Landa SLT6-32324E Operator's Manual page 19

PROBLEM
Fuel reaching combustion chamber
BURNER WILL
Clogged burner nozzle
NOT LIGHT
(continued from Thermostat faulty or slow engine
previous page) speed
Flow switch malfunction
Flow solenoid malfunction
Valves worn
Blockage in valve
Pump sucking air
Worn piston packing
FLUCTUATING
PRESSURE
Gasoline engine altitude
Fuel is improper or water is in fuel
Air adjustment is improper
Fuel pressure is low <140 psi for
MACHINE
burner
SMOKES
Plugged or dirty burner nozzle
WHILE
BURNER UNIT
IS RUNNING Faulty burner nozzle spray pattern
OR
Coil and burner assembly have heavy
accumulation of soot
UNIT SMOKES AT
COLD-START
Smoke stack has obstruction
ONLY WHEN
BURNER IS OFF Engine RPM is low
Fuel Pressure is too high for clean
burn (fuel PSI above >140 and below
200) and smokes when burner is off
Improper fuel or water in fuel
Low fuel pressure
Weak fuel pump
LOW WATER
TEMPERATURE
Fuel filter partially clogged
Soot build-up on coils not allowing
heat transfer
Improper burner nozzle
POSSIBLE CAUSE
Landa SLT/SLX Gas Operator's Manual 8.914-002.0 - AR
SOLUTION
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 feet 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.
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
Replace with clean and proper fuel.
Increase fuel pressure.
Check fuel pump pressure. Replace pump if
needed.
Replace as needed.
Clean coils.
See specifications.
Maintenance
19