Graco PT2500 Datasheet

APPLICATION EQUIPMENT FROM GRACO
INSTRUCTIONS-PARTS LIST 307–711
Rev K
Supersedes J
1/4 Gallon Per Minute, 120 VAC, 60 Hz
PT2500
ELECTRIC AIRLESS P AINT SPRA YER
3000 psi (210 bar) MAXIMUM WORKING PRESSURE
Model 218–796, Series D
Basic Sprayer without hose or gun.
Model 218–501, Series A
Complete Sprayer with hose and gun.
U.S. Patent No. 4,616,982
U.K. Patent No. 2,165,591
Other Foreign Patents Pending
Always Professional Results 
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1985, GRACO INC.
This manual contains IMPORTANT
INSTRUCTIONS and WARNINGS.
READ AND RETAIN FOR REFERENCE.

Liquids can be injected into the body by high pressure airless spray
or leaks – especially hose leaks.
Keep body clear of the nozzle. Never stop leaks with any part of the
body. Drain all pressure before removing parts.A void accidental trig -
gering
of gun by always setting safety latch when not spraying.
Never spray without a tip guard.
In case of accidental skin injection, seek immediate
“Surgical
T reatment”.
Failure to follow this warning can result in amputation or serious
injury.
FIRE AND
EXPLOSION HAZARD
SKIN INJECTION
HAZARD
READ AND UNDERSTAND ALL LABELS AND INSTRUCTION MANUALS BEFORE USE
Spray painting, flushing or cleaning equipment with flammable liq -
uids
in confined areas can result in fire or explosion.
Use outdoors or in extremely well ventilated areas. Ground equip -
ment,
hoses, containers and objects being sprayed.
Avoid all ignition sources such as static electricity from plastic drop
cloths, open flames such as pilot lights, hot objects such as ciga -
rettes,
arcs from connecting or disconnecting power cords or turn -
ing
light switches on and off.
Failure to follow this warning can result in death or serious injury .
NOTE: This is an example of the DANGER label on your sprayer .
This label is available in other languages, free of charge.
See page 23 to order .

307-711
WELCOME T O GRACO’S PAINTER’S TEAM
Before you use the PT2500Sprayer, please read this entire instruction manual.
It contains important information that will help you operate the sprayer safely and
efficiently, and will help you keep the sprayer in top operating condition.
TABLE OF CONTENTS
Terms 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PT2500 Sprayer Description 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Avertissement (French W arnings) 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Advertencia (Spanish W arnings) 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Startup 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Methods 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair Instructions 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Drawings and Lists 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Numbers 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data Back Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty Back Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TERMS
Be sure you read and understand each of these terms be -
fore
reading the rest of the manual.
WARNING Alerts the user to avoid or correct condi-
tions
which could cause bodily injury .
CAUTION Alerts user to avoid or correct conditions
which
could damage or destroy the equipment.
PRESSURE RELIEF PROCEDURE A safety proce-
dure
for relieving fluid pressure in the system.
FLUID INJECTION INJURY A serious injury, which
may appear to be only a simple cut, caused by the high
pressure injection of fluid directly into the body .
NOTE Gives additional explanation of a procedure or
helpful
hints.
Hazard of Using Fluids Containing Halogenated Hydrocarbons
Never
use 1,1, 1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids contain -
ing such solvents in this equipment. Such use could result in a serious chemical reaction, with the possibility of
explosion,
which could cause death, serious bodily injury and/or substantial property damage.
Consult your fluid suppliers to ensure that the fluids being used are compatible with aluminum and zinc parts.
WARNING
A
torque wrench is needed to properly check and tighten the valves and screws on this sprayer . Failure to torque
these parts at the specified intervals (see page 13) will result in leaking and serious damage to the sprayer .
