Graco RTX 1500 248201, Repair And Parts Manual

Page: 27 / 36

Troubleshooting
310645H 27
Troubleshooting
Pressure Relief, page 7
Problem Cause Solution
Sprayer won’t run or stops intermit-
tently Power switch not on Turn switch on.
No power at wall outlet Check outlet by plugging in another
appliance. If appliance does not
work, try another outlet.
Wrong size generator Use a 7500 watt or larger generator.
Refer to Generator Requirements,
page 8.
Temperature too cold Allow unit to warm up.
Too many items on same circuit Unplug other items from circuit.
Internal thermal switch tripped Self-resetting. Allow unit to cool down
15 minutes and restart. Usually
occurs when wrong size extension
cord is used.
Extension cord too long or wrong
gauge Use a 12 gage extension cord or
remove extension cord. Refer to
Grounding and Electric Require-
ments, page 7.
Breaker tripped Reset breaker.
Pump won’t pump material or low
output Air lock Open air valve on gun.
Mix too thick Add water to thin material. Use Mate-
rial Thickness Gauge.
Loose fittings Check and retighten all fittings.
Plugged gun Relieve Pressure, page 7. Remove
gun from hose. Clean gun.
RotoFlex HD Pump worn out Replace hose.
Pump cold or material frozen in pump Move pump to warm room and allow
it to warm up or run hot water through
sprayer.
Sensor is bad Replace, page 26
Check air system for leaks Remove shroud and examine for air
leaks
Loose wire Remove shroud and examine wiring
No air pressure Rebuild compressor
Soft start won’t work/pump, always
loaded Sensor is bad Change sensor, page 26
Air leak due to bad seal keeps valve
open Replace seal
Normal soft start system delay Release trigger for 10-15 seconds.
Retry.
Switch is not operating properly Replace switch
Damaged solenoid valve on cylinder Check gun supply, hose and sprayer
for leaks
AIr leak