Graco Fire-Ball 237526 Datasheet

308485R
EN
Instructions - Parts List
3:1 Fire-Ball® 425 Pump
For pumping non-corrosive and non-abrasive oils and lubricants. For professional use
only.
Not approved for use in European explosive atmosphere locations.
Model 237526, Series B
540 psi (3.7 MPa, 37 bar) Maximum Working Pressure
180 psi (1.2 MPA, 12 bar) Maximum Air Input Pressure
Related Manuals
Important Safety Instructions
Read all warnings and instructions in this
manual before using the equipment.
Save these instructions.
Manual in
English Description
308201 Pump Runaway Valve

2 308485R
Contents
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
System Accessories. . . . . . . . . . . . . . . . . . . . . . . 6
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pressure Relief Procedure . . . . . . . . . . . . . . . . . . 8
Start Up and Adjustment . . . . . . . . . . . . . . . . . . . 8
Recycling and Disposal . . . . . . . . . . . . . . . . . . . . . 10
End of Product Life . . . . . . . . . . . . . . . . . . . . . . 10
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Air Motor and Throat . . . . . . . . . . . . . . . . . . . . . 12
Displacement Pump. . . . . . . . . . . . . . . . . . . . . . 15
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Air Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Performance Charts. . . . . . . . . . . . . . . . . . . . . . . . 20
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Model 237526 Pump, Series B . . . . . . . . . . . . . 21
Mounting Hole Layout . . . . . . . . . . . . . . . . . . . . 21
Technical Specifications . . . . . . . . . . . . . . . . . . . . 22
California Proposition 65 . . . . . . . . . . . . . . . . . . . . 23
Graco 10-Year Pump Warranty . . . . . . . . . . . . . . . 24

Warnings
308485R 3
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks.
When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings.
Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this
manual where applicable.
WARNING
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Specifications in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical
Specifications in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For
complete information about your material, request Safety Data Sheets (SDSs) from distributor or
retailer.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine
manufacturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and
create safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
SKIN INJECTION HAZARD
High-pressure fluid from dispensing device, hose leaks, or ruptured components will pierce skin. This
may look like just a cut, but it is a serious injury that can result in amputation. Get immediate surgical
treatment.
• Do not point dispensing device at anyone or at any part of the body.
• Do not put your hand over the fluid outlet.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Follow the Pressure Relief Procedure when you stop dispensing and before cleaning, checking, or
servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses and couplings daily. Replace worn or damaged parts immediately.

Warnings
4 308485R
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read Safety Data Sheets (SDSs) to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
PRESSURIZED ALUMINUM PARTS HAZARD
Use of fluids that are incompatible with aluminum in pressurized equipment can cause serious
chemical reaction and equipment rupture. Failure to follow this warning can result in death, serious
injury, or property damage.
• Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
fluids containing such solvents.
• Do not use chlorine bleach.
• Many other fluids may contain chemicals that can react with aluminum. Contact your material
supplier for compatibility.
FIRE AND EXPLOSION HAZARD
When flammable fluids are present in the work area, such as gasoline and windshield wiper fluid, be
aware that flammable fumes can ignite or explode. To help prevent fire and explosion:
• Use equipment only in well-ventilated area.
• Eliminate all ignition sources, such as cigarettes and portable electric lamps.
• Ground all equipment in the work area.
• Keep work area free of debris, including rags and spilled or open containers of solvent and gasoline.
• Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.
• Use only grounded hoses.
•Stop operation immediately if static sparking occurs or you feel a shock. Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
MOVING PARTS HAZARD
Moving parts can pinch, cut or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Equipment can start without warning. Before checking, moving, or servicing equipment, follow the
Pressure Relief Procedure and disconnect all power sources.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury, including
eye injury, hearing loss, inhalation of toxic fumes, and burns. Protective equipment includes but is not
limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.
WARNING