CAUTION

3
307-711
PT2500 SPRAYER DESCRIPTION
PRESSURE CONTROL KNOB
OPEN
Counterclockwise
CLOSE
Clockwise
1/4 npsm(m) OUTLET
DIAPHRAGM
P
AINT PUMP
P AINT HOSE
REVERSE-A-CLEANTM IV
DripLessTM
TIP GUARD
AND SwitchT ipTM
SPRA Y TIP
BLACK MAX
TM
SPRAY GUN
STRAINER
MOTOR
HYDRAULIC PUMP
ON/OFF SWITCH
HYDRAULIC OIL FILL CAP
INCREASE Clockwise
DECREASE Counterclockwise
BYP
ASS V ALVE
0266
0267
0270
DRAIN TUBE
Motor
The
sprayer has a 1/2 HP , 120 V , 60HzAc, single phase,
1725 rpm motor . The motor is supplied with a three-wire
power supply cord and a three-prong plug. The sprayer
ON/OFF switch is located on the box on the side of the
motor. The motor’s function is to drive the hydraulic
pump.
The motor runs continuously when it is turned on
to keep the paint at the desired pressure.
Paint Pump
The paint pump is immersed directly into a 5 gallon paint
pail, so the pump is actually being pressure fed without
the
mess and trouble of pouring paint into a hopper .
Hydraulic Pump
The hydraulic pump is located inside the hydraulic reser -
voir.
The motor drives an eccentric bearing which pushes
the piston in and out of the hydraulic pump. The pump re -
ciprocates
the hydraulic fluid to operate the diaphragm.
Diaphragm
The diaphragm separates the hydraulic and paint por-
tions of the paint pump. Hydraulic oil causes the dia-
phragm to move up and down almost 30 times per sec-
ond,
no matter what pressure you are spraying at.
Pressure Control Knob
The paint pressure is regulated by turning the pressure
control knob clockwise to increase pressure and
counterclockwise
to decrease pressure.
Bypass V alve
The
bypass valve has two functions: (1) to assist in prim -
ing
the paint pump during initial startup, and (2) to provide
positive relief of paint pressure from the gun, hose and
sprayer.
Paint
Hose
One electrically conductive nylon paint hose is supplied
with sprayer Model 218–501. This 25 ft. (7 m) hose has
a 1/4 in. ID, 1/4 npsm(fbe) couplings and spring guards
on
both ends.
Spray Gun, Reverse-a-clean IV T ip Guard
And Spray T ip
The
spray gun supplied with Model 218–501 has a tough,
lightweight plastic body . The gun has a trigger safety le -
ver which prevents accidentally triggering the gun when
the lever is set in the safe position. (See WARNINGS,
page 4.)
The Reverse-A-Clean IV Tip Guard uses high pressure
fluid to unclog the spray tip without removing it from the
gun. (See page 12.) It includes a safety tip guard which
helps
reduce the risk of a fluid injection injury . A No. 315
spray tip for use with latex paint is also included.

4307-711
SAFETY W ARNINGS
HIGH PRESSURE SPRAY CAN CAUSE SERIOUS INJURY.
FOR PROFESSIONAL USE ONLY. OBSERVE ALL WARNINGS.
Read and understand all instruction manuals before operating the equipment.
FLUID INJECTION HAZARD
General Safety
This equipment generates very high fluid pressure. Spray from
the gun, leaks or ruptured components can inject fluid through
your
skin and into your body , and cause extremely serious bodily
injury, including the need for amputation. Also, fluid injected or
splashed
into the eyes or on the skin can cause serious damage.
NEVER point the spray gun at any one or at any part of the body .
NEVER
put your hand or fingers over the spray tip. NEVER try
to “blow back” paint; this is NOT an air spray system.
ALWAYS have the tip guard in place on the spray gun when
spraying.
ALWAYS follow the PRESSURE RELIEF PROCEDURE , below ,
before cleaning or removing the spray tip or servicing any sys -
tem equipment.
NEVER try to stop or deflect leaks with your hand or body .
Be sure equipment safety devices are operating properly before
each use.
Medical Alert––Airless Spray W ounds
If any fluid appears to penetrate your skin, get EMERGENCY
MEDICAL CARE AT ONCE. DO NOT TREAT AS A SIMPLE
CUT.
T ell the doctor exactly what fluid was injected.
Note to Physician : Injection in the skin is a traumatic injury . It
is important to treat the injury surgically as soon as possible.
