Service Procedures; Upper Shell Removal; Fan; Air Output, Air Intake, And Lint Filters - Desa PORTABLE FORCED AIR HEATER 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
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.
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 9).
6. Replace filter end cover.
7. Replace fan guard and upper
shell.
IMPORTANT: Do not oil filters.
101911
Never service heater while it is plugged in, operating, or hot.
Severe burns and electrical shock can occur.
Figure 5 - Upper Shell Removal
Figure 6 - Fan Cross Section
Lint Filter
Air Output Filter
Figure 7 - Air Output, Air Intake, and Lint Filters
!
WARNING
Upper
Shell
Fan
Motor
Motor
Shaft
Setscrew
Air Intake Filter
Filter End Cover
Fan Guard
Fan
Guard
Flush
11