Pressure Relief Procedure
Pressure Relief Procedure Grounding
Follow the Pressure Relief Procedure whenever you see this symbol.
This equipment stays pressurized until pressure is manually relieved. To help prevent serious injury from pressurized fluid, such as skin injection, splashing fluid and moving parts, follow the Pressure Relief Procedure when you stop spraying and before cleaning, checking, or servicing the equipment.
1.Engage trigger lock.
2.Turn engine ON/OFF switch to OFF.
3.Move pump switch to OFF and turn pressure control knob fully counterclockwise.
4.Disengage trigger lock. Hold metal part of gun firmly to side of grounded metal pail, and trigger gun to relieve pressure.
5.Engage gun trigger lock.
6.Turn prime valve down to DRAIN position. Leave prime valve down until ready to spray again.
7.If you suspect the spray tip or hose is clogged or that pressure has not been fully relieved after follow- ing the steps above, VERY SLOWLY loosen tip guard retaining nut or hose end coupling to relieve pressure gradually, then loosen completely. Clear hose or tip obstruction.
The equipment must be grounded to reduce the risk of static sparking. Static sparking can cause fumes to ignite or explode. Grounding provides an escape wire for the electric current.
To ground sprayer: Attach sprayer grounding clamp to earth ground.
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Air and fluid hoses: Use only electrically conductive hoses with a maximum of 500 ft. (150 m) combined hose length to ensure grounding continuity. Check elec- trical resistance of hoses. If total resistance to ground exceeds 29 megohms, replace hose immediately.
Spray gun: Ground through connection to a properly grounded fluid hose and pump.
Solvent pails used when flushing: Follow local code. Use only conductive metal pails, placed on a grounded surface. Do not place the pail on a nonconductive sur- face, such as paper or cardboard, which interrupts grounding continuity.
To maintain grounding continuity when flushing or relieving pressure: Hold metal part of the spray gun firmly to the side of a grounded metal pail, then trigger the gun.
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