Defrost Terminator (700Bc/I-3, 700Bf/I-3); Defrost Heater (700Bc/I-3, 700Bf/I-3) - Sub-Zero 700-3 BASE Technical & Service Manual

Integrated
Evaporator Thermistor Removal
(700BC/I-3, 700BFI-3 Only)
A cable tie holds the evaporator thermistor to the third
elbow down on the right side of the evaporator.
To remove the evaporator thermistor (See Figure 7-25):
1. Cut cable tie.
2. Cut thermistor wire leads, and lift the thermistor out
of the sump area.
NOTE: There may be a Y-harness between the ther-
mistor electrical connections, with wires exiting through
the heat exchanger hole in sump. This is for factory
test purposes and can be removed or bypassed.
Defrost Terminator Removal
(700BC/I-3, 700BF/I-3 Only)
The defrost terminator is attached to the sixth elbow
down on the right side of the evaporator.
To remove the defrost terminator (See Figure 7-26):
1. Disconnect terminator electrical leads.
2. Disengage terminator clip from return elbow and lift
terminator out of the sump area.
NOTE: When reinstalling defrost terminator, it must be
attached to the the same elbow (sixth down) it was
removed from. Failure to do so could cause shortened
defrost times which will lead to incomplete defrost.
Defrost Heater Removal
(700BC/I-3, 700BF/I-3 Only)
The defrost heater is pressed into evaporator fins at
front. Heater clips then hook from one evaporator tube
to another, over heater.
To remove the defrost heater (See Figure 7-27):
1. Disconnect heater electrical leads.
2. Disengage heater clips from evaporator using nee-
dle-nose pliers.
3. Pull heater from evaporator fins, and lift heater out
of the sump area.
NOTE: When installing heater, make sure it is posi-
tioned as far left as possible. Installing heater too close
to terminator could cause shortened defrost times which
will lead to incomplete defrost.
3 Series
(700- BASE)
Thermistor Electrical Leads
7-13
Component Access/Removal
Figure 7-25.
700BCI-3 & 700BFI-3 Evaporator Thermistor
Terminator Electrical Leads
Figure 7-26.
700BCI-3 & 700BFI-3 Defrost Terminator Removal
Heater Clip
Heater Electrical Leads
Figure 7-27.
700BCI-3 & 700BFI-3 Defrost Heater Removal
#3758424 - Revision B - December, 2005
Evaporator Thermistor
Defrost Terminator
Defrost Heater