Graco 395/490/495/595 Paint Sprayer User Manual


 
Troubleshooting
36 334530A
6.Perform Field Short Test: Test at
large 4-pin motor field connector.
There should not be continuity from
pin 4, the ground wire, and any of
the remaining 3 pins. If motor field
connector tests fail, replace motor.
7.Check Motor Thermal Switch:
Unplug thermal wires. Set meter to
ohms. Meter should read 100k
ohms.
8.Reconnect motor connector(s) to
control board socket(s). Connect
power, turn ON/OFF switch ON and
control knob to 1/2 turn clockwise. If
motor does not run, replace control
board.
Problem What to Check How to check
-
1-3 ohms