Landa HOT 3-300, Operator'S Manual

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8.917-208.0 • HOT Operator Manual • Rev. 03/12
PRESSURE
W
ASHER
T
roub
leshooting Guide
18
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
BURNER LIGHT WILL
NOT LIGHT Disconnected or short in electrical
wiring All wire contacts should be clean and tight.
No breaks in wire.
Burner motor thermal protector
tripped If tripped, check voltage, connections, and
extensions for cause. Check fuel pump shaft
rotation for binding causing motor to over-
heat.
Flex-coupling slipping on fuel
pump shaft or burner motor shaft Replace if needed.
ON-OFF Switch defective Check continuity through burner switch.
Heavy sooting on coil and burner,
can cause interruption of air fl ow
and shorting of electrodes Clean as required.
Improper electrode setting Clean and test according to diagram in Op-
erators Manual.
Fuel not reaching combustion
chamber Check fuel pump for proper fl ow. Check sole-
noid fl ow switch on machines with spray gun
control, for proper on-off fuel fl ow control.
Clogged burner nozzle Replace.
Water not turned on Turn on water to activate burner fl ow switch.
Fuel solenoid malfunction Remove, test for continuity and replace as
needed.
Fuel solenoid malfunction Replace if needed.
Pressure switch malfunction Test for proper operation. Replace if needed.
PUMP MOTOR STOPS
AFTER A FEW
MINUTES OF
OPERATION OR
STARTS SLOW Insuffi cient voltage Use heavier drop cord and check voltage at
receptacle. Check name plate for amperage
draw.
Plugged nozzle Remove and clean nozzle. Turn on water
pump, fl ush lines, and replace nozzle.
Wrong spray nozzle See serial plate for minimum nozzle size.
Automatic overload switch tripped Allow motor to cool - then push Red reset
button.
Motor wet Allow to dry.
Short in electrical wiring Wire contacts should be clean and tight. No
breaks in wires.
Coil liming up causing excessive
pressure See section on Preventative Maintenance.
Water pump low or out of oil caus-
ing the pump to bind up Fill to correct level.