22
Maintenance
PROBLEM
POSSIBLE CAUSE
SOLUTION
MACHINE
SMOKES
WHILE
BURNER UNIT
IS RUNNING
OR
UNIT SMOKES
AT COLD-START
ONLY WHEN
BURNER
IS OFF
Improper fuel or water in fuel
Drain tank and replace contaminated fuel
Improper air adjustment
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
Heavy accumulation of soot on coils
and burner assembly
Remove coils and burner assembly,
clean thoroughly Call local dealer
Misaligned electrode setting
Realign electrodes to specifications
MACHINE
SMOKES
WHILE
BURNER UNIT
IS RUNNING
OR
UNIT SMOKES
AT COLD-START
ONLY WHEN
BURNER
IS OFF
CONTINUED
Obstruction in smoke stack
Check for insulation blockage or other
foreign objects
Low engine RPM
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
Hotsy 1200 Operator’s Manual 8.914-366.0 - AL