Graco FinishPro II 295 Operation - Repair - Parts page 52

Basic Troubleshooting
Problem
Basic Electrical
See wiring diagram, page 93
52
What To Check
(If check is OK, go to next check)
1. Electric supply. Meter must read
105-130 Vac for 110-120 Vac mod-
els and 210-255 Vac for 230 Vac mod-
els.
2. Extension cord. Check extension
cord continuity with volt meter.
3. Sprayer power supply cord. Inspect
for damage such as broken insula-
tion or wires.
4. Fuse. Check replaceable fuse on
control board (next to ON/OFF switch).
5. Motor leads are securely fastened
and properly connected to control
board.
6. Motor thermal switch. Yellow motor
leads must have continuity through
thermal switch.
7. Brush cap missing or loose brush
lead connections. Brush length must
be 1/4 in. (6mm).
8. Motor armature commutator for burn
spots, gouges and extreme rough-
ness.
9. Motor armature for shorts using
armature tester (growler) or perform
spin test, page 83.
10. Pressure control not plugged in
to control board.
What To Do
(When check is not OK, refer to this column)
Reset building circuit breaker, replace building
fuses. Try another outlet.
Replace extension cord. Use shorter extension cord.
Replace power supply cord. See page 90.
Replace fuse after completing motor inspection.
See page 92.
Replace loose terminals; crimp to leads. Be sure ter-
minals are firmly connected.
Clean circuit board terminals. Securely reconnect
leads.
Replace Motor, page 90.
Replace Motor, page 90.
Replace Motor, page 90.
Replace Motor, page 90.
Insert pressure control connector into control board.
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