misuse can cause the equipment to rupture or malfunction and result in serious injury
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.
.
.
Read all instruction manuals, tags, and labels before operating the equipment.
Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor
Do not alter or modify this equipment.
Check equipment daily
Do not exceed the maximum working pressure of the lowest rated system component. Refer to the
T
echnical Data
Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the
nical Data
Do not 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.
Do not use hoses to pull equipment.
Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 66C (150F) or below –40C (–40
W
ear hearing protection when operating this equipment.
Do not lift pressurized equipment.
on page 14 for the maximum working pressure of this equipment.
section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.
. Repair or replace worn or damaged parts immediately
F).
.
.
Tech-
Comply with all applicable local, state, and national fire, electrical, and safety regulations.
Page 3
WARNING
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 in the eyes or on the skin can also
cause serious injury
Fluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate medi
cal attention.
Do not point the gun at anyone or at any part of the body
Do not put your hand or fingers over the spray tip.
Do not stop or deflect leaks with your hand, body
Do not “blow back” fluid; this is not an air spray system.
Always have the tip guard and the trigger guard on the gun when spraying.
Check the gun dif
Be sure the gun trigger safety operates before spraying.
Lock the gun trigger safety when you stop spraying.
.
fuser operation weekly
.
, glove or rag.
. See page 8.
-
Follow the
checking or servicing the equipment.
T
ighten all fluid connections before operating the equipment.
Check the hoses, tubes, and couplings daily
Do not repair high pressure couplings; you must replace the entire hose.
Fluid hoses must have spring guards on both ends, to help protect them from rupture caused by
kinks or bends near the couplings.
Pressure Relief Procedure
on page 5 if the spray tip clogs and before cleaning,
. Replace worn or damaged parts immediately.
MOVING PARTS HAZARD
Moving
parts can pinch or amputate your fingers.
Keep clear of all moving parts when starting or operating the pump.
Before servicing the equipment, follow the
equipment from starting unexpectedly
Pressure Relief Procedure
.
on page 5 to prevent the
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
.
Page 4
WARNING
FIRE AND EXPLOSION HAZARD
Improper
result in a fire or explosion and serious injury
grounding, poor ventilation, open flames or sparks can cause a hazardous condition and
.
If there is any static sparking or you feel an electric shock while using this equipment,
ing immediately. Do not use the equipment until you identify and correct the problem.
Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being sprayed.
Keep the spray area free of debris, including solvent, rags, and gasoline.
Electrically disconnect all equipment in the spray area.
Extinguish all open flames or pilot lights in the spray area.
Do not smoke in the spray area.
Do not turn on or of
Do not operate a gasoline engine in the spray area.
Ground the equipment and the object being sprayed. Refer to your pump instruction manual.
f any light switch in the spray area while operating or if fumes are present.
TOXIC FLUID HAZARD
stop spray-
Hazardous
inhaled, or swallowed.
Know the specific hazards of the fluid you are using.
Store hazardous fluid in an approved container
state and national guidelines.
fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,
, gloves, clothing and respirator as recommended by the fluid and
.
. Dispose of hazardous fluid according to all local,
4
308-235
Page 5
Installation/Operation
Pressure Relief Procedure
WARNING
WARNING
INJECTION
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally
under high pressure can be injected through the
skin and cause serious injury
an injury from injection, splashing fluid, or moving
parts, follow the
whenever you:
are instructed to relieve the pressure,
stop spraying,
check or service any of the system equipment,
or install or clean the spray tips.
1.
Lock the gun trigger safety
2.
Shut of
bleed-type master air valves.
3.
Unlock the gun trigger safety
4.
Hold a metal part of the gun firmly to the side of a
grounded metal pail, and trigger the gun to relieve
pressure.
f the power supply to the pump. Close any
HAZARD
. Fluid
. T
o reduce the risk of
Pressure Relief Procedure
.
.
Be sure your system has a bleed-type master air
valve (pneumatic pumps only) and a pressure drain
valve. These accessories help reduce the risk of
serious bodily injury
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 bleed-type master air valve
pumps only) relieves air trapped between this
valve and the pump after the air regulator is shut
off. T
rapped air can cause the pump to cycle
unexpectedly.