Typical Installation
308485R 5
Typical Installation
The typical installation shown in FIG. 1 is only a guide for selection and installation of a pump. It is not an actual
system design. Contact your Graco representative or Graco distributor for assistance in the design of a suitable
system.
Key:
A Bleed-type master air valve (required)
B Air line filter
C Air regulator and gauge
D Pump runaway valve (shown for position) not needed if
using a low-level cut-off valve
E Air inlet
G Pump (Model 237526 shown)
H Fluid drain valve (required)
J Dispensing valve (model 222411 shown)
K Thermal relief kit (required) Part No. 237601
L Male quick-disconnect pin fitting (alternative to A)
M Female quick-disconnect coupler (alternative to A)
N Air line lubricator
P Fluid hose
R Electrically conductive air hose (218093 shown)
S Fluid inlet, 1 1/2 in. npt
T Wall mounting bracket Part No. 238245
Y Ground wire (required)
FIG. 1: Typical Installation
For Portable Applications
NOTICE
Always mount the pump firmly to a bracket or a tank
cover. Do not operate the pump if it is not mounted,
doing so could damage the pump and the fittings.

Installation
6 308485R
Installation
System Accessories
Install the accessories shown in FIG. 1.
• Install an air line lubricator (N) for automatic air
motor lubrication.
• Install a bleed-type master air valve (A) to relieve air
trapped between it and the motor when the valve is
closed. To order a 1/2 npt, 300 psi (2.1 MPa, 21
bar) maximum working pressure bleed-type master
air valve, order Part No.107142.
• As an alternative to a bleed-type master air valve,
installation of an air line female quick-disconnect
coupler (M) and a male quick-disconnect pin fitting
(L) (see FIG. 1) can serve as an air-bleed device. T.
• Install an air regulator (C) to control the pump
speed and pressure.
• Install an air line filter (B) to remove harmful dirt and
contaminants from the compressed air supply.
• Install another bleed-type master air valve (A) to
isolate the accessories for servicing.
• Install a drain valve (H) near the pump fluid outlet to
relieve fluid pressure in the hoses and gun when
opened. To order a fluid drain valve, order Part No.
210658.
• Install a suitable fluid hose (P) and dispensing valve
(J).
• Install a thermal relief kit (K) to relieve pressure in
the fluid line caused by heat expansion. To order a
600 psi (4.1 MPa. 41 bar) minimum relief pressure,
630 psi (4.4 MPa, 44 bar) maximum relief pressure
thermal relief kit, order Part No. 237601.
NOTICE
Do not hang the air accessories directly on the air inlet
(E). The fittings are not strong enough to support the
accessories and may cause one or more to break.
Provide a bracket to mount the accessories.
Four accessories are required in the system: an air
shut-off valve’s bleed device, fluid drain valve,
thermal relief kit, and ground wire. These accessories
help reduce the risk of serious bodily injury including
fluid injection, splashing in the eyes or on the skin,
injury from moving parts if adjusting or repairing the
pump, and explosion from static sparking.
The air bleed device relieves air trapped between it
and the air motor after the air supply is shut off.
Trapped air can cause the air motor to cycle
unexpectedly, causing serious bodily injury when
adjusting or repairing the pump. Use either a
bleed-type master air valve (A) or a quick-disconnect
coupler with male quick-disconnect pin fitting (L).
Install near the pump air inlet, within easy reach of
the pump.
The fluid drain valve (H) assists in relieving fluid
pressure in the displacement pump, hoses and
dispensing valve. Triggering the dispensing valve (J)
to relieve pressure may not be sufficient.
The thermal relief kit (K) assists in relieving pressure
in the pump, hose, and dispensing valve due to heat
expansion.
The ground wire (Y) reduces the risk of static
sparking.

