Troubleshooting - Graco 231–406, Series A Instructions-Parts List Manual

INJECTION HAZARD
To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the
Pressure Relief Procedure on page 8.
Check everything in the guide before disassembling the sprayer.
TYPE OF PROBLEM
Building circuit breaker opens
Sprayer will not run
Poor spray pattern
NOTE: Troubleshooting is continued on the next page.

Troubleshooting

WARNING
WHAT TO CHECK
If check is OK, go to next check
Check all electrical wiring for damaged
insulation.
Check for other electrical appliances on
circuit.
Check position of 15–20 (Lo–High) amp
switch.
Check pressure control knob setting. Motor
will not run if it is at minimum setting (fully
counterclockwise).
Check for a clogged spray tip. Refer to
separate gun or tip instruction manual.
Check extension cord for visible damage.
Use a volt meter or test lamp at extension
cord outlet to check.
Check sprayer power supply cord for visible
damage such as broken insulation or wires.
Check electrical supply with volt meter.
Meter should read 105–125 VAC.
Check for motor damage. Remove drive
housing assembly. See motor test on page
19. Try to rotate fan by hand.
Check for locked motor rotor. Unplug cord
and try to turn fan blades with a screwdriver.
Check for shorted motor. Use ohmmeter to
check for shorts between motor leads or
between motor leads and motor frame.
Defective pressure control transducer.
Check for worn spray tip.
WHAT TO DO
When check is not OK refer to this column
Replace any damaged wiring.
Shutdown other electrical appliances on
circuit.
Put switch in 15 (LO) position.
Slowly increase pressure setting to see if
motor starts.
Relieve pressure. Refer to separate gun or tip
instruction manual for tip cleaning.
Replace extension cord.
Replace power supply cord.
Reset building circuit breaker; replace build-
ing fuse. Try another outlet.
Replace motor (1) if fan won't turn.
Repair gear train or pump, if damaged. Thaw
the sprayer, if frozen; See the NOTE on page
13. Replace the pressure control, if damaged.
Inspect for damage to motor brush leads.
Replace motor, if necessary.
Replace pressure control transducer. See
page 20.
Relieve pressure and then replace the tip.
See the separate gun or tip manual.