Service Procedures; Upper Shell Removal; Air Output, Air Intake, And Lint Filters - Desa 200,000 Btu/Hr Owner's Manual

B200T 200,000 BTU/HR
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
Figure 5 - 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 6).
7. Place setscrew on flat of shaft. Tighten
setscrew firmly (40-50 inch-pounds).
8. Replace fan guard and upper shell.
Screw
Fan
Guard
Figure 6 - Fan Cross Section
Fan
Motor
Flush
Motor
Shaft
Setscrew
8
AIR OUTPUT, AIR INTAKE,
AND LINT FILTERS
1. Remove upper shell (see 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 6).
6. Replace filter end cover.
7. Replace fan guard and upper shell.
IMPORTANT: Do not oil filters.
Air Intake Filter
Filter End
Cover
Lint Filter
Air Output Filter
Figure 7 - Air Output, Air Intake, and Lint
Filters
Fan
Guard
104473