Advanced Troubleshooting
309477F
11
Advanced Troubleshooting
WARNING
Page 4.
General Problem: Motor Does Not Operate
Specific Problem
Cause
Solution
Power switch is on and sprayer
is plugged in; pump does not
cycle
See
Basic Troubleshooting
,
page 9
Basic mechanical problems
Paint is frozen or hardened in
pump
Unplug sprayer from electrical outlet.
If paint is frozen in sprayer
:
•
Do NOT try to start sprayer until completely
thawed or you may damage the motor, control
board, and/or drivetrain.
1. Turn OFF power switch
2. Place sprayer in warm area for several
hours
3. Plug in and turn on sprayer
4. Slowly increase pressure until motor starts
If paint hardened in sprayer
:
1. Replace pump packings
2. Remove all residue from valves
Pump Service
, page 20.
Motor is damaged
Remove gear and try to rotate motor shaft by
hand. See
Motor Diagnostics
, page 19. If shaft
will not turn, replace motor using
Motor Kit
, page
18.
Yoke is broken because pump
is locked up due to dried paint
or worn packings (XR9 only)
Repair or replace using
Gear/Yoke Kit
, page 18.
Repair pump, page 20.
