Troubleshooting - Kärcher LANDA ECOS 7000 Series Service Manual

Maintenance

Troubleshooting

PROBLEM
Flex coupling slipping on fuel
pump shaft or burner motor shaft
On-Off switch defective
Heavy sooting on coil and burner
can cause interruption of air flow
and shorting of electrodes
Improper electrode setting
BURNER WILL
NOT LIGHT
Fuel not reaching combustion
chamber
Clogged burner nozzle
Thermostat faulty or slow engine
speed
Flow switch malfunction
Flow solenoid malfunction
Valves worn
Blockage in valve
Pump sucking air
Worn piston packing
FLUCTUATING
PRESSURE
Gasoline engine altitude
Improper fuel or water in fuel
Improper air adjustment
Fuel pressure is low <140 psi for
MACHINE
burner
SMOKES
Burner nozzle is plugged or dirty
WHILE
BURNER UNIT
Burner nozzle spray pattern is faulty
IS RUNNING
OR
Heavy accumulation of soot on coils
UNIT SMOKES
and burner assembly
AT COLD-START
Misaligned electrode setting
ONLY WHEN
BURNER
Obstruction in smoke stack
IS OFF
Low engine RPM
Fuel Pressure is too high for clean
burn (fuel PSI above 140 and below
200) and smokes when burner is off
20
POSSIBLE CAUSE
Landa ECOS Trailer 7000 Service Manual 9.801-315.0 - AC
SOLUTION
Replace if needed.
Check for electrical current reaching burner assembly
with burner switch on.
Clean as required.
Check and reset according to diagram in Operator's
Manual.
Check fuel pump for proper flow.
Check solenoid flow switch on machines with spray gun
control, for proper on-off fuel flow control.
Clean as required.
Increase engine RPM to increase voltage.
Remove, test for continuity and replace as needed.
Replace if needed.
Check and replace if necessary.
Check and replace if necessary.
Check water supply and air seepage at joints in suction
line.
Check and replace if necessary.
The gasoline engine is preset for operation 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.
Drain tank and replace contaminated fuel
Readjust air bands on burner assembly
Adjust fuel pump pressure to specifications
Replace nozzle. Check parts breakdown
for nozzle size
Replace nozzle. Check parts breakdown
for nozzle size
Remove coils and burner assembly,
clean thoroughly Call local dealer
Realign electrodes to specifications
Check for insulation blockage or other
foreign objects
Increase RPM to correct specs. See serial plate
Reduce fuel pressure PSI/Increase air band set for
cleaner without max water heat loss