Landa SLT Series, Operator'S Manual

Page: 23 / 26

23
Maintenance
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 assembly with burner switch on.
Heavy sooting on coil and burner can
cause interruption of air flow and shorting
of electrodes
Clean as required.
Improper electrode setting
Check and reset according to diagram in Oper-
ator’s Manual.
Fuel not reaching combustion chamber
Check fuel pump for proper flow. Check solenoid
flow switch on machines with spray gun control,
for proper on-off fuel flow 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
suction line.
Worn piston packing Check and replace if necessary.
Engine altitude
The engine is preset for operation at altitudes
below 1000 feet above sea level. If operated at
higher altitudes, it may be necessary to 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
Fuel is improper or water is in fuel Drain tank and replace contaminated fuel.
Air adjustment is improper Readjust air bands on burner assembly.
Fuel pressure is low <140 psi for burner Adjust fuel pump pressure to specifications.
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.
Coil and burner assembly have heavy
accumulation of soot Remove coils and burner assembly,
clean thoroughly. Call local dealer.
Electrode setting is misaligned Realign electrodes to specifications.
Smoke stack has obstruction
Check for insulation blockage or other foreign
objects.
Engine RPM is low 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
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E