User's Manual
Repair
332144C 49
Thermocouple
1. See Before Beginning Repair, page 39.
2. Wait for heaters to cool.
3. Remove heater shroud (90) and electronics cover
(55). See F
IG
. 15, page 48.
4. Loosen and remove temperature control module
bracket mounting fasteners (56). Move control mod-
ule up and out of the way to access thermocouple.
5. Disconnect thermocouple wires from B on tempera-
ture control module. See Temperature Control
Modules Connections, page 47.
6. Clip cable ties as necessary. Note path as wires
must be replaced in the same way.
7. See F
IG
. 16. Loosen ferrule nut (N). Remove ther-
mocouple (310) from heater housing (301), then
remove thermocouple housing (H). Do not remove
the thermocouple adapter (305) unless necessary. If
adapter must be removed, ensure that mixer (309)
is out of the way when replacing the adapter.
8. Replace thermocouple, F
IG
. 16.
a. Remove protective tape from thermocouple tip
(T).
b. Apply PTFE tape and thread sealant to male
threads and tighten thermocouple housing (H)
into adapter (305).
c. Push in thermocouple (310) so tip (T) contacts
heater element (307).
d. Holding thermocouple (T) against heater ele-
ment, tighten ferrule nut (N) 1/4 turn past tight.
9. Route wires (S) into cart and thread into bundle as
before. Reconnect wires to board.
10. Replace heater shroud (90) and electronics cover
(55). See F
IG
. 15, page 48.
11. Turn on heaters ISO and RES simultaneously to
test. Temperatures should rise at same rate. If one
heater is low, loosen ferrule nut (N) and tighten ther-
mocouple housing (H) to ensure thermocouple tip
(T) contacts element (307).
F
IG
. 16. Thermocouple
309
301
S
N
H
T
307
Apply PTFE tape and thread sealant.
1
1
308
ti7924a
Apply 110009 thermal heatsink compound.
2
2
310
305