2.
The pressure drain valve
pressure in the displacement pump, hose and gun:
triggering the gun to relieve pressure may not be
sufficient.
3.
Strain the fluid you are spraying if it contains
particles which could clog the spray tip.
, including fluid injection,
(air-powered
assists in relieving fluid
How to Use the Gun Trigger Safety
5.
Lock the gun trigger safety
6.
Open the drain valve (required in your system),
having a container ready to catch the drainage.
7.
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,
tip guard retaining nut or hose end coupling and relieve
pressure gradually
the tip or hose.
, then loosen completely
.
very slowly
loosen the
. Now clear
System Requirements
WARNING
Keep
the wallet-sized warning card provided with
this gun with the operator at all times. The card
contains important treatment information should an
injection injury occur
at no charge from Graco Inc.
. Additional cards are available
1. To
lock the gun trigger safety
a right angle with the gun body
2. T
o unlock the gun trigger safety
out and turn it parallel with the gun body
UNLOCKED
Fig. 1
, turn the latch (A) to
LOCKED
. See Fig. 1.
, push the latch (A)
.
01464
Page 6
Installation/Operation
How to Use the Gun
1. Guide
2.
a grounded fluid hose (with spring guard)
through the hose guard (14) and connect the hose
to the gun inlet. See Fig. 2.
With no tip installed, start the pump. Flush the
pump according to the instructions supplied with it.
Prime the system with the fluid.
If adjusting the pressure does not give a good
7.
spray pattern, follow the
dure
on page 5 and then try another tip size.
8.
Use a full-open, full-close 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.
Pressure Relief Proce
-
WARNING
T
o reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
3.
Relieve the pressure.
safety is locked. See Fig. 1.
4.
Model 235–459: 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. T
ighten the assembly with a wrench. See
Fig. 2.
NOTE:
will leak.
5.
Models 235–459 and 237–691: install the
SwitchT
308–644, supplied.
If the gasket (2d) is not installed, the gun
ip (19) and the tip guard (18). See manual
2d
A
1
on page 5.
Be sure the gun trigger
How to Adjust the Spray Pattern.
1. To
adjust the spray pattern direction, follow the
Pressure Relief Procedure
the tip guard retaining nut (B). T
tip groove horizontally (C) for a horizontal pattern
and vertically (A) for a vertical pattern. T
retaining nut.
2.
The spray tip orifice and spray angle determines
the coverage and size of the pattern. When more
coverage is needed, use a larger spray tip rather
than increasing the fluid pressure.
on page 5. Loosen
urn the tip guard/
ighten the
CAUTION
The openings in the tip guard reduce paint buildup on
the tip guard while spraying. Any damage to the
sharp edges of the openings causes paint to collect
at that area. Never hang the gun by the tip guard.
KEY
ATip
guard shown in position for
vertical spray pattern
B
Retaining nut
CT
ip guard shown in position for
horizontal spray pattern
14
19
18
Fig. 2
6.
Start the pump. 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
01463
B
A
Fig.
3
.
C
Page 7
Installation/Operation
How to Clean the Spray Tip
and Clear a Spray Tip Obstruction.
WARNING
To
reduce the risk of fluid injection or splashing in
the eyes or on the skin,
or rag in front of the spray tip when cleaning or
checking a clogged tip. Point the gun toward the
ground or into a waste container when checking to
see if the spray tip is cleared.
Do not
spray gun.
Do not
until pressure is relieved.
Cleaning during the day.
try to “blow back” paint; this is
wipe fluid buildup of
do not
hold a hand, body
not
f the gun or spray tip
an air
2.
Remove the spray tip and blow out the obstruction
by applying air to the front of the spray tip. Or
the spray tip and gun nozzle soak to dissolve the
obstruction. If it won’t dissolve, jar it out by tapping
the back of the spray tip against a flat surface.
, let
CAUTION
Never soak the entire gun in solvent. Prolonged
exposure to solvent can ruin the packings.
