Landa PGHW series Operator's Manual page 19

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
BURNER WILL
Improper electrode setting
NOT LIGHT
Fuel not reaching combustion
(continued from
chamber
previous page)
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
burner
MACHINE
SMOKES
Plugged or dirty burner nozzle
WHILE
BURNER UNIT
Faulty burner nozzle spray pattern
IS RUNNING
OR
Heavy accumulation of soot on coils
and burner assembly
UNIT SMOKES
Misaligned electrode setting
AT COLD-START
ONLY WHEN
Obstruction in smoke stack
BURNER
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
POSSIBLE CAUSE
Landa PGHW Operator's Manual 8.916-485.0 - Y
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 feet above sea level. If
operated at higher altitudes, it may be necessary to
install a high altitude main jet in the carburetor.
Contact you 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
Maintenance
19