Graco Inc 235465, 308237 User Manual

INSTRUCTIONS-PARTS LIST 308237

Rev E

This manual contains important
warnings and information.
READ AND RETAIN FOR REFERENCE

Supersedes B and PCN E

Silver Circulating
Airless Spray Gun

5000 psi (345 bar) Maximum Working Pressure

Model 235465, Series B

Includes the Standard (nonĆreversing) DripLesst
Tip Guard and 2 finger trigger.
Spray tip not included; order separately.

II 2 G

Patents Pending

INDEX

Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation/Operation 4. . . . . . . . . . . . . . . . . . . . . . .

ąSystem Requirements 4. . . . . . . . . . . . . . . . . . . .

ąHow to Use the Trigger Safety Latch 4. . . . . . . .

ąHow to Use the Gun 4. . . . . . . . . . . . . . . . . . . . . .

ąHow to Adjust the Spray Pattern 5. . . . . . . . . . . .

ąHow to Clean the Spray Tip

ąąand Clear a Spray Tip Obstruction 5. . . . . . . .

ąHow to Flush the Gun 6. . . . . . . . . . . . . . . . . . . .

ServiceĂ 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PartsĂ 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AccessoriesĂ 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical DataĂ 11. . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Phone Numbers 11. . . . . . . . . . . . . . . . . . . .

Warranty 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

01482

GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441

ECOPYRIGHT 1992, GRACO INC.

WARNINGS

High Pressure Spray Can Cause Serious Injury. For Professional Use Only.

Observe All Warnings. Read and understand all instruction manuals before operating 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 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 sysĆ
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 Wounds

If any fluid appears to penetrate your skin, get EMERGENCY

MEDICAL CARE AT ONCE. DO NOT TREAT AS A SIMPLE
CUT. Tell 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 reconstructive hand surĆ
geon may be advisable.

Spray Gun Safety Devices

This gun has several safety devices. Be sure all of them are operĆ
ating properly before each use. Do not remove or modify any
part of the gun; this can cause a malfunction and result in serious
injury.

Whenever you stop spraying, even for a moment, always set the
trigger safety latch in the engaged or safe" position, making the
gun inoperative. Failure to set the trigger safety latch can result
in accidental triggering of the gun. See Fig. 1.

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. See Fig. 2.

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. The fluid housing and heat shield act as a
trigger guard for this gun. See Fig. 2.

Spray Tip Safety

Use extreme caution when cleaning or changing spray tips. If the
spray tip clogs while spraying, engage the trigger safety latch
immediately. ALWAYS follow the PRESSURE RELIEF PROCEĆ
DURE, below, and then remove the spray tip to clean it.

NEVER wipe off build-up around the spray tip until the pressure
is fully relieved and the gun safety is engageed.

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 off the sprayer,
when checking or servicing any part of the spray system,
when installing, cleaning or changing spray tips, and
whenever you stop spraying.

. Engage the trigger safety latch.
. Shut off the power supply to the pump and close any

bleedĆtype master air valves.

. Disengage the trigger safety latch. Hold a metal part of

the gun firmly to the side of a grounded metal pail, and

trigger the gun to relieve pressure.
. Engage the trigger safety latch.
. Open the pressure drain valve (required in system),

having a container ready to catch the drainage. Leave

the 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 to relieve presĆ
sure gradually, then loosen completely. Now clear the tip
or hose.

MOVING PARTS HAZARD

Moving parts can pinch or amputate your fingers or other body
parts. KEEP CLEAR of moving parts when starting or operating
the sprayer. Follow the Pressure Relief Procedure, above, beĆ
fore checking or servicing any part of the sprayer, to prevent it
from starting accidentally.

RECOIL HAZARD

Due to the high pressure fluid emitted, a strong recoil action may
occur when you trigger this gun. If you are unprepared, your
hand could be forced back toward your body or you could lose
your balance and fall, resulting in serious injury.

2 308237

EQUIPMENT MISUSE HAZARD

General Safety

Any misuse of the spray equipment or accessories, such as
overpressurizing, modifying parts, using incompatible chemiĆ
cals and fluids, or using worn or damaged parts, can cause them
to rupture and result in fluid injection, splashing in the eyes or on
the skin, or other serious bodily injury, or fire, explosion or propĆ
erty 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. Wear
hearing protection when operating this equipment.

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
property damage.

All fluid hoses must have 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 presĆ
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 presĆ
sure hose or mend it with tape or any other device. A repaired
hose cannot contain the high pressure fluid.

System Pressure

Do not exceed 5000 psi (345 bar) Maximum Working Pressure
to the gun. Be sure all spray equipment and accessories used
are rated to withstand this pressure. Do not exceed the maxiĆ
mum working pressure of any component or accessory used in
the system.

