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Basic Troubleshooting
42 313316E
Basic Electrical
See wiring diagram, page 82
1. Electric supply. Meter must read
105-130 Vac for 110-120 Vac models
and 210-255 Vac for 230 Vac models.
Reset building circuit breaker, replace building fuses.
Try another outlet.
2. Extension cord. Check extension
cord continuity with volt meter.
Replace extension cord. Use shorter extension cord.
3. Sprayer power supply cord. Inspect
for damage such as broken
insulation or wires.
Replace power supply cord. See page 79.
4. Fuse. Check replaceable fuse on
control board (next to ON/OFF switch).
Replace fuse after completing motor inspection.
See page 81.
5. Motor leads are securely fastened
and properly connected to control
board.
Replace loose terminals; crimp to leads. Be sure
terminals are firmly connected.
Clean circuit board terminals. Securely reconnect leads.
6. Motor thermal switch. Yellow motor
leads must have continuity through
thermal switch.
Replace Motor, page 79.
7. Brush cap missing or loose brush
lead connections. Brush length must
be 1/4 in. (6mm).
Replace Motor, page 79.
8. Motor armature commutator for burn
spots, gouges and extreme
roughness.
Replace Motor, page 79.
9. Motor armature for shorts using
armature tester (growler) or perform
spin test, page 73.
Replace Motor, page 79.
10. Pressure control not plugged in
to control board.
Insert pressure control connector into control board.
Problem
What To Check
(If check is OK, go to next check)
What To Do
(When check is not OK, refer to this column)