Do not delay treatment to research toxicity. Toxicity is a
concern with some exotic coatings injected directly into the
blood
stream. Consultation with a plastic surgeon or reconstru -
ctive hand surgeon may be advisable .
Spray Gun Safety Devices
Be sure all gun safety devices are operating properly before
each
use. Do not remove or modify any part of the gun; this can
cause a malfunction and result in serious bodily injury .
Safety Lever
Whenever you stop spraying, even for a moment, always set the
gun safety lever in the closed or “safe” position, making the gun
inoperative. Failure to set the safety lever can result in accidental
triggering. See the illustration below .
SAFETY LEVER IN
“OFF SAFE” OR
SPRAYING
POSITION
SAFETY LEVER IN
“ON SAFE” OR
INOPERATIVE
POSITION
TRIGGER
V iew from front of gun
0268
Diffuser
The gun dif fuser breaks up spray and reduces the risk of fluid in -
jection when the tip is not installed. Check diffuser operation
regularly. Follow the Pressure Relief Procedure, below, then
remove
the spray tip. Aim the gun into a metal pail, holding the
gun firmly to the pail. Using the lowest possible pressure, trigger
the gun. If the fluid emitted is not dif fused into an irregular stream,
replace the dif fuser immediately .
Tip Guard
ALWAYS have the tip guard in place on the spray gun while
spraying. The tip guard alerts you to the fluid injection hazard
and
helps reduce, but does not prevent, the risk of accidentally
placing your fingers or any part of your body close to the spray
tip.
Trigger Guard
Always have the trigger guard in place on the gun when spraying
to reduce the risk of accidentally triggering the gun if it is dropped
or bumped.
Spray T ip Safety
Use extreme caution when cleaning or changing spray tips. If the
spray tip clogs while spraying, engage the gun safety lever im -
mediately.
AL WA YS follow the Pressure Relief Procedure, be -
low,
and then remove the spray tip to clean it.
NEVER wipe of f build–up around the spray tip until the pressure
is fully relieves and the gun safety is engaged.
Pressure Relief Procedure
To reduce the risk of serious bodily injury , including fluid injection,
splashing fluid or solvent in the eyes or on the skin, or injury from
moving parts or electric shock, always follow this procedure
whenever you shut of f the sprayer , when checking or servicing
any part of the spray system, when installing, cleaning or chang -
ing
spray tips, and whenever you stop spraying.
1. Shut of f the sprayer and unplug it.
2. Hold a metal part of the gun firmly to the side of a grounded
metal pail, and trigger the gun into the paint pail to relieve
pressure.
3.
Engage the gun safety lever .
4. Turn
the bypass valve ONE turn counterclockwise to drain
paint back into the pail.
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 part to relieve pressure
gradually,
then loosen completely . Now clear the tip or hose.
EQUIPMENT MISUSE HAZARD
General Safety
Misuse of the spray equipment or accessories, such as over
pressurizing, modifying parts, using incompatible chemicals and
fluids, or using worn or damaged parts, can cause them to rup -
ture and result in fluid injection, splashing in the eyes or the skin,
or other serious injury , or fire, explosion or property damage.
NEVER alter or modify any part of this equipment; doing so could
cause it to malfunction.
CHECK all spray equipment regularly and repair or replace worn
or damaged parts immediately .
Always
wear protective eyewear , gloves, clothing and respirator
as recommended by the fluid and solvent manufacturer .
System Pressure
This sprayer can develop 3000 psi (210 bar) MAXIMUM WORK -
ING PRESSURE. Be sure all spray equipment and accessories
used are rated to withstand the this pressure. DO NOT exceed
the maximum working pressure of any component or accessory
used in the system.
Fluid and Solvent Compatibility
All chemicals used in the sprayer are chemically compatible with
the wetted parts shown in the TECHNICAL DATA on the back
cover. Always read the chemical manufacturer ’ s literature before
using them in this sprayer .

5
307-711
FIRE OR EXPLOSION HAZARD
Static electricity is created by the flow of fluid through the pump
and hose. If every part of the spray equipment is not properly
grounded, sparking may occur , and the system may become haz -
ardous.
