Graco Hydra-Clean 308511J Operation manual

Hydra-CleanRGun
For use in pressure washing applications with water and cleaning solutions only.
5000 psi (280 bar, 28.0 MPa) Maximum Working Pressure
Part No. 803350 Brass Body
Part No. 804589
Part No. 15T283
4500 psi (314 bar, 13.4 MPa) Maximum Working Pressure
Part No. 803351 Stainless Steel Body
Part No. 15T282
Instructions–Parts List
308511J
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Model 803351 Shown

2 308511
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Information 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
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.

3308511
WARNING
SKIN INJECTION HAZARD
Spray from the gun/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 might look like just a cut, but it is a serious injury. Get immediate
surgical treatment.
DDo not point the gun at anyone or at any part of the body.
DDo not put your hand or fingers over the spray tip/valve nozzle.
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.
DAlways have the tip guard and the trigger guard on the gun/valve when spraying/dispensing.
DBe sure the gun trigger safety operates before spraying.
DLock the gun trigger safety when you stop spraying.
DFollow the Pressure Relief Procedure on page 4 if the spray tip clogs and before cleaning,
checking or servicing the equipment.
DTighten all fluid connections before operating the equipment.
DCheck the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.
Permanently coupled hoses cannot be repaired; replace the entire hose.
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.
DIf there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing/dispensing 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 sprayed/dispensed.
DKeep the spray/dispense area free of debris, including solvent, rags, and gasoline.
DBefore operating this equipment, electrically disconnect all equipment in the spray/dispense area.
DBefore operating this equipment, extinguish all open flames or pilot lights in the spray/dispense
area.
DDo not smoke in the spray/dispense area.
DDo not turn on or off any light switch in the spray/dispense area while spraying/dispensing or while
operating if fumes are present.
DDo not operate a gasoline engine in the spray/dispense area.
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.

4 308511
Operation
Pressure Relief Procedure
WARNING
SKIN INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected 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 spraying,
Dcheck or service any of the system equipment,
Dor install or clean the spray tip.
1. Engage the gun trigger safety latch.
2. Turn the gas engine or electric motor off.
3. On a gas engine, remove the ignition cable from
the spark plug. On electric powered equipment,
disconnect the power supply. On air powered
equipment, disconnect the air supply.
4. Shut off the water supply.
5. Disengage the gun trigger safety latch and trigger
the gun to relieve pressure. Then, engage the
safety latch again.
6. If you are not going to use a gasoline powered
pressure washer again before storing it (even
overnight) or transporting it, close the fuel shutoff
valve.
Trigger Safety Latch
Always engage the gun safety latch whenever you
stop cleaning, even for a moment. The latch must be
pulled fully up to make the gun inoperative. Failure to
properly set the safety latch can result in accidental
triggering of the gun. See Fig. 1.
Fig. 1
TRIGGER SAFETY LATCH SHOWN ENGAGED
TRIGGER SAFETY LATCH SHOWN DISENGAGED
04612

5308511
Service
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 4.
NOTE: The number in parentheses in the text corre-
spond to those on the Parts Drawings on pages 6
through 9.
Valve Replacement
Models 803350, 803351, 15T282, and 15T283
1. Remove the screws that hold the left hand side-
plate (1) and the right hand sideplate (23) together.
Separate the two sideplates. Remove the as-
sembled parts from the inside of the gun.
2. Press the trigger pin out of the valve body (14) and
remove the trigger (3).
3. Clamp the valve body in a vise.
4. Unscrew the plug (16), and the retaining nut (7)
from the valve body (14).
5. Remove the washer (17), spring (18), ball (19),
o-ring (21), seat (20), rod (10), backup ring (8),
and o-ring (9) from the valve body.
6. To install the new valve:
a. Install the o-ring (21) on the seat (20). Grease
the o-ring. Push the seat (and o-ring) into the
valve body (14) from the back side. (The seat
must be installed with the chamfered seat
being put into the valve body facing the ball.)
b. Drop the ball (19) into the valve body (on top
of the previously installed seat). Drop the
spring (18) on top of the ball.
c. Install a new washer (17) on the plug (16).
Screw the plug into the valve body and tighten
securely.
d. Install an o-ring (9) into the valve body and
backup ring (8) on the retaining nut (7).
Grease the o-ring. Grease the outside of the
rod (10) and install through the center of the
retaining nut. The rod must be installed with
the rounded end out toward the trigger.
e. Screw the actuator nut into the valve body and
tighten securely.
7. Reinstall the trigger.
8. Reassemble the left hand sideplate and right hand
sideplate with the seven screws.
Valve Body Replacement
1. Follow steps 1–5 under Valve Replacement.
2. Remove the outlet (4) and inlet (13) from the valve
body (14). Remove the plug (15) from the valve
body.
3. Install the plug (15) into the valve body using pipe
thread sealant on the threads. Tighten the plug
securely.
4. Install an outlet (4) and inlet (13) into the valve
body using pipe thread sealant on the threads.
TIghten both securely.
5. Follow steps 6–8 under Valve Replacement.