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B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------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
Subtask 21-63-34-010-051
C. Get Access
(1)
Make sure that the access platform is in position at the access door
811.
(2)
Make sure that the access door 811 is open.
4. Procedure
_________ (Ref. Fig. 401/TASK 21-63-34-991-001) Subtask 21-63-34-420-050
A. Installation of the Zone Controller
(1)
Clean the component interface and/or the adjacent area.
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Remove the blanking caps from the electrical connectors.
(4)
Make sure that the electrical connectors are clean and in the correct condition.
(5)
Install the zone controller (1) on its rack (3).
(6)
Push the zone controller (1) on its rack (3) to connect the electrical connectors (2).
(7)
Engage the nuts (4) on the lugs (5) and tighten.
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B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1HK, 2HK, 3HK, 4HK.
Subtask 21-63-34-710-050
C. Do an operational test of the cockpit and cabin temperature control (Ref. TASK 21-63-00-710-004).
5. Close-up
________ Subtask 21-63-34-410-050
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the access door 811.
(3) Remove the access platform(s). Subtask 21-63-34-862-050
B. De-energize the ground service network
(Ref. TASK 24-42-00-862-001).
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CHECK VALVE -TRIM AIR (18HM,19HM) - REMOVAL/INSTALLATION
________________________________________________________ TASK 21-63-42-000-001 Removal of the Trim-Air Check Valves 18HM and 19HM WARNING : MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM
_______ FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 53-35-13-000-002 Removal of the Quick-Release Access Panels from the Belly Fairing Structure 21-63-42-991-001 Fig. 401
3. Job Set-up
__________ Subtask 21-63-42-861-051
A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
Subtask 21-63-42-865-050
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 18HM
R **ON A/C 401-499,
R 49VU AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399, 52HH D08
R 122VU AIR COND/PACK TEMP/CTL SYS1/1/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/1/28VDC 1HH 3HH X22X21
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
R R 122VU AIR COND/PACK TEMP CTL SYS2/1/28VDC **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399, 4HH Y19
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