Sparking may also occur when plugging in or unplugging
a power supply cord or using a gasoline engine. Sparks can ignite
fumes from solvents and the fluid being sprayed, dust particles
and other flammable substances, whether you are spraying in -
doors
or outdoors, and can cause a fire or explosion and serious
bodily injury and property damage.
If you experience any static sparking or even a slight shock while
using this equipment, ST OP SPRA YING IMMEDIA TELY. Check
the entire system for proper grounding. Do not use the system
again until the problem has been identified and corrected.
Grounding
To reduce the risk of static sparking, ground the sprayer and all
other spray equipment used or located in the spray area.
CHECK
your local electrical code for detailed grounding instruc -
tions for your area and type of equipment. BE SURE to ground
all of this spray equipment:
1. Sprayer: plug the power supply cord, or extension cord, each
equipped with an undamaged three-prong plug, into a proper -
ly grounded outlet. Do not use an adapater. All extensions
cords
must have three wires and be rated for 15 amps.
2. Fluid hoses: use only grounded hoses with a maximum  f 500
ft (150 m) combined hose length to ensure grounding continu -
ity.
See Hose Grounding Continuity below.
3.
Spray gun: obtain grounding through connection to a properly
grounded fluid hose and sprayer .
4.
Object being sprayed: according to local code.
5. Fluid supply container: according to local code.
6. All solvent pails used when flushing, according to local code.
Use only metal pails, which are conductive. Do not place the
pail on a non–conductive surface, such as paper or card-
board,
which interrupts the grounding continuity .
7.
To maintain grounding continuity when flushing or relieving
pressure
, always hold a metal part of the gun firmly to the side
of a grounded metal pail, then trigger the gun.
Flushing Safety
Reduce the risk of fluid injection injury , static sparking, or splash -
ing
by following the flushing procedure given on page 13 of this
manual. Follow the Pressure Relief Procedure on page 2, and
remove the spray tip before flushing. Hold a metal part of the gun
firmly to the side of a grounded metal pail and use the lowest pos -
sible fluid pressure during flushing.
HOSE SAFETY
High pressure fluid in the hoses can be very dangerous. If the
hose develops a leak, split or rupture due to any kind of wear,
damage
or misuse, the high pressure spray emitted from it can
cause a fluid injection injury or other serious bodily injury or prop -
erty damage.
ALL FLUID HOSES MUST HA VE STRAIN RELIEFS ON BOTH
ENDS! The strain reliefs help protect the hose from kinks or bends
at or close to the coupling which can result in hose rupture.
TIGHTEN all fluid connections securely before each use. High
pressure
fluid can dislodge a loose coupling or allow high pres -
sure spray to be emitted from the coupling.
NEVER use a damaged hose. Before each use, check the entire
hose for cuts, leaks, abrasion, bulging cover, or damage or
movement of the hose couplings. If any of these conditions exist,
replace the hose immediately . DO NOT try to recouple high pres -
sure hose or mend it with tape or any other device. A repaired
hose
cannot contain the high pressure fluid.
HANDLE AND ROUTE HOSES CAREFULLY. Do not pull on
hoses to move equipment. Keep hoses clear of moving parts
and
hot surfaces of the pump and gas engine. Do not use fluids
or solvents which are not compatible with the inner tube and
cover of the hose. DO NOT expose Graco hoses to tempera-
tures
above 180  F (82  C) or below –40  F (–40 C).
Hose Grounding Continuity
Proper hose grounding continuity is essential to maintaining a
grounded spray system. Check the electrical resistance of your
fluid hoses at least once a week. If your hose does not have a
tag
on it which specifies the maximum electrical resistance, con -
tact the hose supplier or manufacturer for the maximum resis-
tance
limits. Use a resistance meter in the appropriate range for
your hose to check the resistance. If the resistance exceeds the
recommended limits, replace it immediately . An ungrounded or
poorly grounded hose can make your system hazardous. Also
read FIRE OR EXPLOSION HAZARD, above.
IMPORTANT
United States Government safety standards have been adopted under the Occupational Safety and Health Act. These standards –
particularly the General Standards, Part 1910, and the Construction Standards, Part 1926 – should be consulted.