Gun 235–459 and 237–691– with RAC IV tip guard
1.
Engage the trigger safety latch. Rotate the RAC IV
tip handle 180. See Fig. 4.
2.
Disengage the trigger safety latch. T
into a pail or onto the ground to remove clog.
3.
Engage the trigger safety latch. Rotate the tip
handle to the spraying position.
rigger the gun
1. Follow
2.
Clearing an obstruction.
If the spray tip clogs while spraying, immediately stop
spraying, then:
Gun 235–458 – with standard tip guard
1.
the
Pressure Relief Procedure,
Clean the front of the tip frequently during the day
to help reduce buildup. Also clean the tip and tip
guard at the end of each work day
soaked brush to clean the spray tip.
Engage the trigger safety latch, open the pressure
drain valve.
page 5.
. Use a solvent-
4.
If the tip is still clogged, lock the gun trigger safety
shut of
f the sprayer and disconnect the power
source, and open the pressure drain valve to
relieve pressure. Clean the spray tip as shown in
manual 308–644, supplied with the RAC IV
KEY
AHandle
Fig. 4
shown in
spraying position. T
handle 180 and
trigger gun to clear
clog.
urn
A
,
.
Page 8
Installation/Operation
How to Check the Gun Diffuser Operation
Check
the dif
fuser operation weekly
seat (2a) breaks up spray and reduces the risk of fluid
injection when the tip is not installed. Perform the test
below
. If it fails, replace the entire Needle Kit, Part No.
235–474, as instructed on page 7. Dif
not sold separately since the gun will leak if an old
needle is used with a new dif
. The gun dif
fuser/seats are
fuser/seat.
fuser/
WARNING
T
o reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
1.
Follow the
2.
Remove the tip guard and spray tip.
3.
Start the sprayer and adjust it to the lowest
pressure.
4.
Aim the gun into a grounded metal pail while
holding it firmly to the pail. T
fluid emitted
stream, replace the entire needle kit immediately
See Fig. 5.
Pressure Relief Procedure, page 5.
is not
on page 5.
rigger the gun. If the
dif
fused into an irregular
How to Flush the Gun.
Always
being sprayed can dry in it.
NOTE:
provided in your pump or sprayer manual should be
used instead of this procedure.
flush the pump and the gun before the fluid
If it is available, the flushing procedure
WARNING
FIRE AND EXPLOSION HAZARD
Static sparking and splashing may cause
fire, explosion and serious injury
reduce static sparking and splashing,
always remove the spray tip from the gun, and hold
a metal part of the gun firmly to the side of a
grounded metal pail when flushing.
. To
WARNING
T
o reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
1.
.
Follow the
2.
Remove the tip guard and spray tip. Soak and
clean the parts.
Pressure Relief Procedure,
on page 5.
page 5.
Fig. 5
2a
3.
Put the pump intake in a grounded pail of water or
solvent.
4.
Start the pump at its lowest pressure.
5. T
rigger the gun into the original pail. When solvent
appears, release the trigger
6.
Now trigger the gun into the solvent pail. Circulate
the fluid until the system is thoroughly flushed.
7.
Follow the
Pressure Relief Procedure
.
, page 5.
Page 9
Service
CAUTION
Do not attempt to install an old style needle in this
gun. The front of the new needle is marked with a +
below the Graco symbol.
Notes:
Use Needle Kit 235–474.
Use all the new parts for the best results. Parts
included in the kit are shown with one asterisk, (2a*).
Keep parts very clean. Dried paint or other contami
nants cause friction which causes parts to wear faster
-
Needle Replacement.
WARNING
To
reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 5.
4. Insert
.
Fig. 7
a punch into the rear of the gun and tap it to
push the needle (2c*) out the front of the gun. See
Fig. 7.
2c
02350
1.
Follow the
2.
Remove the hose, tip guard, spray tip and gasket.
3.
Remove the dif
Remove the screw (12), pivot pin (1
(8). See Fig. 6.
Lubricate,
to 20–25 ft–lb (27–34 N.m)
Pressure Relief Procedure
fuser/seat (2a*) and gasket (2b*).
