Desa 50 - Manuel (Page 12)

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Fan Guard
Upper Shell
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" nut-driver. These
screws attach upper and lower
shells together.
2. Lift upper shell off.
3. Remove fan guard.
SERVICE
PROCEDURES
Air Output
Filter
Lint Filter
Air Output
Filter
Lint Filter
Air Intake
Filter
Filter End
Cover
Fan
Guard
Figure 11 - Air Output, Air Intake,
and Lint Filters, 35/50/70 Models Figure 12 - Air Output, Air Intake,
and Lint Filters, 100/150 Models
Filter End
Cover
Air Intake
Filter
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
setscrews 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 10).
7. Place setscrews on flat of shaft.
Tighten setscrews firmly (40-50
inch-pounds/4.5-5.6 n-m).
8. Replace fan guard and upper shell.
Fan
Motor
Shaft
Figure 10 - Fan Cross Section
Fan
Setscrews
Motor
Shaft
Figure 9 - Fan, Motor Shaft,
and Setscrew Location
Setscrews
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 10).
6. Replace filter end cover.
7. Replace fan guard and upper shell.
IMPORTANT: Do not oil filters.
Fan Guard
Figure 8 - Upper Shell Removal
Flush