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102424
SERVICE
PROCEDURES
WARNING
!
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.
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 above).
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 7).
7. Place setscrew on flat of shaft.
Tighten setscrew firmly (4.5-5.6
n-m/40-50 inch-pounds).
8. Replace fan guard and upper shell.
Fan
Setscrew
Motor
Shaft
Motor
Flush
Air Output, Air Intake, and
Lint Filters
1. Remove upper shell (see above).
2. Remove filter end cover screws
using 5/16" nut-driver.
3. Remove filter end cover.
4. Replace air output and lint filters.
5. Wash or replace air intake filter (see
Preventative Maintenance Schedule,
page 8).
6. Replace filter end cover.
7. Replace fan guard and upper shell.
IMPORTANT:
Do not oil filters.
Figure 7 - Fan Cross Section
Figure 6 - Upper Shell Removal
Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
Upper
Shell
Figure 8 - Air Output, Air Intake, and Lint Filters
Fan Guard
Air Intake Filter
Air Output Filter
Filter End Cover
Lint Filter
Fan
Guard