1), and trigger
then torque
11
, page 5.
2b*
2a*
Fig. 6
8
12
02349
5.
Clean the internal passages of the gun.
6.
Grease the rings (A) of the new needle (2c*). See
Fig. 8.
A
Fig. 8
Page 10
7.
Slide the rear of the needle (2c*) into the front of
the gun. Slide the tool (B), provided with the repair
kit, into the gun, around the needle. Lightly tap the
tool with a hammer or lightly press the tool against
a flat surface to seat the needle. See Fig. 9.
Remove the tool.
CAUTION
T
apping or pressing the tool too hard may jam the
tool and damage the needle.
B
2c
Service
8.
Grease the end of the needle.
9.
Grease the dif
gasket (2b*) on the dif
the assembly into the fluid housing (7). T
20–25 ft-lb (27–34 N.m). See Fig. 6.
10.
Install the trigger (8), pivot pin (1
See Fig. 6.
NOTE:
fuser/seat threads. Place the new
fuser/seat (2a*) and screw
orque to
1) and screw (12).
No needle or trigger adjustment is needed.
Fig. 9
02351
10
308-235
Page 11
Parts
11
3
9
8
7
6
12
13
2
2
2c*
2b*
2a*
4
1
2d*
1
Lubricate,
torque to 20-25 ft-lb
1
(27-34 N.m)
2
Lubricate
T
orque to 30-40 in-lb
(3.4–4.5 N.m)
3
then
14
15
19
4
Purchase
separately
18
01468
Model
235–459, Series D
Model 237–691, Series B
ncludes RACr IV DripLess
Includes items 2 to 19 as indicated by model number
t T
ip Guard.
.
Model 235–457, Series C
Includes the Standard (non-reversing) DripLess
T
ip Guard.
t
Includes items 2 (not 2d) to 17 as indicated by model
number.
Model 235–458, Series C
Includes the Standard (non-reversing) DripLess
T
ip Guard.
Includes items 1 to 17 as indicated by model number
warrants all equipment manufactured by it and bearing its name to be free from defects in material and workmanship on
the date of sale
warranty,
tive.
ommendations.
This warranty does not cover
misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of
non–Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility with Graco
equipment of structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, instal
lation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor
for verification of the claim. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The
equipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any
defect in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts,
labor and transportation.
DISCLAIMERS AND LIMITATIONS
The terms of this warranty constitute purchaser’s sole and exclusive remedy and are in lieu of any other warranties (express or
implied),
liabilities, including product liabilities, based on negligence or strict liability
tial damages or loss is expressly excluded and denied. In no case shall Graco’
Any action for breach of warranty must be brought within two (2) years of the date of sale.
EQUIPMENT NOT COVERED BY GRACO WARRANTY
Graco makes no warranty
respect to accessories, equipment, materials, or components sold but not manufactured by Graco. These items sold, but not
manufactured by Graco (such as electric motor
Graco will provide purchaser with reasonable assistance in making any claim for breach of these warranties.
Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment proven defec
This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’
including warranty of merchantability or warranty of fitness for a particular purpose
Graco Warranty and Disclaimers
by an authorized Graco distributor to the original purchaser for use. As purchaser’s sole remedy for breach of this
s written rec-
, and Graco shall not be liable for
, and disclaims all implied
warranties of merchantability and fitness for a particular purpose
, switches, hose, etc.) are subject to the warranty
, any malfunction, damage or wear caused by faulty installation,
, and of any non–contractual
. Every form of liability for direct, special or consequen
s liability exceed the amount of the purchase price.
, with
, if any
, of their manufacturer
.
-
-
-
All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
16
Foreign Offices:
308-235
Belgium, Canada, England, Korea, Switzerland, France, Germany
Sales Offices:
GRACO INC.P.O. BOX 1441
PRINTED
IN U.S.A. 308–235 December 1992, Revised February 1998
Atlanta, Chicago, Detroit, Los Angeles
MINNEAPOLIS, MN
, Hong Kong, Japan
55440–1441
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