TROUBLESHOOTING
Symptom
•Motor does not start.
•Motor stops.
•Working pressure too high or
uneven spray pattern.
•Working pressure too low.
•Irregular or pulsating working
pressure.
Probable Cause
•Motor not connected to power
supply.
•A fuse has blown or breaker has
tripped.
•Thermal overload tripped.
•Pump is frozen.
•A fuse has blown or breaker has
tripped.
•Thermal overload tripped.
•Spray nozzle partly blocked.
•Spray nozzle worn.
•Air in pump.
•Unloader valve not adjusted
properly.
•Foreign material in unloader.
•Drive belts are too loose.
•Air being drawn in through soap
control.
•Air in pump.
•Foreign material in pump.
•Water supply of inadequate capacity.
•Air being drawn in through soap
control.
Correction
•Connect the motor to the power
supply.
•Change the fuse or reset the
breaker.
•Allow the motor to cool. Check that
the operating pressure is not too high
and that the power supplied to the
motor matches that required.
•Allow the pump to thaw.
•Change the fuse or reset the
breaker. Check that the power
supplied to the motor matches that
required.
•Allow the motor to cool. Check that
the operating pressure is not too high
and that the power supplied to the
motor matches that required.
•Remove and clean the nozzle.
•Replace the nozzle.
•See
Purging Air
subsection under
OPERATION.
•See
Pressure Adjustment
subsection
under OPERATION.
•Service unloader.
•Tighten belts or replace if stretched.
•Fill soap container with enough soap
to cover soap strainer.
•See
Purging Air
subsection under
OPERATION.
•Service pump and check strainers.
•Adjust float level higher.
•Fill soap container with enough soap
to cover soap strainer.
