Installation of the Temperature Selector

TASK 21-63-11-400-001-A
Installation of the Temperature Selector

ZONE: 210
FIN: 27HK
FIN: 28HK
FIN: 29HK

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

B. Referenced Information

REFERENCE	DESIGNATION
TASK 21-63-00-710-004-A	Operational Test of the Cockpit and Cabin Temperature Control with CFDS/MCDU
Temperature Selector

3. Job Set-up
Subtask 21-63-11-865-051-A

A. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR COND/FLOW/CTL &/IND1	1HB	D07
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
** ON A/C ALL
49VU	AIR BLEED/X FEED/VALVE/BAT	2HV	D13
49VU	AIR COND/RAM/AIR/INLET	1HZ	D10
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
** ON A/C NOT FOR ALL
122VU	AIR COND/FLOW/CTL AND IND/2	2HB	V21
122VU	AIR COND/ZONE TEMP CTL/28VDC/SYS2	4HK	V20
122VU	AIR COND/ZONE TEMP CTL/28VDC/SYS1	3HK	V19
122VU	AIR COND/ZONE TEMP CTL/115VAC/SYS2	2HK	V18
122VU	AIR COND/ZONE TEMP CTL/115VAC/SYS1	1HK	V17
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22
** ON A/C ALL
122VU	AIR BLEED/X FEED VALVE/NORM	1HV	Z20
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22

4. Procedure
Subtask 21-63-11-420-050-A

A. Install the temperature selector:
(1) Install the potentiometer (5). Put the locating stud (6) at the top opposite the black mark (7).
(2) Install the washer (8).
(3) Install the nut (9) and tighten it.
(4) Align the knob (10) with the flat of the shaft.
(5) Push the knob until it is fully engaged.
(6) Moderatily tighten the two screws (11).
(7) Remove the blanking cap from the electrical connector (4) and make sure that the electrical connector is in the correct condition.
(8) Connect the electrical connector (4).
(9) Put the panel 30VU (2) in its housing.
(10) Turn the 4 QAD fasteners (1) one quarter turn.

5. Close-up
Subtask 21-63-11-865-052-A

A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR COND/FLOW/CTL &/IND1	1HB	D07
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
** ON A/C ALL
49VU	AIR BLEED/X FEED/VALVE/BAT	2HV	D13
49VU	AIR COND/RAM/AIR/INLET	1HZ	D10
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
** ON A/C NOT FOR ALL
122VU	AIR COND/FLOW/CTL AND IND/2	2HB	V21
122VU	AIR COND/ZONE TEMP CTL/28VDC/SYS2	4HK	V20
122VU	AIR COND/ZONE TEMP CTL/28VDC/SYS1	3HK	V19
122VU	AIR COND/ZONE TEMP CTL/115VAC/SYS2	2HK	V18
122VU	AIR COND/ZONE TEMP CTL/115VAC/SYS1	1HK	V17
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22
** ON A/C ALL
122VU	AIR BLEED/X FEED VALVE/NORM	1HV	Z20
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22

Subtask 21-63-11-710-050-A

B. Do an operational test of the cockpit and cabin temperature control (Ref. AMM TASK 21-63-00-710-004).

Subtask 21-63-11-942-050-A

C. Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.02 06:11:43 UTC