S 415-074
(4)
Install the aft bulkhead lining which you removed in the forward cargo compartment (Ref 25-52-81/401).
S 415-075
(5)
Close the access doors to the air conditioning bays.
S 865-076
(6)
Remove the electrical power if it is not necessary
(Ref 24-22-00/201).
TASK 21-61-00-705-077
3. Operational Test - Temperature Control System_____________________________________________
A. General
(1)
This procedure has these tests:
(a)
Operational Test - Temperature Control System (Control Cabin)
(b)
Operational Test - Temperature Control System (Passenger Cabin)
(c)
Topping Control Test - Duct Limit Sensor (Control Cabin)
(d)
Topping Control Test - Duct Limit Sensor (Passenger Cabin)
(e)
Operational Test - Duct Overheat Protection (Control Cabin)
(f)
Operational Test - Duct Overheat Protection (Passenger Cabin)
(2)
The operational test for the temperature control system will make sure that the components in the system supply the correct temperatures during normal operation. The topping control test for the duct limit sensor will make sure that the components in the system supply the correct temperatures during normal operation. The operational test for the duct overheat protection will make sure that the components and the circuits do not become active during normal operation.
(3)
You must pressurize the pneumatic system to do the tests. The air source can be supplied by the engines, the auxiliary power unit (APU), or by a ground pneumatic cart.
(4)
Before you do this procedure, you must make sure that the pneumatic system, the cooling packs, and the ram air systems operate correctly with no large air leaks from the air supply ducts.
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21-61-00
ALL ú ú 02 Page 514 ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
B. References
(1)
21-51-00/101, Air Cycle System
(2)
24-22-00/201, Electrical Power
(3)
36-05-00/201, Pneumatic System
(4)
36-11-05/101, Engine Bleed Air Distribution System
C. Access
(1) Location Zones
101 Control Cabin - Left
102 Control Cabin - Right
D. Prepare for the Tests
S 865-078
(1)
Supply electrical power (Ref 24-22-00/201).
S 865-079
(2)
Make sure the RECIRC FAN, L PACK and R PACK switches are set to OFF, on the P5-10 panel.
S 865-080
(3)
Pressurize the pneumatic system (Ref 36-05-00/201).
S 865-081
(4)
Put the ISOLATION VALVE switch to OPEN, on the P5-10 panel, when you do the tests to the temperature control system for the passenger cabin.
S 215-082
(5)
Make sure that all the circuit breakers are closed on the P6-3 panel and the P6-4 panel.
S 215-083
(6)
Make sure the indicator needle of each AIR MIX VALVE indicator aligns with the inner mark at the COLD position, on the P5-17 panel.
NOTE: This will show that the air mix valves are in the full cold
____
position.
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21-61-00
ALL ú ú 02 Page 515 ú Mar 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
E. Operational Test - Temperature Control System (Control Cabin)
S 865-084
(1)
Move the AIR TEMP switch to PASS CABIN, on the P5-17 panel.
S 975-085
(2) 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 2(132)
