Advanced Troubleshooting
313036N
19
Basic electrical problems.
Motor overheated.
Allow motor to cool for 45 minutes. Retry.
Electrical outlet is damaged.
Reset building circuit breaker or replace 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, improp-
erly mated, or
corroded.
Replace any loose terminals. Make sure all leads
and harnesses are firmly connected.
ProLTS 17 and ProLTS 19:
Check pressure
control harness connection on front side of drive
housing.
Clean control board terminals. Securely recon-
nect leads.
Motor brushes are worn.
Check length of BOTH brushes (brushes do not
wear evenly on both sides of the motor). Brush
length must be 0.25 in. (6.4mm). If brushes are
worn replace motor using
Motor Kit,
page
Motor armature commutator
damaged.
Check for burn spots, gouges and extreme
roughness. If damaged or if shorts are evident,
replace motor using
Motor Kit
, page 28.
Fuse is blown.
Find cause for blown fuse before replacing. Turn
the motor fan to check for a locked gear or
pump. Use a continuity meter to check for a short
to ground caused by a pinched wire.
ProLTS 17 and ProLTS 19:
Replace the fuse
with correct fuse kit. See
List of Kits
, page 28.
LTS 15 and LTS 17:
The fuse is not replaceable.
Replace control board. See
List of Kits
, page
Motor armature shorting.
Check for shorts. See
Motor Diagnostics
, page
25. If shorts are evident, replace motor using
Motor Kit
, page 28.
Motor armature open circuit.
Check motor leads for continuity. If open circuit,
check brushes. Use Motor Kit to replace motor.
See
List of Kits
, page 28.
Control board damaged.
CAUTION:
Do not perform
control board diagnostics until
you have determined the
armature is good. A damaged
armature can burn out a good
control board.
See
Control Board Diagnostics
, page 27.
Replace control board if damaged using
Control
Board Kit
, page 28.
Specific Problem
Cause
Solution
Summary of Contents for LTS 15
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