SERVICE PROCEDURES
WARNING: To avoid risk of burn and electrical shock, never attempt to service heater while it is plugged in, operating or hot.
UPPER SHELL REMOVAL
1.Remove screws along each side of heater using 5/16"
2.Lift upper shell off.
3.Remove fan guard.
Screw | Upper Shell |
|
Fan Guard
Figure 11 - Upper Shell Removal,
40/55/70 Models Only
Screw
Upper Shell
Fan Guard
Figure 12 - Upper Shell Removal,
115/165 Models Only
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 (see Figure 13).
1.Remove upper shell (see Figure 11 or 12).
2.Use 1/8" allen wrench to loosen setscrew 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 14).
7.Place setscrew on flat of shaft. Tighten setscrew firmly
8.Replace fan guard and upper shell.
Setscrew | Fan |
|
| Motor Shaft |
|
Figure 13 - Fan, Motor Shaft, and | ||
| Setscrew Location | |
Motor | Setscrew | Fan |
|
| |
|
| Flush |
| Motor |
|
| Shaft |
|
Figure 14 - Fan Cross Section | ||
AIR OUTPUT, AIR INTAKE AND LINT | ||
FILTERS |
|
|
1.Remove upper shell (see Figure 11 or 12).
2.Remove filter end cover screws using 5/16" nut- driver (see Figure 15 or Figure 16, page 11).
3.Remove filter end cover.
4.Replace air output and lint filters.
5.Wash or replace air intake filter (see Preventa- tive Maintenance Schedule, page 8).
| Air Intake Filter |
| Filter End |
| Cover |
Lint Filter | Air Output Filter |
| |
Figure 15 - Air Output, Air Intake, and | |
Lint Filters, 40/55/70 Models Only | |
10 | www.desatech.com |