R  CMM 215211
R  CMM 215212 21-52-00-991-002 Fig. 701

 3. Job Set-up__________ Subtask 21-52-00-861-053
 A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002). Subtask 21-52-00-865-055
 B. Open, safety and tag this(these) circuit breaker(s):
R  -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 10HM6, 10HM7 **ON A/C 401-499,
R  49VU AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399, 52HH  D08 
R  122VU AIR COND/PACK TEMP/CTL SYS1/1/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/1/28VDC  1HH 3HH  X22X21 
R  **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302, 
R R  122VU AIR COND/PACK TEMP CTL SYS2/1/28VDC **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,  4HH  Y19 
R R  122VU AIR COND/PACK TEMP CTL SYS2/1/115VAC **ON A/C 106-149, 303-399,  2HH  Y18 
R  122VU  4HH  Y19 
R  **ON A/C 401-499, 
R R  122VU AIR COND/TEMP CTL SYS 1/CHAN A/115VAC 122VU AIR COND/TEMP CTL SYS 1/CHAN A/28VDC  49HH 51HH  X22 X21

 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------122VU AIR COND/TEMP CTL SYS 1/CHAN B/115VAC 50HH Y18
 **ON A/C ALL
 FOR 11HM6, 11HM7 
R  **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 122VU AIR COND/PACK TEMP/CTL SYS1/2/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/2/28VDC 122VU AIR COND/PACK TEMP CTL SYS2/2/28VDC 122VU AIR COND/PACK TEMP CTL SYS2/2/115VAC  21HH 23HH 24HH 22HH  W22W21Y21Y20 
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 2/CHAN B/28VDC 122VU AIR COND/TEMP CTL SYS 2/CHAN B/115VAC  53HH 55HH 56HH 54HH  W22W21 Y21Y20 
**ON A/C ALL
 Subtask 21-52-00-010-051
 C. Get Access (Ref. Fig. 701/TASK 21-52-00-991-002)
 (1) Remove the access panel/s (Ref. TASK 53-35-13-000-002).
 (a) FOR 10HM6, 10HM7 - 191KB,
 (b) FOR 11HM6, 11HM7 - 192KB.
 (2) Remove the main heat exchanger (Ref. TASK 21-52-26-000-001) and the primary heat exchanger (Ref. TASK 21-52-25-000-001).

 Primary and Main Heat Exchangers Figure 701/TASK 21-52-00-991-002
 1EFF : 1 1R 1CES  ALL  1 11 1 21-52-00 Page 704 Feb 01/05

 4. Procedure
_________
 Subtask 21-52-00-100-050

 A. Clean the main and the primary heat exchangers (Ref. CMM 215212) and (Ref. CMM 215211).
 5. Close-up
________
 Subtask 21-52-00-410-051

 A. Close Access
 (1)
 Install the main heat exchanger (Ref. TASK 21-52-26-400-001) and the primary heat exchanger (Ref. TASK 21-52-25-400-001).

 (2)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (3)
 Install the access panel/s (Ref. TASK 53-35-13-400-002).

 (a)
 FOR 10HM6, 10HM7

 -191KB,

 (b)
 FOR 11HM6, 11HM7

 -192KB. R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 Subtask 21-52-00-865-056
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
 FOR 10HM6, 10HM7
 1HH, 2HH, 3HH, 4HH.

 FOR 11HM6, 11HM7
 21HH, 22HH, 23HH, 24HH.

R **ON A/C 401-499,
 Subtask 21-52-00-865-056-A
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
 FOR 10HM6, 10HM7
 49HH, 50HH, 51HH, 52HH.

 FOR 11HM6, 11HM7
 53HH, 54HH, 55HH, 56HH.

 **ON A/C ALL
 Subtask 21-52-00-862-052
 C. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).

R **ON A/C 051-052,
R TASK 21-52-00-100-002 R Cleaning of the Air Conditioning Pack-Reheater 10HM3 (11HM3) R WARNING : MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM
_______ R FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. R HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
R 1. Reason for the Job
__________________ R Refer to the MPD TASK: 215200-02 R 2. Job Set-up Information
______________________ R A. Fixtures, Tools, Test and Support Equipment R -------------------------------------------------------------------------------
　
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