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15
operation
PL3500
4.5
preSSure relIef proceDure
Be sure to follow the Pressure Relief Procedure
when shutting the unit down for any purpose,
including servicing or adjusting any part of the
spray system, changing or cleaning spray nozzles,
or preparing for cleanup.
1. Lock the spray gun by pushing the gun trigger lock to the
locked position.
2. Set the pressure to minimum by turning the pressure
control knob fully counterclockwise.
3. Turn the relief valve (4) to PRIME (
k
circulation).
4. Move the throttle lever to the slow position.
5. Turn the engine switch to the OFF position.
6. Unlock the gun by pushing the gun trigger lock to the
unlocked position (refer to spray gun manual).
7. Hold the metal part of the gun firmly to the side of a metal
waste container to ground/earth the gun and avoid a build
up of static electricity.
8. Trigger the gun to remove any pressure that may still be
in the hose.
9. Lock the gun by pushing the gun trigger lock to the locked
position (refer to spray gun manual).
4.6
operATINg The froNT cASTer
i
The front caster on the cart is designed to track
the sprayer in either a straight line or allow free
motion.
Standing behind the sprayer, the trigger on the
left handle of the cart controls the operation of
the front caster.
1. To lock the front caster in the straight line position,
squeeze then release the caster trigger and move the
sprayer forward.
2. To allow free motion of the front caster, squeeze and hold
the caster trigger.
4.7
cleANINg A cloggeD TIp
i
If the spray pattern becomes distorted or stops
completely while pulling the trigger, perform the
steps below.
1. Turn the relief valve to PRIME (
k
circulation).
2. If the tip clogs, rotate the tip handle 180° until the arrow on
the handle is facing the opposite of the spray direction and
the handle clicks in the reverse position (Fig. 9).
3. Turn the relief valve to SPRAY (
p
spray).
4. Trigger the gun once so that the pressure can blow the
clog out. NEVER use the tip in the reverse position for
more than ONE trigger pull at a time. This procedure can
be repeated until the tip is free of clogging.
The flow from the spray tip is at very high
pressure. Contact with any body part may be
dangerous. Do not place finger on gun outlet.
Do not point the gun at any person. Never
operate the spray gun without the proper tip
guard.