21
Maintenance
Troubleshooting
PROBLEM
POSSIBLE CAUSE
SOLUTION
ENGINE WILL
NOT RUN
No fuel
Replenish supply.
Low battery
Charge battery.
Poor battery cable connection
Clean battery terminals and check cables.
Refer to provided engine manual for additional troubleshooting.
NO WATER FROM
PRESSURE
NOZZLE
Pressure nozzle clogged
Clean pressure nozzle.
Inlet water screen clogged
Clean.
Pumping sucking air
Fill the detergent container. Check for loose hose
clamps or fittings.
POOR OR NO
DETERGENT
FLOW
Low detergent level
Replenish supply.
Detergent screen clogged
Clean.
Detergent metering valve not opening Check that handle or knob is not slipping on shaft.
Pressure nozzle clogged
Clean.
LOW PRESSURE
FROM SPRAY
NOZZLE.
Inlet clogged
Clean
Spray nozzle worn or incorrect size
Replace.
Inadequate water supply
Increase water supply.
Pump sucking air
Fill the detergent container. Check for loose hose
clamps or fittings.
UNLOADER
VALVE CYCLES
WHEN TRIGGER
GUN IS OPEN
OR CLOSED
Air in system
Open and close trigger gun several times.
Defective unloader valve
Repair or replace.
Water leak between unloader valve
and trigger gun.
Check fittings, hose and trigger gun for leaks. Repair
or replace.
BURNER
WILL NOT IGNITE
WHEN TRIGGER
GUN IS OPEN
No fuel
Replenish supply.
Adjustable thermostat set too
low Defective pressure switch
Electrodes are dirty or out of adjust-
ment No AC generator output
Raise temperature setting. Repair or replace.
Refer to
OIl Burner Manua
l provided with machine.
Check AC generator.
BURNER
SMOKES OR
HAS
OBNOXIOUS
ODOR
Air bands need to be adjusted
Improper fuel
Readjust. Refer to
Oil Burner Section
under
Instal-
lation
.
Use kerosene, #1 Grade Home Heating Oil, #1 or #2
Diesel Fuel.
DO NOT USE GASOLINE.
Hotsy 1200 Operator’s Manual 8.914-366.0 - AL