ACCESS ACCESS
DOOR DOOR
RECIRCULATION RECIRCULATION FAN FAN
RECIRCULATION FILTER RECIRCULATION FILTER (ONE-PIECE FILTER) (TWO-PIECE FILTER)
A B
Recirculation Fan Filter Figure 401
G59361
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
TASK 21-21-23-404-083
3. AIRPLANES WITH A SINGLE FILTER INSTALLATION; Recirculation Fan Filter Installation (Fig. 401)
_____________________________________
A. References
(1) AMM 12-31-01/201, Zone Diagrams
B. Access
(1) Location Zone (AMM 12-31-01/201)
210, Air-Conditioning Distribution Bay
C. Procedure
S 424-075
(1) Install the recirculation fan filter:
(a)
Install the filter.
(b)
Install the access door.
(c)
Use the fasteners to attach the access door to the filter support (14 Locations).
S 414-078
(2) Install this access panel:
(a) Access Panel, Right - Forward Cargo Compartment Aft Bulkhead
S 864-081
(3) Remove the DO-NOT-OPERATE identifiers if no longer necessary.
TASK 21-21-23-004-024
4. AIRPLANES WITH A TWO PIECE FILTER INSTALLATION; Recirculation Fan Prefilter Removal (Fig. 401)
___________________________________
A. General
(1) One recirculation fan filter installation is installed in the air-conditioning distribution bay.
B. References
(1) AMM 12-31-01/201, Zone Diagrams
C. Access
(1) Location Zone (AMM 12-31-01/201)
210, Air-Conditioning Distribution Bay
D. Procedure
S 864-002
(1) Set these switches to the OFF position and attach DO-NOT-OPERATE identifiers:
(a) P5-10 Air-Conditioning Module
1) R PACK
2) L PACK
3) RECIRC FAN
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 014-003
(2) Remove this access panel:
(a) Access Panel, Right - Forward Cargo Compartment Aft Bulkhead
S 024-014
(3) Remove the recirculation fan prefilter:
(a)
Release the fasteners which hold the access door to the filter support (14 Locations).
(b)
Remove the access door.
(c)
Remove the prefilter.
NOTE: If only the prefilter is to be replaced, vacuum the
____ top of the HEPA filter.
(d) Do this step if you only want to replace the prefilter media:
1) Use a twisting motion to remove the media from the prefilter frame.
TASK 21-21-23-404-015
5. AIRPLANES WITH A TWO PIECE FILTER INSTALLATION; Recirculation Fan Prefilter Installation (Fig. 401)
________________________________________
A. References
(1) AMM 12-31-01/201, Zone Diagrams
B. Access
(1) Location Zone (AMM 12-31-01/201)
210, Air-Conditioning Distribution Bay
C. Procedure
S 424-050
(1) Install the recirculation fan prefilter media:
NOTE: This step is necessary only if you are installing filter
____
media into the prefilter frame.
CAUTION:_______MAKE SURE YOU HANDLE THE FILTER MEDIA CAREFULLY. THE FILTER MEDIA CAN BE EASILY PUNCTURED DURING INSTALLATION. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-300 400 500 AMM 飞机维护手册 空调 AIR CONDITIONING 1(35)