Installation
308485R 7
Grounding
Follow local electrical code for detailed grounding
instructions.
Pump:
Refer to FIG. 2 for the following instructions.
1. Remove the ground screw (Z) located on the side of
the pump base.
2. Insert the ground screw (Z) through the eye of the
ring terminal (W) located at the end of the ground
wire (Y).
3. Fasten the ground screw (Z) back onto the back of
the pump and tighten the screw securely.
4. Connect the other end of the ground wire (Y) to a
true earth ground. To order a ground wire and
clamp, order Part No. 222011.
Air and fluid hoses: use only electrically conductive
hoses.
Air compressor: follow manufacturer’s
recommendations.
Fluid supply container: follow local code.
To maintain grounding continuity when flushing or
relieving pressure: hold metal part of the dispense
valve firmly to the side of a grounded metal pail, then
trigger the valve.
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes
to ignite or explode. Grounding provides an escape
wire for the electric current.
FIG. 2
Z
W
Y

Operation
8 308485R
Operation
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1. Close the pump air regulator (C) and the bleed-type
master air valve (A) (required in the system).
2. Hold a metal part of the dispensing valve (J) firmly
to a grounded metal waste container and trigger
the valve to relieve the fluid pressure.
3. Open the drain valve (H).
Start Up and Adjustment
To determine the fluid output pressure using the air
regulator reading, multiply the ratio of the pump by the
air pressure shown on the regulator gauge. For
example:
3 (:1) ratio x 180 psi air = 540 psi fluid output
3 (:1) ratio x 12 bar air = 36 bar fluid output
3 (:1) ratio x 1.2 MPa air = 3.6 MPa fluid output
1. With the air regulator (C) closed, open the
bleed-type master air valves (A), or, if so equipped,
join the female quick-disconnect coupler (M) to the
male quick-disconnect pin fitting (L).
2. Open the dispensing valve (J) into a grounded
metal waste container, making firm metal-to-metal
contact between the container and valve,
3. Open the pump air regulator (C) slowly, just until the
pump is running. When the pump is primed and all
of the air has been pushed out of the lines, close
the dispensing valve.
NOTE: When the pump is primed, and with sufficient air
supplied, the pump starts when the dispensing valve is
opened and shuts off when it is closed.
4. If the system is equipped with a runaway valve (D),
set it for the system configuration. See Pump
Runaway Valve manual for setting instructions.
5. Adjust the air regulator until there is sufficient flow
from the dispensing valve. Always run the pump at
the lowest speed necessary for the desired results,
making sure not to exceed the maximum working
pressure of any component in the system.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid and moving parts, follow the Pressure Relief
Procedure when you stop dispensing and before
cleaning, checking, or servicing the equipment.
COMPONENT RUPTURE HAZARD
The maximum working pressure of each component
in the system may not be the same. To reduce the
risk of over-pressurizing any component in the
system, be sure you know the maximum working
pressure of each component. Never exceed the
maximum working pressure of the lowest rated
component in the system. Over-pressurizing can
result in rupture, fire, explosion, property damage,
and serious injury.
Limit the air to the pump so that no air line or fluid line
component or accessory is over-pressurized.
The air motor exhaust coming out of the muffler
could contain harmful materials, such as oil,
anti-freeze, or some of the material being pumped.
Wear appropriate protective equipment when in the
work area to help prevent serious injury, including
inhalation of toxic fumes.

Operation
308485R 9
NOTE: Stop the pump if it is accelerating too quickly or
is running too fast, 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 it and leave filled with a compatible solvent.
Ensure that all air is eliminated from the fluid lines. If the
system has a runaway valve, reset it according to the
instructions in the Pump Runaway Valve manual.
6. Read and follow the instructions supplied with each
of your system components.
7. If the pump will be unattended for any period of
time, if there is an air supply interruption, or to shut
off the system at the end of the work shift, relieve
pressure following the Pressure Relief Procedure,
page 8.
Do not allow the pump to run dry of the fluid being
pumped. A dry pump will quickly accelerate to a high
speed, possibly damaging itself, and it may become
very hot.

Recycling and Disposal
10 308485R
Recycling and Disposal
End of Product Life
At the end of the product’s useful life, dismantle and
recycle it in a responsible manner.
• Perform the Pressure Relief Procedure in your
pump manual.
• Drain and dispose of fluids according to applicable
regulations. Refer to the material manufacturer’s
Safety Data Sheet.
• Deliver remaining product to a recycling facility.