Kärcher SSE-503007A Operator's Manual page 15

PROBLEM POSSIBLE CAUSE
MACHINE
Improper fuel or water in fuel
SMOKES
Improper air adjustment
Low fuel pressure
Air leaks in fuel lines
Plugged or dirty burner nozzle
Faulty burner nozzle spray pattern
Heavy accumulation of soot on coils
and burner assembly
Misaligned electrode
Obstruction in smoke stack
LOW WATER
Improper fuel or water in fuel
TEMPERATURE
Low fuel pressure
Weak fuel pump
Fuel filter partially clogged
Soot build up on coils
Lime build up in coils
Improper burner nozzle
WATER
Incoming water to machine warm or
TEMPERATURE
hot
TOO HOT
Fuel pump pressure too high
Fuel pump defective
Detergent line sucking air
Defective high limit switch
Incorrect fuel nozzle size
Insufficient water supplied
Restricted water flow
PUMP MOTOR
Insufficient voltage
STOPS AFTER A
FEW MINUTES
Plugged nozzle
OF OPERATION,
OR STARTS
Wrong spray nozzle
SLOW
Automatic overload switch tripped
Motor wet
Short in electrical wiring
Coil liming up causing excessive
pressure
Water pump low or out of oil causing
pump to bind up
TROUBLESHOOTING
SOLUTION
Drain tank and replace contaminated fuel.
Readjust air bands on burner assembly.
Adjust fuel pump pressure to specification on fuel pump.
Check fuel lines for leaks or air bubbles. Tighten or replace
as needed.
Replace.
Replace nozzle.
Remove coils and burner assembly. Clean thoroughly.
Realign electrodes to specifications.
Check for insulation blockage or other foreign objects.
Drain fuel tank and replace with proper fuel.
Increase fuel pressure.
Check fuel pump pressure. Replace pump if needed.
Replace as needed.
Clean coils with soot remover.
Clean inside of coils with coil clean.
See parts list.
Lower incoming water temperature.
See specifications on fuel pump for proper fuel pres-
sure.
Replace fuel pump.
Tighten all clamps. Check detergent line for holes.
Replace.
See specifications for proper size.
Check G.P.M. to machine.
Check nozzle for obstruction, proper size.
Use heavier drop cord and check voltage at receptacle.
Check name plate for amperage draw.
Remove and clean nozzle. Turn on water pump and flush
lines, replace nozzle.
See serial plate for minimum nozzle size.
Allow motor to cool - switch will automatically reset.
Allow to dry.
Wire contacts should be clean and tight. No breaks in
wires.
See section on Preventative Maintenance.
Fill to correct level.
620-622 • 9.800-187.0 • Rev. 9/10
15