Landa PHW3-11024 Operator's Manual page 21

PROBLEM
Heavy sooting on coil and burner can
cause interruption of air flow and
shorting of electrodes.
Improper electrode setting
Fuel not reaching combustion
BURNER WILL
chamber
NOT LIGHT
(CONTINUED)
Clogged burner nozzle
Water not flowing through flow switch Open spray gun to allow water to flow.
Flow switch malfunction
Fuel solenoid malfunction
Improper fuel or water in fuel
UNIT SMOKES
Improper air adjustment
WHILE BURNER
Low fuel pressure
IS RUNNING
OR
SMOKES AT
Air leaks in fuel lines
COLD-START
WHEN
Plugged or dirty burner nozzle
BURNER IS OFF
ADJUST FOR Faulty burner nozzle spray pattern
LOCAL
Heavy accumulation of soot on coils
ALTITUDE,
and burner assembly
HUMIDITY, AND
AMBIENT AIR
Misaligned electrode
TEMPERATURE.
Obstruction in smoke stack
Improper fuel or water in fuel
Low fuel pressure
Weak fuel pump
LOW WATER
TEMPERATURE
Fuel filter partially clogged
Soot build-up on coils
Lime build-up in coils
Improper burner nozzle
POSSIBLE CAUSE
Landa PHW Operator's Manual 8.917-417.0 - D
SOLUTION
Clean as required.
Clean and set 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.
Replace.
Remove reed and test for continuity. Replace if
needed.
Replace if needed.
Drain tank and replace contaminated fuel.
Readjust air bands on burner assembly.
Adjust higher.
Check fuel lines for leaks or air bubbles. Tighten or
replace as needed.
Replace.
Replace nozzle.
Remove coils and burner assembly. Clean thor-
oughly.
Realign electrodes.
Check for insulation blockage or other foreign
objects.
Drain fuel tank and replace with proper fuel.
Increase fuel pressure.
Check fuel pump pressure. Replace pump if needed.
Replace if needed.
Clean coils with soot remover.
Clean inside of coils with coil clean.
See tank assembly parts list for correct nozzle.
Maintenance
21