OPERATING INSTRUCTIONS
Start-Up
Refer to the “Safety Precautions” pgs.
Locate the Safety Decals on your unit and heed their warnings.
Never look directly into the nozzle. High pressure water creates a risk of severe injury.
1.With the gun locked in the “OFF” position, point the trigger gun away from yourself or anyone else. Ensure the water supply is completely turned on.
2.Disengage the safety
3.Be certain the trigger gun remains in an open position while starting the engine. Brace yourself as the gun will kickback from the high pressure created by the pump once the engine has started.
4.Steady the unit during engine
5.Once the engine has started, perform the following procedures with the gun open:
Inspect for system oil leaks and fuel leaks. If a fuel leak is found, turn unit off immediately. See “Fire & Ventila- tion Precautions” pg. 4. Be sure that all damaged parts are replaced and that the mechanical problems are corrected prior to operation of the unit. If you require service, contact Graco Customer Service.
Inspect high pressure hoses for kinking, cuts and leaks. If a cut or leak is found, do not touch hose at leak. Turn unit off immediately. Replace hose before restarting the unit. See “Miscellaneous Safety Pre- cautions” pg. 5. Be sure that all damaged parts are replaced and that the mechanical problems are cor- rected prior to operation of the unit. If you require service, contact Graco Customer Service.
6.Trigger the gun several times. Be certain to lock the trigger gun in the “OFF” position whenever changing the quick connect nozzles.
Notice
Do not allow unit to operate in bypass mode (with trigger closed) for more than three minutes without triggering the gun. Failure to follow this simple rule can cause premature failure of pump packing seals, resulting in costly pump repair.
Because your pressure washer delivers a high pressure spray and a variety of spray patterns, there are many cleaning jobs that can be done without the use of de- tergents. If a cleaning agent is required, see “Cleaning With Detergents” pg. 13 for the correct procedures.
notice
Do not allow spray pattern to remain on a fixed area for an extended period of time. Possible damage may occur to the area.
OPERATING INSTRUCTIONS
Cleaning with Detergents
Refer to “Detergent Cleaning Precautions” pg. 4 before working with detergents. Be certain to wear protective safety attire.
Prepare detergent solution according to label directions. Never pump acids, alkaline, abrasive fluids or solvents through the unit.
Some units are equipped with adjustable detergent knobs. Locate the clear vinyl hose which leads to the pump head.
•If your injector is equipped with an adjustment knob on the pump head, you may adjust the amount of detergent desired by turning the knob completely counterclockwise to set at the maximum siphon rate.
•If your injector is not equipped with an adjustment knob, the detergent ratio is preset and cannot be adjusted.
1.Immerse the detergent strainer into the detergent solution to allow detergent to siphon.
2.With the trigger gun locked in the “OFF” position, secure
Note: This injection system is designed to apply deter- gents under low pressure only. It will not allow deter- gent solutions to be introduced into the system unless the nozzle assembly is in the low pressure detergent mode.
3.To apply solution; unlock the trigger gun and squeeze the trigger. In a few moments a detergent/water mixture will exit the low pressure nozzle. Start spraying the lower portion of the surface being cleaned and move up, using long overlapping strokes. Applying from the bottom up helps avoid streaking. Allow to soak briefly. Do not allow detergent solution to dry on the surface. (Avoid working on hot surfaces or in direct sunlight to minimize the chances of the detergent drying, which may result in damaging painted surfaces.) Be certain to rinse a small section at a time.
4.To rinse; lock the trigger gun in the “OFF” position, securely
5.Siphon a gallon of water through the low pressure detergent injection system after each use. This prevents the possibility of corrosion or detergent residue causing mechanical problems during the next use.
Shutdown
1.Turn engine “OFF” as directed in the engine manual.
2.Turn the water supply “OFF”.
3.Pointing the gun in a safe direction, trigger gun momentarily to relieve any trapped pressure.
4.Once pressure is relieved, disconnect the nozzle assembly.
5.Disconnect and drain gun, wand and hoses.
6.Wipe unit clean and store with gun, wand and hoses in a safe,
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