17
Maintenance
Troubleshooting
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
PRESSURE
WASHER WILL
NOT RUN
Pump switch in OFF position
Place switch in ON position.
Power supply disconnected
Connect power supply.
Fuse blown or circuit breaker
tripped in electrical supply line
Replace fuse or reset circuit breaker. Use only circuits
of adequate capacity.
Motor circuit overload tripped
Allow sufficient time for motor to cool down. Place
pump switch in ON position.
PRESSURE
WASHER RUNS
BUT WON’T SPRAY
Trigger of trigger gun released
Squeeze trigger.
Water supply not turned on
Open water supply valve.
Clogged pressure nozzle
Clean pressure nozzle opening.
Inlet water screen clogged
Check screen and clean if necessary.
Pump sucking air
Fill the detergent container and check for loose hose
clamps or fittings.
LOW SPRAY
PRESSURE
AT NOZZLE
Inadequate water supply
Fully open faucet. Check for kinked or damaged
hose. Use 5/8" minimum hose. Check for debris
clogging inlet screen.”
Partially clogged or damaged
pressure nozzle
Clean or replace.
Air being drawn through
detergent inlet line
Refill detergent container. Ensure that pick-up screen
is fully immersed.
UNEVEN SPRAY
PATTERN
Partially clogged or damaged
pressure nozzle
Clean or replace.
PRESSURE
WASHER WILL
NOT PRODUCE
HOT WATER
Burner switch in OFF position
Place switch in ON position.
Inadequate fuel supply
Check fuel supply.
Pump switch turned off
Pump must be running before burner will light.
MACHINE
SMOKES
WHILE
BURNER UNIT
IS RUNNING
OR
UNIT SMOKES AT
COLD-START
ONLY WHEN
BURNER
IS OFF
Improper fuel or water in fuel
Drain tank and replace contaminated fuel
Fuel pressure is low <140 psi for
burner
Adjust fuel pump pressure to specifications
Burner nozzle is plugged or dirty
Replace nozzle. Check parts breakdown
for nozzle size
Burner nozzle spray pattern is
faulty
Replace nozzle. Check parts breakdown
for nozzle size
Heavy accumulation of soot on
coils and burner assembly
Remove coils and burner assembly,
clean thoroughly Call local dealer
Misaligned electrode setting
Realign electrodes to specifications
Obstruction in smoke stack
Check for insulation blockage or other
foreign objects
Low engine RPM
Increase RPM to correct specs. See serial plate
Fuel Pressure is too high for clean
burn (fuel PSI above 140 and
below 200) and smokes when
burner is off
Reduce fuel pressure PSI/Increase air band set for
cleaner without max water heat loss
MANUAL, OPERATOR, HOTSY, STAT ELECTRIC, OIL 8.916-831.0 - D
