24 309421
Advanced Troubleshooting
NOTE:
See
Basic Troubleshooting
on page 22 for the 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 but
See
Basic Troubleshooting
page 22.
sprayer is plugged in, but
pump does not cycle.
Basic Mechanical
Problems
Paint is frozen or hardened in pump.
Unplug sprayer from electrical outlet.
NOTE: If frozen, do not try to start sprayer
until completely thawed
, or damage to motor,
control board, and/or drivetrain may occur.
Make sure power switch (B) is OFF. Place
sprayer in warm area for several hours, then
plug in and turn on. Slowly increase pressure
setting to see if motor starts.
If paint hardened in sprayer, replace pump
packings and remove all residue from valves.
See
Pump Service
on page 33.
Motor is damaged.
Remove gear, and try to rotate motor shaft by
hand. See
Motor Diagnostics
on page 32. If
shaft will not turn, replace motor using
Motor
Kit
245063 (see
List of Kits
, page 31).
Yoke is broken, because pump is locked up by
dried paint or worn packings.
Repair as necessary or replace using
Gear/Yoke Repair Kit
245062 (see
List of
Kits
, page 31).
Basic Electrical Problems
Motor is overheated.
Allow to cool for 30 minutes. Retry.
Electrical outlet is damaged.
Reset building circuit breaker or replace
building fuse. Try another outlet.
Check electric supply with volt meter. Meter
must read 85 to 130V AC. If voltage is too
high, do not plug sprayer in until outlet is
corrected.
Control board leads are improperly fastened or
improperly mated.
Replace any loose terminals. Make sure all
leads and harnesses are firmly connected.
Check pressure control harness connection on
front side of drive housing.
Clean control board terminals. Securely
reconnect leads.
Motor brushes are worn.
NOTE:
Brushes do not wear at the same rate on
both sides of motor. Check both brushes.
Check length of brushes. Brush length must
be 0.25 in. (6.4 mm) minimum. If brushes are
worn, replace motor using
Motor Kit
245063
(see
List of Kits
, page 31).
Motor armature commutator is damaged.
Check for burn spots, gouges and extreme
roughness. Have motor shop resurface
commutator if possible, or replace motor using
Motor Kit
245063 (see
List of Kits
, page 31).