R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 21-52-00Page 621 1201-299, 301-399, 1Aug 01/05 1 1 1CES 1 **ON A/C ALL
TASK 21-52-00-200-010
Hot-Air Leak-Check in the Air Conditioning Bay
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Referenced Information
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REFERENCE DESIGNATION
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12-33-21-618-001 Pre-conditioning through the HP Ground Connection 12-33-21-618-001 Pre-conditioning with the APU 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 53-35-13-000-002 Removal of the Quick-Release Access Panels from the Belly Fairing Structure 53-35-13-400-002 Installation of the Quick-Release Access Panels on the Belly Fairing Structure
**ON A/C 001-049, 101-105, 151-199,
21-52-00-991-017 Fig. 604
R **ON A/C 051-099, 106-149, 201-299, 301-399,
21-52-00-991-017-A Fig. 604A
R **ON A/C 401-499,
R 21-52-00-991-017-C Fig. 604B
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**ON A/C ALL
3. Job Set-up__________
Subtask 21-52-00-861-060
A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
Subtask 21-52-00-865-071
B. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
49VU AIR COND/FLOW/CTL &/IND1 1HB D07
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,
R 122VU AIR COND/FLOW/MIXER/FLAP 122VU AIR COND/FLOW/CTL AND IND/2 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 122VU AIR COND/PACK TEMP/CTL SYS1/2/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/2/28VDC 122VU AIR COND/PACK TEMP/CTL SYS1/1/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/1/28VDC 122VU AIR COND/PACK TEMP CTL SYS2/2/28VDC 122VU AIR COND/PACK TEMP CTL SYS2/2/115VAC 3HB 2HB 4HK 3HK 2HK 1HK 21HH 23HH 1HH 3HH 24HH 22HH V22V21V20V19V18V17W22W21X22X21Y21Y20
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-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
R 122VU AIR COND/PACK TEMP CTL SYS2/1/28VDC 4HH Y19
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
R 122VU AIR COND/PACK TEMP CTL SYS2/1/115VAC 2HH Y18
R **ON A/C 106-149, 303-399,
R 122VU 4HH Y19
R **ON A/C 401-499,
R R R R R 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 W22 W21 X22 X21 Y21 Y20Y18
**ON A/C ALL
Subtask 21-52-00-010-068
C. Get Access
(1) Remove the access panel(s) (Ref. TASK 53-35-13-000-002). - 191KB. - 192KB. - 191BB
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4. Procedure
_________
**ON A/C 001-049, 101-105, 151-199,
Subtask 21-52-00-790-051-A
A. Hot-Air Leak-Check
WARNING : PUT ON PROTECTIVE GOGGLES AND THERMAL GLOVES WHEN YOU GO NEAR
_______ AN AIR-CONDITIONING PACK WHEN IT OPERATES. THERE CAN BE LEAKAGE OF HOT AIR, WHICH CAN CAUSE INJURIES.
(Ref. Fig. 604/TASK 21-52-00-991-017)
(1)
Do the pre-conditioning through the HP ground connector (Ref. TASK 12-33-21-618-001) or with the APU (Ref. TASK 12-33-21-618-001).
(2)
Do the Check for Hot-Air Leaks Do this check on all the hot components which are located in the air conditioning bay:
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