(2)
24-22-00/201, Manual Control
(3)
45-10-00/201, Central Maintenance Computer System
(4)
AIPC 25-71-91 Fig. 1
(5)
AIPC 25-71-91 Fig. 1A
(6)
WDM 21-63-31
(7)
SSM 21-63-01
B. Access
(1) Location Zone
118 Electrical/Electronic Compartment, RH
C. Procedure
S 864-017
(1)
Supply electrical power (Ref 24-22-00/201).
S 974-018
(2)
Operate the CMC to show the SHOP FAULT messages for the pack temperature controller and make a record of them (Ref 45-10-00/201).
NOTE: This step is optional.
____
S 864-002
(3) Make sure the PACKS 1, 2 and 3 switches are at OFF, on the P5 overhead panel.
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A
747-400
MAINTENANCE MANUAL
Pack Temperature Controller Installation
Figure 401
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747-400 MAINTENANCE MANUAL
S 864-003
(4) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
On P6 Main Power Distribution Panel 1) 6F35, PACK TEMP CONT A 2) 6F36, PACK TEMP CONT B
(b)
On P415 Power Distribution Center - Right 1) 415C38, PACK TEMP CONT B 2) 415K27, PACK TEMP CONT A
S 024-004
(5) Remove the pack temperature controller (Ref 20-11-22/401).
TASK 21-62-06-404-005
3. Pack Temperature Controller Installation (Fig. 401)________________________________________
A. References
(1)
20-11-22/401, Rack-Mounted Electrical/Electronic Module
(2)
21-51-00/501, Air Conditioning Pack System
(3)
24-22-00/201, Manual Control
(4)
AIPC 25-71-91 Fig. 1
(5)
AIPC 25-71-91 Fig. 1A
(6)
WDM 21-63-31
(7)
SSM 21-63-01
B. Access
(1) Location Zone 118 Electrical/Electronics Compartment, RH
C. Procedure
S 424-006
(1)
Install the pack temperature controller (Ref 20-11-22/401).
S 864-012
(2)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a) On P6 Main Power Distribution Panel 1) 6F35, PACK TEMP CONT A
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A 747-400 MAINTENANCE MANUAL
(b) 2) 6F36, PACK TEMP CONT BOn P415 Power Distribution Center - Right 1) 415C38, PACK TEMP CONT B 2) 415K27, PACK TEMP CONT A
(3) S 744-019Do the ground test for the pack temperature controller (Ref 21-51-00/501).
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