7
104975
OWNER’S MANUAL
SERVICE
PROCEDURES
UPPER SHELL REMOVAL
1.
Remove screws and lock washers
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.
WARNING: Never service
heater while it is plugged in, op-
erating, or hot. Severe burns and
electrical shock can occur.
Figure 4 - Upper Shell Removal
AIR OUTPUT, AIR INTAKE,
AND LINT FILTERS
1.
Remove upper shell, column 1.
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 5).
6.
Replace filter end cover.
7.
Replace fan guard and upper shell.
IMPORTANT:
Do not oil filters
Figure 7 - Air Output, Air Intake, and Lint
Filters
Air Intake
Filter
Lint Filter
Filter
End
Cover
Air Output
Filter
Fan
Guard
Continued
Upper Shell
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 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 a 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 6).
7.
Place setscrew on flat of shaft. Tighten
setscrew firmly (40-50 inch-pounds/
4.5-5.6 n-m).
8.
Replace fan guard and upper shell.
Figure 5 - Fan, Motor Shaft, and Setscrew
Location
Figure 6 - Fan Cross Section
Motor
Shaft
Setscrew
Fan
Flush
Motor
Shaft
Setscrew
Fan
