Service Procedures; Upper Shell Removal; Fan; Air Output, Air Intake, And Lint Filters - Desa PORTABLE FORCED AIR HEATERS Owner's Manual

SERVICE
PROCEDURES

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 mois-
tened 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).
8. Replace fan guard and upper shell.
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 7).
6. Replace filter end cover.
7. Replace fan guard and upper shell.
IMPORTANT: Do not oil filters.
8
!
Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
Figure 4 - Upper Shell Removal
Motor
Shaft
Setscrew
Figure 5 - Fan Cross Section
Lint Filter
Air Output Filter
Figure 6 - Air Output, Air Intake, and Lint Filters
WARNING
Upper
Shell
Fan
Guard
Fan
Motor
Flush
Air Intake Filter
Filter End Cover
Fan Guard
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