Fluid and Solvent Compatibility

All chemicals used in the sprayer must be chemically compatible
with the wetted parts shown in the TECHNICAL DATA on the
back cover. Consult your chemical supplier to ensure compatiĆ
bility.

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 power supply. 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 temperatures 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, contact
the hose supplier or manufacturer for the maximum resistance
limits. Use a resistance meter in the appropriate range for your
hose to check the resistance. If the resistance exceeds the recĆ
ommended limits, replace it immediately. An ungrounded or
poorly grounded hose can make your system hazardous. Also
read FIRE OR EXPLOSION HAZARD, below.

_

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
hazardous. Sparking may also occur when plugging in or unĆ
plugging 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 indoors or outdoors, and can cause
a fire or explosion and serious bodily injury and property damĆ
age. Do not plug in or unplug any power supply cords in the
spray area when there is any chance of igniting fumes still in the
air.

If you experience any static sparking or even a slight shock while
using this equipment, stop spraying immediately. 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 instructions for
your area and type of equipment. Be sure to ground all of this
spray equipment:

IMPORTANT

. Pump or Sprayer: provide appropriate grounding as recomĆ

mended in your pump or sprayer instruction manual.

. Fluid hoses: use only grounded hoses with a maximum of

500 ft (150 m) combined hose length to ensure grounding
continuity. See Hose Grounding Continuity, above.

. Spray gun: obtain grounding through connection to a propĆ

erly grounded fluid hose and sprayer.

. Object being sprayed: according to local code.

. Fluid supply container: according to local code.

. 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 cardĆ
board, which interrupts the grounding continuity.

. 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

To reduce the risk of fluid injection injury, static sparking, or
splashing, be sure the system is properly grounded, relieve
pressure, remove spray tip. Hold a metal part of the gun firmly
to the side of a grounded metal pail and use the lowest possible
fluid pressure during flushing.

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.

308237 3

Installation/Operation

System Requirements.

WARNING

Keep the walletĆsized warning card provided with
this gun with the operator at all times. The card
contains important treatment information should
an injection injury occur. Additional cards are
available at no charge from Graco Inc.

WARNING

Be sure your system has a bleedĆtype master air
valve (pneumatic pumps only) and a pressure
drain valve. These accessories help reduce the
risk of serious bodily injury, including fluid injecĆ
tion, splashing in the eyes or on the skin, or injury
from moving parts, if you are adjusting or repairing
the pump or gun.

1. The bleedĆtype master air valve (airĆpowered
pumps only) 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.

2. The pressure drain valve assists in relieving fluid
pressure in the displacement pump, hose and
gun: triggering the gun to relieve pressure may
not be sufficient.

How to Use the Gun.

1. If an accessory inĆline filter is used, connect it to
the grounded fluid supply hose. Connect the
supply hose to one gun port and connect an elecĆ
trically conductive, fluid return hose to the other
port.

2. With no tip installed, start the pump. Flush the
pump according to the instructions supplied with
it. Prime the system with the fluid.

3. Follow the Pressure Relief Procedure on page

2. Be sure the trigger safety latch is engaged. See
Fig. 1.

4. Unscrew the tip guard (1) and install the tip (A)
and the gasket (2d) in the nut of the tip guard.
Screw the assembly firmly onto the gun. Tighten
the assembly with a wrench. See Fig. 2.

NOTE: If the gasket (2d) is not installed, the gun
will leak.

2d

A

1

3. Strain the fluid you are spraying if it contains
particles which could clog the spray tip.

How to Use the Trigger Safety Latch

1. To engage the trigger safety latch, turn the latch
(A) to a right angle with the gun body. See Fig. 1.

2. To disengage the trigger safety latch, push the
latch (A) out and turn it parallel with the gun body.

ENGAGED

DISENGAGED

Fig. 1

4 308237

01484

Fig. 2

5. Start the pump.Adjust the back pressure valve or
the RestrictĆAĆFlo valve in the circulating system
return line. Adjust the fluid pressure until the
spray is completely atomized. Use the lowest
pressure necessary to get the desired results.
Higher pressure may not improve the spray
pattern and will cause premature tip wear and
pump wear.

6. If adjusting the pressure does not give a good
spray pattern, follow the Pressure Relief ProceĆ
dure on page 2 and then try another tip size.

7. Use a fullĆopen, fullĆclose triggering action. Hold
the gun about 14 in. (350 mm) from and at right
angles to the work surface. Don't swing the gun
in an arc. Practice to find the best length and
speed of stroke.

01483