12 308-490
Troubleshooting
WARNING
INJECTION HAZARD
T
o 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 WHA
T T
O CHECK
If check is OK, go to next check
WHA
T T
O DO
When check is not OK refer to this column
Building circuit breaker opens
Check all electrical wiring for damaged
insulation.
Replace any damaged wiring.
Check for other electrical appliances on
circuit.
Shutdown other electrical appliances on
circuit.
Check position of 10–12 (Lo–High) amp
switch.
Put switch in 10 (LO) position.
Sprayer will not run
Check pressure control knob setting. Motor
will not run if it is at minimum setting (fully
counterclockwise).
Slowly increase pressure setting to see if
motor starts.
Check for a clogged spray tip. Refer to
separate gun or tip instruction manual.
Relieve
pressure. Refer to separate gun or tip
instruction manual for tip cleaning.
Check extension cord for visible damage.
Use a volt meter or test lamp at extension
cord outlet to check.
Replace extension cord.
Check sprayer power supply cord for visible
damage such as broken insulation or wires.
Replace power supply cord.
Check electrical supply with volt meter
.
Meter should read 210–250 V
AC.
Reset building circuit breaker; replace build
-
ing fuse. T
ry another outlet.
Check for motor damage. Remove drive
housing assembly
. See motor test on page
19. T
ry to rotate fan by hand.
Replace motor (1) if fan won’t turn.
Check for locked motor rotor
. Unplug cord
and try to turn fan blades with a screwdriver
.
Repair gear train or pump, if damaged. Thaw
the
sprayer
, if frozen; See the NOTE on page
13. Replace the pressure control,
if damaged.
Check for shorted motor
. Use ohmmeter to
check for shorts between motor leads or
between motor leads and motor frame.
Inspect for damage to motor brush leads.
Replace motor
, if necessary.
Defective pressure control transducer.
Replace pressure control transducer
. See
page 20.
Poor spray pattern
Check for worn spray tip.
Relieve pressure and then replace the tip.
See the separate gun or tip manual.
NOTE:
T
roubleshooting is continued on the next page.
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