TB20 MAINTENANCE MANUAL 21 AIR CONDITIONING TB20飞机维护手册 21 空调(31)

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2) Open the baggage compartment door, remove the towing bar and baggage compartment bottom door 242.
NOTE : In the case of the oxygen installation, remove the baggage compartment bottom lower door.
3) Remove the protection net.
4) Remove A65 emergency locator transmitter - refer to 25-61-01.
5) Remove protection box (10) of condenser hose.
6) Remove the screws securing inspection door 245 (1) and inspection door 247 (4). Do not remove the three screws (3).
NOTE : One of screws (3) is not easily accessible. It is therefore preferable to remove both doors secured to each other.
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7) Clear and remove both doors.
8) Remove nuts (6), lockwashers (7) and washers (8).
9) Lift evaporator (5), remove it and gently place it on central panel (2).
10) Remove all screws and inspection door 246 (11).
11) In the rear fuselage, disconnect P150 connector.
12) Disconnect air discharge hose (29).
13) Unscrew the clamp securing receiver drier (34).
14) Remove bolts (31) and washers (32) securing support (30) to riveted support (33).
15) Remove and discard nuts (23), remove washers (22), bolts (21) and condenser fan (24) equipped with support (30) and adapter (28).
16) If necessary, remove and discard nuts (27), remove washers (26), bolts (25), adapter (28) and support (30).
C. Installation of the condenser fan
1) Inspect the different removed parts, frame C6 and riveted support for condition and cracks.
2) If removed, install support (30) and adapter (28) on condenser fan (24) with bolts (25), washers (26) and new nuts (27).
NOTE : Condenser fan (24) must be installed with the arrow directed towards the rear of the aircraft and with the wiring outlet towards the aircraft centerline.
3) Position condenser fan (24) assembly on frame C6 and on riveted support (33), and install, but do not tighten, bolts (21), washers (22), new nuts (23), bolts (31) and washers (32).
4) Tighten nuts (23) then bolts (31).
5) Secure receiver drier (34) to its support.
6) Secure air discharge hose (29) to adapter (28).
7) Connect P150 connector.
8) Inspect the airtight housing seals for condition.
9) Position inspection door 246 (11), lift evaporator (5) and insert the four pins (9) into the door.
10) Install washers (8), lockwashers (7) and nuts (6).
11) Make sure all the tools and materials are removed and the work area is clean and free from debris.
12) Install inspection door 246 (11) and install all the screws.
13) Position inspection door 245 (1) and inspection door 247 (4) assembly and install all the screws.
　
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