Defrost Terminator (700Tc/I-3, 700Tf/I-3, 736Tc/I-3); Defrost Heater (700Tc/I-3, 700Tf/I-3, 736Tc/I-3) - Sub-Zero 700TC-3 Service Manual

Integrated
Integrated
Defrost Terminator Removal
(700TC/I-3, 700TF/I-3 & 736TC/I-3)
The defrost terminator is attached to the second tubing
pass from the top of the evaporator.
To access and remove the defrost terminator, first
remove drawers, left side drawer slides, heat exchanger
cover, evaporator cover and the evaporator fan shroud,
then (See Figure 7-32):
1. Extract screws from top of evaporator, then pull top
of the evaporator forward slightly.
2. Disconnect defrost terminator electrical leads.
3. Pull terminator toward back of unit so that clip dis-
engages from evaporator tubing.
NOTE: When reinstalling the defrost terminator, it must
be attached to the second tubing pass of the evaporator.
Installing terminator on the first pass will place it too
close to the defrost heater, causing shortened defrost
times which will lead to incomplete defrost.
Defrost Heater Removal
(700TC/I-3, 700TF/I-3 & 736TC/I-3)
The defrost heater is pressed into the evaporator fins at
the front. Heater clips are then hooked from one evap-
orator tube to another, over the heater.
To access and remove the defrost heater, first remove
drawers, left side drawer slides, heat exchanger cover,
evaporator cover and the evaporator fan shroud, then
(See Figure 7-33):
1. Disconnect defrost heater electrical leads.
2. Grab the return bend of heater clips with a needle-
nose pliers and pull that end of clip away from
evaporator. Unhook other end of heater clip from
evaporator tubing.
3. Cut heater wire near electrical connector and pull
heater from evaporator.
NOTE: When installing replacement heater, do not place
heater clips over top heater pass. Doing so will interfere
with evaporator fan shroud.
3
3 Series
Series
(700- T ALL)
(700- T ALL)
Remove these screws
and pull evap forward
slightly
Defrost Heater
7-15
Component Access/Removal
Defrost Terminator
Figure 7-32. Defrost Terminator, TC/I-3, TF/I-3
Pull heater clips off with pliers
Figure 7-33. Defrost Heater, TC/I-3, TF/I-3
#3758412 - Revision B - December, 2006