737-300 400 500 AMM 飞机维护手册 空调 AIR CONDITIONING 2(139)

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______________________________________________________________
 1.  General_______
 A.  This procedure has one task to clean the conditioned air control components in the passenger cabin and the control cabin.
 TASK 21-61-00-107-010
 2.  Clean the Conditioned Air Control Temperature Sensing Components (Fig. 701)________________________________________________________________
 A.  Standard Tools and Equipment
 (1)  
Soft bristle brush

 (2)  
Blunt-ended metal rod, approximately 1/16 inch diameter, 2-5 inches long.

 (3)  
Filter Material - Scott Filter Foam, 3/16 inch thickness, porosity grade 45 PPI, color - grey, flame retardant, Scott Paper Co. (Foam Div), 1500 E. 2nd St., Chester, PA

 B.  Consumable Materials
 (1)  Detergents
 NOTE: Use one of these detergents (Ref 20-30-31/201):
____
 (a)  
B00029 - Brulin Formula 815 MX - diluted 8 to 1 with water

 (b)  
B00043 - NRG plus No. 678 - diluted as required with water

 (2)  
B00130 - Isopropyl Alchohol TT-I-735

 (3)  
G00034 - Clean and dry cheesecloth or cotton cloths and lint-free tissue

 C.  References
 (1)  
21-61-31/401, Passenger Cabin Temperature Sensor

 (2)  
21-61-34/401, Passenger Cabin Temperature Sensor Fan

 (3)  
21-61-61/401, Control Cabin Temperature Sensor

 (4)  
21-61-64/401, Control Cabin Temperature Sensor Fan

 (5)  
21-62-25/401, Passenger Cabin Temperature Bulb

 (6)  
21-61-00/501, Temperature Control System - Adjustment Test

 D.  Access
 (1)  Location Zones
 101 Control Cabin - Right
 107 Forward Half of Cabin

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 21-61-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 E. Prepare for the Cleaning
 S 027-042
 (1)  At the air inlet to the passenger cabin temperature sensor, do these steps to remove the grille and filter:
 (a)  
Put the metal rod into the hole at the edge of the grille until the spring catch releases.

 (b)  
Remove the grille and the filter.

 S 037-005
 (2)  On the control cabin temperature sensor, do these steps:
 (a)  
Remove the fasteners from the grille.

 (b)  
Remove the grille and the filter.

 S 037-006
 (3)  
Remove the temperature sensor and/or the temperature bulb
 (Ref 21-61-31/401 and/or 21-62-25/401).

 S 037-007

 (4)  
Remove the passenger cabin temperature sensor fan
 (Ref 21-61-34/401).

 S 037-008

 (5)
Remove the control cabin temperature sensor (Ref 21-61-61/401).

 S 037-009

 (6)
Remove the control cabin temperature sensor fan (Ref 21-61-64/401).

 F. Clean the Components
 S 117-031
 (1)  Do these steps to clean the temperature bulb, the temperature sensor, and the temperature sensor probes:
 (a)  
Clean the components with a cloth that is moist with the detergent solution.

 (b)  
Clean the components with the isopropyl alcohol if the contamination continues to occur on the components.

 NOTE: Clean the components again with the detergent solution
____ after you use the isopropyl alcohol.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
 (c)  Flush the components with a cloth that is moist with clean water.
 S 117-032
 (2)  Do these steps to clean the fans:
 CAUTION: DO NOT PUT THE SENSOR ASSEMBLY OR THE MOTOR FULLY IN THE
　
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