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L.B.WHITE
KEROSENE PORTABLE FORCED AIR HEATER
SERVICE
PROCEDURES
WARNING: Never service
heater while it is plugged in, op-
erating, or hot. Severe burns and
electrical shock can occur.
UPPER SHELL REMOVAL
1. Remove screws along each side of
heater using 5/16" nut-driver. These
screws attach upper and lower shells
together.
2. Lift upper shell off.
3. Remove fan guard.
Upper
Shell
70,000 BTU Unit
Upper
Shell
150,000 BTU Unit
Figure 4 - Upper Shell Removal
FAN
IMPORTANT: Remove fan from motor
shaft before removing motor from heater.
The weight of the motor resting on the fan
could damage the fan pitch.
1. Remove upper shell (see column 1).
2. Use 1/8" allen wrench to loosen set-
screw which holds fan to motor shaft.
3. Slip fan off motor shaft.
4. Clean fan using soft cloth moistened
with kerosene or solvent.
5. Dry fan thoroughly.
6. Replace fan on motor shaft. Place fan
hub flush with end of motor shaft (see
Figure 5).
7. Place setscrew on flat of shaft. Tighten
setscrew firmly (40-50 inch-pounds).
Fan
8. Replace fan guard and upper shell.
Guard
Fan
Setscrew
Fan
Guard
Motor
Shaft
Motor
Figure 5 - Fan Cross Section
AIR OUTPUT, AIR INTAKE,
AND LINT FILTERS
1.
2.
3.
4.
5. Wash or replace air intake filter (see
6.
7.
IMPORTANT: Do not oil filters.
Flush
Lint Filter
R REMOVAL
Figure 6 - Air Output, Air Intake, and Lint
Filters
8
Remove upper shell (see column 1).
Remove filter end cover screws using
5/16" nut-driver.
Remove filter end cover.
Replace air output and lint filters.
Preventative Maintenance Schedule,
page 6).
Replace filter end cover.
Replace fan guard and upper shell.
Air Intake
Filter
Filter End
Cover
Lint Filter
Air Output
50 AIR FILTER REMOVAL
PFA/P 044
Filter
70,000 BTU Unit
Air Intake
Filter
Filter End
Cover
Air Output
Filter
PFA/P 047
150,000 BTU Unit
Fan Guard
Fan Guard
104041
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