Specifications

Advanced Troubleshooting
312004B 21
Advanced Troubleshooting
See Basic Troubleshooting first, page 17 for problems that are more easily remedied.
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 17.
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. Project Painter 5 and Project Painter 7 - Turn All-
Control to OFF or STORAGE.
SR7, ProX7 or ProX9 - Turn OFF power switch.
2. Place sprayer in warm area for several hours.
3. Plug sprayer in.
4. Project Painter 5 and Project Painter 7 - Turn
AllControl to Prime/Clean Pump
SR7, ProX7 and ProX9 -
a. Turn on sprayer.
b. Turn prime valve to PRIME position.
If paint hardened in sprayer:
Replace pump packings.
Remove all residue from valves.
Pump Service, page 31.
Motor is damaged. Remove gear and try to rotate motor shaft by hand. See
Motor Diagnostics, page 30. If shaft will not turn,
replace motor using Motor Kit, page 28.
SR7, ProX7 and ProX9 - Yoke is
broken because pump is locked up
due to dried paint or worn
packings
Repair or replace using Gear/Yoke Kit, page 28.
Repair pump. See Pump Service, page 31.