Hotsy 1200 Series Operator's Manual page 22

Maintenance
PROBLEM
Improper fuel or water in fuel
MACHINE
Improper air adjustment
SMOKES
Fuel pressure is low <140 psi for
WHILE
burner
BURNER UNIT
IS RUNNING
Burner nozzle is plugged or dirty
OR
UNIT SMOKES
Burner nozzle spray pattern is faulty
AT COLD-START
ONLY WHEN Heavy accumulation of soot on coils
and burner assembly
BURNER
IS OFF
Misaligned electrode setting
MACHINE
Obstruction in smoke stack
SMOKES
WHILE
Low engine RPM
BURNER UNIT
IS RUNNING
OR
Fuel Pressure is too high for clean
UNIT SMOKES
burn (fuel PSI above 140 and below
AT COLD-START
200) and smokes when burner is off
ONLY WHEN
BURNER
IS OFF
CONTINUED
22
POSSIBLE CAUSE
Hotsy 1200 Operator's Manual 8.914-366.0 - AL
SOLUTION
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