Troubleshooting - Graco RTX-650 Repair Manual

Problem
Sprayer won't run
Pump won't pump material
Material runs out of bottom of sprayer
onto floor
No air flowing from gun
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Troubleshooting

Cause
Power switch not on
No power at wall outlet
Wrong size generator
Too many items on same circuit
Extension cord too long or wrong
gauge
Breaker tripped
Blown motor fuse
Failed motor or motor shield
Mix too thick
Plugged gun
RotoFlex II pump worn out
Pump cold or material frozen in pump Move pump to warm room and allow
Material in hose
RotoFlex II pump worn out
Gun air valve closed
Gun needle plugged
Lines not connected
Damaged hose
Worn compressor
Troubleshooting
Solution
Turn switch on.
Check outlet by seeing if light in the
plug is illuminated. If not, try another
outlet.
Use a 3500 watt or larger generator.
Refer to Generator Requirements,
page 6.
Unplug other items from circuit
Use a different extension cord. Refer
to Grounding and Electric Require-
ments, page 6.
Reset breaker.
Check to see if fuse needs to be
replaced, page 12.
Replace motor or motor fuse.
Add water to thin material. Use Mate-
rial Thickness Gauge.
Relieve Pressure, page 6. Remove
gun from hose. Clean gun.
Replace hose. Recommended hose
replacement - once a year or every
3000 gallons.
it to warm up or run hot water through
sprayer.
Remove material hose from outlet
and run until material flows.
Replace hose.
Open gun air valve.
Clean needle and retry.
Check all connections to gun and
hoses.
Replace hose.
Replace compressor.
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