Subtask 21-63-00-865-054
C. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
R **ON A/C 401-499,
49VU AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC 52HH D08
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
122VU AIR COND/ZONE TEMP CTL/28VDC/SYS2 122VU AIR COND/ZONE TEMP CTL/28VDC/SYS1 122VU AIR COND/ZONE TEMP CTL/115VAC/SYS2 122VU AIR COND/ZONE TEMP CTL/115VAC/SYS1 4HK 3HK 2HK 1HK V20V19V18V17
R **ON A/C 401-499,
R R 122VU AIR COND/TEMP CTL SYS 2/CHAN A/115VAC 122VU AIR COND/TEMP CTL SYS 2/CHAN A/28VDC 122VU AIR COND/TEMP CTL SYS 1/CHAN A/115VAC 122VU AIR COND/TEMP CTL SYS 1/CHAN A/28VDC 122VU AIR COND/TEMP CTL SYS 2/CHAN B/28VDC 122VU AIR COND/TEMP CTL SYS 2/CHAN B/115VAC 122VU AIR COND/TEMP CTL SYS 1/CHAN B/115VAC 53HH 55HH 49HH 51HH 56HH 54HH 50HH W22W21X22X21 Y21Y20Y18
**ON A/C ALL
4. Procedure_________
Subtask 21-63-00-040-051
A. Deactivation of the Pressure Regulating Valve
(1) Turn the manual override lever (3) to the closed position and safety with lockwire-corrosion resistant steel 0.8 mm (0.0314 in.) dia.
(2) Disconnect the electrical connector 14HK-C (1) from the pressure regulating valve (2).
(3)
Put blanking caps on the disconnected electrical connectors.
(4)
Temporarily attach the disconnected electrical connector 14HK-C (1) to the aircraft structure.
5. Close-up
________
Subtask 21-63-00-410-051
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the access panel 131PW (Ref. TASK 25-54-12-400-001).
(3)
Remove the access platform(s).
(4)
Close the FWD cargo-compartment door 825 (Ref. TASK 52-30-00-860-002).
(5) Make an entry in the log book to record the deactivation. R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
Subtask 21-63-00-865-065
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1HK, 2HK, 3HK, 4HK.
R **ON A/C 401-499,
Subtask 21-63-00-865-065-A
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 49HH, 50HH, 51HH, 52HH, 53HH, 54HH, 55HH, 56HH.
**ON A/C ALL Subtask 21-63-00-862-051
C. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
1EFF : ALL 1 21-63-00Page 418 1 1 Aug 01/05R 1 1 1CES 1
TASK 21-63-00-440-002
Reactivation of the Hot-Air Pressure-Regulating Valve
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
__________________
Refer to the MMEL TASK: 21-63-03 a)
Cockpit and Cabin Temperature Control
Hot Air Pressure Regulating Valve
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
No specific access platform 2 m (6 ft. 7 in.)
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
from the External Power 25-54-12-000-001 Removal of the FWD Cargo Compartment Partition FR34 25-54-12-400-001 Installation of the FWD Cargo Compartment Partition
FR34 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 52-30-00-860-002 Close the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump R TSM ATA 21 (for corrective action)
3. Job Set-up
__________
Subtask 21-63-00-861-053
A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002). Subtask 21-63-00-010-055
B. Get Access WARNING : DO NOT OPEN OR GO NEAR PRESSURE-SEALED DOORS WHEN THE AIRCRAFT
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