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 Subtask 21-61-34-865-054
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
RRR R  -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 47HH 49VU AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC 52HH D08 122VU AIR COND/TEMP CTL SYS 1/CHAN A/115VAC 49HH X22 122VU AIR COND/TEMP CTL SYS 1/CHAN A/28VDC 51HH X21 122VU AIR COND/TEMP CTL SYS 1/CHAN B/115VAC 50HH Y18 FOR 57HH 122VU AIR COND/TEMP CTL SYS 2/CHAN A/115VAC 53HH W22 122VU AIR COND/TEMP CTL SYS 2/CHAN A/28VDC 55HH W21 122VU AIR COND/TEMP CTL SYS 2/CHAN B/28VDC 56HH Y21 122VU AIR COND/TEMP CTL SYS 2/CHAN B/115VAC 54HH Y20 
Subtask 21-61-34-010-053
 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_________
 Subtask 21-61-34-420-051
 A. Installation of the Air-Conditioning System Controller (ACSC) (Ref. Fig. 401/TASK 21-61-34-991-002)
 (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. 

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 (5)
 Install the ACSC (1) in its rack (3).

 (6)
 Push the ACSC (1) on its rack (3) to connect the electrical connectors.

 (7) Engage the nuts (4) on the lugs (5) and tighten. Subtask 21-61-34-865-055
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): FOR 47HH 49HH, 50HH, 51HH, 52HH, FOR 57HH 53HH, 54HH, 55HH, 56HH.
 Subtask 21-61-34-710-051
 C. Do an operational test of the pack temperature control (Ref. TASK 21-61-00-710-001).
 5. Close-up
________ Subtask 21-61-34-410-051
 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 21-61-34-862-051
 B. De-energize the ground service network
 (Ref. TASK 24-42-00-862-001).

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 CONTROLLER - PACK (7HH,27HH) - REMOVAL/INSTALLATION
___________________________________________________ TASK 21-61-34-000-003 Removal of the Pack Controller (7HH, 27HH)
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
 No specific circuit breaker(s) safety clip(s)
 No specific 1 ACCESS PLATFORM 1M (3 FT)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001  Energize the Ground Service Network from the External Power 21-61-34-991-003 Fig. 401
 3. Job Set-up
__________ Subtask 21-61-34-861-052
 A. Energize the ground service network
 (Ref. TASK 24-42-00-861-001).

 Subtask 21-61-34-865-056
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 7HH
 122VU AIR COND/PACK TEMP/CTL SYS1/1/115VAC 1HH X22 122VU AIR COND/PACK TEMP/CTL SYS1/1/28VDC 3HH X21 122VU 4HH Y19 122VU AIR COND/PACK TEMP CTL SYS2/1/115VAC 2HH Y18
 FOR 27HH 122VU AIR COND/PACK TEMP/CTL SYS1/2/115VAC 21HH W22 122VU AIR COND/PACK TEMP/CTL SYS1/2/28VDC 23HH W21 122VU AIR COND/PACK TEMP CTL SYS2/2/28VDC 24HH Y21 122VU AIR COND/PACK TEMP CTL SYS2/2/115VAC 22HH Y20
 Subtask 21-61-34-010-054
 C. Get Access
 (1)
 Put the ACCESS PLATFORM 1M (3 FT) in position at the access door 811.

 (2)
 Open the access door 811.

 4. Procedure
　
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