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107351-01
Periodic Service
WARNING: High Voltage!
REPLACING FUSE
1. Unplug heater.
2. Remove side cover screws to expose ignition
control assembly.
3. Remove fuse cover (A).
4. Remove fuse from fuse clips (B).
5. Replace fuse (C) with fuse of the same type
and rating (GMA-10). Do not substitute a fuse with a
higher current rating.
6. Replace fuse cover.
7. Replace side cover.
CLEANING FAN
CAUTION: Fan blades are sharp. Carefully
work around blades or wear gloves when
cleaning.
Flush
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 and fan guard.
2. Loosen setscrew (A) which holds fan (B) to
motor shaft (C).
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.
7. Place setscrew on flat of shaft. Tighten set-
screw firmly (40 to 50 in-lbs/4.5 to 5.6 N-m).
8. Replace fan guard and upper shell.
16
B
C
A
B
C
A