Advanced Troubleshooting
24
312004B
General Problem: Circuit Breaker is Tripping
Specific Problem
Cause
Solution
Building circuit breaker opens as
soon as sprayer is turned on.
Sprayer electrical wiring is pinched
or insulation is damaged.
Repair or replace any damaged wiring or terminals.
Securely reconnect wires.
Wires between pressure control
switch and control board are
pinched.
Motor armature is shorting.
Check for shorts using armature tester (growler) or
perform spin test,
Motor Diagnostics
, page 30. If
shorts are evident, replace motor using
Motor Kit
, page
28.
Control board is damaged.
CAUTION:
Do not perform control
board diagnostics until you have
determined the armature is good.
A bad motor armature can burn
out a good motor control board.
See
Control Board Diagnostics
, page 31. Replace
control board if damaged using
Control Board Kit
,
page 28.
Building circuit breaker opens as
soon as sprayer is plugged into
outlet and sprayer is NOT turned
on.
NOTE:
Remove enclosure
mounting screws and pull
enclosure away from drive
housing. Take care not to pull on
leads from electrical cord and
power switch.
Sprayer electrical cord is
damaged.
1.
Unplug sprayer electrical cord.
2.
Disconnect black electrical cord wire at power
switch.
3.
Unplug in-line connection white cord wire.
4.
Plug in electrical cord.
5.
Test voltage between black and white wires. Meter
must read 85 to 130V AC.
6.
Replace electrical cord if no voltage.
SR7, ProX7 and ProX9 - Sprayer
power switch damaged.
1.
Unplug sprayer electrical cord.
2.
Disconnect black control board wire at power
switch.
3.
Check resistance of switch with ohmmeter.
4.
Reading must be infinity with power switch OFF.
5.
Reading must be zero with power switch ON.
6.
Replace power switch if damaged.
Also see
Basic Electrical Problems,
and
Sprayer Wiring Problems
, page 22.
General Problem: Erratic Motor Operation
Specific Problem
Cause
Solution
Sprayer quits after running for 5 to
10 minutes
Electrical outlet is damaged
Reset building circuit breaker or replace building fuse.
Electrical outlet supplying wrong
voltage
Try another outlet. Check electric supply with volt meter.
Meter must read 85 to 130V AC. If voltage is too high,
do not use outlet until corrected.
Also see
Basic Electrical Problems
and
Sprayer Wiring Problems
, page 22.
Motor is overheating
See Motor is hot and runs intermittently in Basic
Troubleshooting, page 20.
Motor is hot and runs
intermittently.
See Motor is hot and runs intermittently in Basic Troubleshooting, page 20.
Summary of Contents for 261800
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