Pressure Relief Procedure; Grounding; Grounding Procedure For Internal Combustion; Engine - Graco GMAX 3400 Operation

Pressure Relief Procedure

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 gas engine ON/OFF siwtch to OFF. For
Convertible Models with electric motor, turn electric
motor ON/OFF switch to OFF, and unplug power
cord to electric motor.
3. Disengage trigger lock. Hold metal part of gun firmly
to side of grounded metal pail, and trigger gun to
relieve pressure.
4. Engage gun trigger lock.
5. Turn prime valve down to DRAIN position. Leave
prime valve down until ready to spray again.
6. If you suspect the spray tip or hose is clogged or
that pressure has not been fully relieved:
a. VERY SLOWLY loosen the tip guard retaining
nut or the hose end coupling to relieve pressure
gradually.
b. Loosen the nut or the coupling completely.
c. Clear the obstruction in the hose or tip.
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Grounding

Grounding Procedure for
Internal Combustion Engine
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.
Air and fluid hoses: Use only electrically conductive
hoses with a maximum of 500ft. (150 m) combined hose
length to ensure grounding continuity. Check electrical
resistance of hoses. If total resistance to ground
exceeds 29 megaohms, replace hose immediately.
Spray gun: Ground through connection to a properly
grounded fluid hose and pump.
Pressure Relief Procedure
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