Graco FinishPro 390 Repair Electrical Manual

NO
If motor is hot, let
cool and retest, if
step 4 still shows an
open replace motor.
The motor has a
defective
thermistor switch.
See pages 12 for the steps and illustrations.
NO
See step 4.
Is there
continuity
through the
thermistor
wires?
See step 5
Does the
motor run?
See Motor Test
YES
See step 1.
Do you have
over 100 AC
volts?
YES
See step 3.
Is there over
100 DC volts?
YES
YES
See ON/OFF
Switch Test
.
NO
Replace
Pressure Switch
Replace Control Board.
No
FinishPro 390
288841 Control Board
Airless Motor will not run
See step 2. Do
you have over
100 AC volts?
NO
YES
Is the fuse open?
Replace Control Board.
No
Before replacing
the fuse check
the motor for a short.
YES
12

Graco FinishPro 390 Specifications

General

Brand	Graco
Model	FinishPro 390
Category	Paint Sprayer
Language	English