(2)
Open the access door 811.
4. Procedure
_________ (Ref. Fig. 401/TASK 21-61-34-991-001) Subtask 21-61-34-020-050
A. Removal of the Pack Controller
(1)
Loosen the nuts (4).
(2)
Lower the nuts (4).
(3)
Pull the pack controller (1) on its rack (3) to disconnect the electrical connectors (2).
(4)
Remove the pack controller (1) from its rack (3).
(5)
Put blanking caps on the disconnected electrical connectors.
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Pack Controller
Figure 401/TASK 21-61-34-991-001
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TASK 21-61-34-400-001
Installation 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 access platform 1 m (3 ft. 3 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
21-61-00-710-001 Operational Test of the Pack Temperature-Control System 24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from the External Power 21-61-34-991-001 Fig. 401
3. Job Set-up
__________ Subtask 21-61-34-860-050
A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. TASK 24-42-00-861-001).
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B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------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 AIR COND/PACK TEMP CTL SYS2/1/28VDC 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 21-61-34-010-051
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 21-61-34-991-001) Subtask 21-61-34-420-050
A. Installation of the Pack 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 pack controller (1) in its rack (3).
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(6) Push the pack controller (1) on its rack (3) to connect the electrical connectors.
(7) Engage the nuts (4) on the lugs (5) and tighten. Subtask 21-61-34-865-052
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): FOR 7HH 1HH, 2HH, 3HH, 4HH FOR 27HH 21HH, 22HH, 23HH, 24HH
Subtask 21-61-34-710-050
C. Do an operational test of the pack temperature control (Ref. TASK 21-61-00-710-001).
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