieve air pressure that may be
trapped in the air motor. Trapped air could cause
the pump to cycle unexpectedly and cause serious
bodily injury, including amputation.
Be sure the air hose is properly sized to deliver an
adequate supply of air to the motor. See Technical
Data on page 19.
Connect a grounded dispensing hose (F) to the
3/8 npt(f) pump outlet. Install an appropriate gun or
dispensing valve (G) to the hose.
Ground the pump as explained in Grounding on
page 6.
Fig. 2
Key
A Grounded air line
B Bleed-type master air valve
C Air filter
D Air line oiler
E Air regulator
F Grounded dispensing hose
G Dispensing valve
H Elevator assy. with inductors
J Ground wire
Typical Installation
06309
A
C
BD
E
H
J
F
G

8 308777K
Operation
WARNING
DThis pump is designed to be used ONLY in
pumping non-corrosive and non-abrasive lubri-
cants and greases. Any other use of this pump
can cause unsafe operating conditions and
result in component rupture, fire, or explosion,
which can can cause serious bodily injury,
including injection.
DMoving parts can pinch or amputate your fin-
gers or other body parts. When the pump is
operating, the priming piston (located at the
pump intake) and the air motor piston (located
behind the air motor plates) move. Never
operate the pump with the air motor plates
removed, and keep your fingers and hands
away from the priming piston.
Pressure Relief Procedure
WARNING
SKIN INJECTION HAZARD
Fluid under high pressure can be in-
jected 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 dispensing
DCheck or service any of the system equipment
DInstall or clean the dispense valve tip
1. Close the air regulators.
2. Close the supply pump’s bleed-type master air
valve (required in this system).
3. Open the dispensing valve until pressure is fully
relieved.
If you suspect that the dispensing valve, extension, or
grease fitting coupler is clogged, or that pressure has
not been fully relieved after following the steps above,
very slowly loosen the coupler or hose end coupling
and relieve pressure gradually, then loosen completely,
then clear the clog.
Startup and Adjustment
Open the bleed-type master air valve. Open the
dispensing valve and slowly open the air regulator until
the pump is running smoothly. After all the air is
purged, close the dispensing valve. The pump starts
and stops as the valve is opened and closed.
CAUTION
Never allow the pump to run dry of the fluid being
pumped. A dry pump quickly accelerates to a high
speed and may damage itself. If your pump acceler-
ates quickly, or is running too fast, stop it immediate-
ly and check the fluid supply. If the supply container
is empty and air has been pumped into the lines,
prime the pump and lines with fluid, or flush the
pump and leave it filled with a compatible solvent.
Be sure to eliminate all air from the fluid system.
Use the air regulator (E) to control the pump speed
and fluid pressure. See Fig. 2. Always use the lowest
pressure necessary to obtain the desired results.
When you are done using the pump for the day, al-
ways follow the Pressure Relief Procedure at left.
Maintenance
The accessory air line oiler (D) provides automatic air
motor lubrication. For daily manual lubrication, discon-
nect the air hose, place about 15 drops of light ma-
chine oil in the air inlet, reconnect the hose, and turn
on the air supply to blow oil into the motor.

308777K 9
Troubleshooting
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
Before servicing this equipment always make sure to
Relieve the Pressure.
Note: Check all possible problems and solutions
before disassembling the pump.
Problem Cause Solution
Pump fails to operate. Inadequate air supply pressure or
restricted air lines
Increase air supply; clear
Closed or clogged valves Open; clean
Clogged fluid lines, hoses, valves,
etc.
Clear*
Damaged air motor Service air motor
Exhausted fluid supply Refill and reprime, or flush
Continuous air exhaust Worn or damaged air motor gasket,
packing, seal, etc.
Service air motor
Erratic pump operation Exhausted fluid supply Refill and reprime, or flush
ppp
Held open, or worn intake valve or
piston packings
Clear; service
Pump operates, but output low on
upstroke
Held open, or worn piston or packings Clear; service
Pump operates, but output low on
downstroke
Held open or worn intake valve Clear; service
Pump operates, but output low on
both strokes
Inadequate air supply or restricted air
lines
Increase air supply; clear
Closed or clogged valves Open; clean
Exhausted fluid supply Refill and reprime, or flush
Clogged fluid lines, hoses, valves,
etc.
Clear*
Packing nut too tight Loosen
Loose packing nut or worn packings Tighten; replace
* Follow the Pressure Relief Procedure, and disconnect the fluid line. If the pump starts when the air is turned
back on, the fluid line, hose, valve, etc., was clogged.

10 308777K
Displacement Pump Service
Fig. 3
06308
1
2
79
64
68
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}74
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}75
}76
70
78
73}1
}69
72
80 2
66}
77
62}
61
67
}62 68
Lips of v-packings
must face up.
Torque to 50 to 70 ft-lb
(68 to 95 NSm).
06336
72
1/4” ROD
71
Ref. No. 63 (copper gasket) and
Ref. No. 60}(cotter pin), see
Parts Drawing on page 16.
1
}59
}Included in Repair Kit
239734, which may be
purchased separately.