Maintenance
PROBLEM
POSSIBLE CAUSE
SOLUTION
OIL DRIPPINGS
Oil seal worn
Check and replace if necessary.
Cracked manifold
Check and replace if necessary.
MACHINE SMOKES
Improper fuel or water in fuel
Drain tank and replace contaminated fuel.
Improper air adjustment
Readjust air bands on burner assembly.
Low fuel pressure
Adjust fuel pump pressure to specifications.
Weak fuel pump
Check fuel pump pressure. Replace pump if
needed.
Fuel filter partially cogged
Replace as needed.
Soot build up on coils
Clean coils with soot remover.
Lime build up in coils
Clean inside of coils using Landa's coil cleaner.
Improper burner nozzle
See combustion assembly breakdown
BURNER LIGHT WILL
NOT LIGHT
Disconnected or short in electrical
wiring
All wire contacts should be clean and tight. No
breaks in wire.
Burner motor thermal protector tripped
If tripped, check voltage, connections, and
extensions for cause. Check fuel pump shaft
rotation for binding causing motor to overheat.
Flex-coupling slipping on fuel pump
shaft or burner motor shaft
Replace if needed.
ON-OFF Switch defective
Check continuity through burner switch.
Heavy sooting on coil and burner, can
cause interruption of air flow and
shorting of electrodes
Clean as required.
Improper electrode setting
Clean and test according to diagram in
Operators 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.
Little or no fuel
Fill tank with fuel.
Improper fuel or water in fuel
Drain fuel tank and fill with proper fuel.
Plugged fuel filter
Replace as needed.
Mis-adjusted burner air bands
Readjust air bands for clean burn.
Little or nor fuel pressure from fuel
pump
Increase fuel pressure to specifications and/or
replace fuel pump.
Faulty burner transformer
Test transformer for proper arc between
contacts. Replace as needed.
Clogged burner nozzle
Replace.
Water not turned on
Turn on water to activate burner flow switch.
Flow switch malfunction
Remove, test for continuity and replace as
needed.
Fuel solenoid malfunction
Replace if needed.
Landa 2HOT Series Operator’s Manual -
9.808-353.0
- A
22
