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Kärcher TRS-SSG • Operators • 9.801-330.0-K
25
PRESSURE WASHER Troubleshooting Guide
PRESSURE WASHER TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
BURNER WILL
NOT LIGHT
(continued from
previous page)
Flex coupling slipping on fuel
pump shaft or burner motor shaft
Replace if needed.
On-Off switch defective Check for electrical current reaching burner assem-
bly with burner switch on.
Heavy sooting on coil and burner
can cause interruption of air fl ow
and shorting of electrodes
Clean as required.
Improper electrode setting Check and reset according to diagram in Operator's
Manual.
Fuel not reaching combustion
chamber
Check fuel pump for proper fl ow.
Check solenoid fl ow switch on machines with spray
gun control, for proper on-off fuel fl ow control.
Clogged burner nozzle Clean as required.
Thermostat faulty or slow engine
speed
Increase engine RPM to increase voltage.
Flow switch malfunction Remove, test for continuity and replace as needed.
Flow solenoid malfunction Replace if needed.
FLUCTUATING
PRESSURE
Valves worn Check and replace if necessary.
Blockage in valve Check and replace if necessary.
Pump sucking air Check water supply and air seepage at joints in suc-
tion line.
Worn piston packing Check and replace if necessary.
Gasoline engine altitude The gasoline engine is preset for opera-
tion at altitudes below 1000 ft above sea level.
If operated at higher altitudes, it may be necessary to
install a high altitude main jet in the carburetor. Contact
your local authorized engine sales and service center
for details.
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
Improper air adjustment Readjust air bands on burner assembly
Fuel pressure is low <140 psi for
burner
Adjust fuel pump pressure to specifi cations
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 specifi cations
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
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