I N S P E C T / T E S T / R E M O V E / l N S T A L L H E A T E R - O F F - F A N S W I T C H ( C O N T )
REMOVAL:
TM 5-4520-253-13
Complete removal of the HEATER-OFF-FAN switch is necessary only when replacing a defective
switch. If removed from the control box cover for any other purpose, do not disconnect wires.
1. Remove hex nut at front of control box
cover and pull HEATER-OFF-Fan
switch out of mounting hole from back
cover.
NOTE
Tag wires carefully before disconnecting. Different wires of
the same color are connected to the HEATER-OFF-FAN
switch.
2. Tag wires and cut as close to switch ter-
minals (1, 3, 4, 5, and 6) as possible.
Wire numbers are the same as those
appearing table 3-5.
INSTALLATION:
1.
2.
3.
Install new HEATER-OFF-FAN switch
in mounting hole of control box
cover.
Insert switch from back of
cover.
NOTE
Illustration shows HEATER-OFF-
FAN switch as it appears to
technician standing in front of
control box with cover open.
Note position of numeral 5 on
bottom of switch.
Position HEATER-OFF-FAN switch as
box cover.
Strip 1/4 inch (6.35 mm) of insulation
illustrated and secure with hex nut at front of control
from the cut end of each wire. Solder wires to terminals
in accordance with tags.
If in doubt as to location of any wire, find wire number in table 3-5 and
check From/To columns.
3-57
