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TROUBLESHOOTING CHART
I
WARNING
Pressure Relief Procedure
To
reduce the riskof serious bodily injury, including
5.
Hold a metal part of the spray gun firmly to the
fluid injection, splashing in the eyes
or
on the skin,
side
of a grounded metal pail. and trigger the
or
injury from moving parts, always follow this pro- spray gun to relieve pressure.
cedure
whenever
YOU
shut off
the
Pump,
when
6.
Enaaoe the smav aun safetv iatch.
checking
or
servicing any part of the spray system,
7.
Open the drain valve (required in your system),
when installing, cleaning
or
Changing spray tips,
and whenever you stop spraying.
having a container ready to catch the drainage.
8.
Leave the drain valve open until you are ready
to spray again.
"
.
_-
1.
Engage the spray gun safety latch. If vou susmct that the swav tio
or
hose is com-
2.
Shut off the air to the pump.
.I.
p6tely Clogged,
or
that pressure has not been fully
3.
Close
the bleed-type master air valve (required SLOWLY the
air
cap
or
hose end
coupling
relieved after following the steps above,
VERY
4.
Disengage the spray gun safety latch.
and relieve pressure gradually. then
loosen
com-
pletely. Now clear the tip or hose.
in your system).
NOTE: Check all other possible remedies before disassembling pump.
PROBLEM
Pump fails to operate
Pump operates but output low
on both strokes.
Pump operates but output low
on downstroke.
Pump operates but output low
on upstroke.
Erratic or accelerated operation.
CAUSE
Packlng
nut
too tight.
Dirty or worn alr motor.
Inadequate
air
supply or
restricted line.
Clogged fluld hose, gun or tlp.
Drled fluld selzure of
displacement rod.
Clogged fluid
hose.
gun or tip.
restricted line.
Inadequate air supply or
Exhausted fluid supply.
Worn or damaged plston packing.
Worn or darnaged plston packing.
valve.
Held open or worn fluld Intake
Worn or damaged plston packing.
valve.
Held open or worn fluld plston
Exhausted fluid supply.
Broken air motor compression
spring,
Worn
or
damaged piston packlng.
valve.
Held open or worn fluid intake
valve.
Held open or worn fluid plston
SOLUTION
prevent leakage
-
no tlghter.
Tighten Just enough to
Clean, service: see
307-456.
Increase or clean.
Clear.
Disassemble and clean.
Clear.
1
Increase or clean.
Refill.
SeNiCe.
SeNlCe.
Clear. service.
SeNlCe.
Clear.
SBNiCe.
Refill.
SeNlCe:
See
307-456.
service.
Clear, se~ice.
Clear, service.