User's Manual

Cleanup
3A0245A 15
Troubleshooting
Low or Fluctuating Output
Electrical Short
PROBLEM CAUSE SOLUTION
Motor runs and pump strokes 1. Material supply. 1. Refill hopper and re-prime pump.
2. Loose fittings. 2. Tighten; use thread sealant or
sealing tape on threads if neces-
sary.
3. Intake valve ball and piston ball are
seating
properly.
3. Remove intake and piston valves
and clean. Check balls and seats
for nicks or obstructions; replace
if necessary, page 18. Clean
hopper before using to remove
particles that could clog pump.
4. Leaking around throat packing nut
which may indicate worn or damaged
packings.
4. Replace packing, page 18. Also
check piston valve seat for hard-
ened paint or nicks and replace if
necessary.
5. Pump rod damage. 5. Repair pump.
Motor runs but pump does not
stroke
1. Displacement pump pin (75) (damaged
or missing).
1. Replace pump pin if missing. Be
sure retainer spring (76) is fully in
groove all around connecting rod.
2. Connecting rod assembly (45) for dam-
age.
2. Replace connecting rod assem-
bly.
3. Gears or drive housing. 3. Inspect drive housing assembly
and gears for damage and
replace if
necessary.
PROBLEM CAUSE SOLUTION
Building circuit breaker opens
as soon as sprayer switch is
turned on.
CAUTION
Any short in any part of the
motor power circuit will cause
the control circuit to inhibit
sprayer operation. Correctly
diagnose and repair all shorts
before checking and replacing
control board.
1. All electrical wiring for damaged insula-
tion, and all terminals for loose fit or
damage. Also wires between pressure
control and motor.
1. Repair or replace any damaged
wiring or terminals. Securely
reconnect all wires.
2. Motor armature for shorts. Inspect
windings for burns
2. Replace motor.
3. Motor control board by performing
motor control board diagnostics. If
diagnostics indicate, substitute with a
good board.
3. Replace with a new pressure
control board.