S 982-080

 (2)  
Put an observer adjacent to the fan cowl panel in the area of the engine TAI valve (Fig. 202):

 (a)  
Left Engine 413AL

 (b)  
Right Engine 423AL

 (3)
Push the applicable ENGINE ANTI-ICE switch to the ON position.

 (4)  
Stop for 10 seconds.

 (5)
Push the applicable ENGINE ANTI-ICE switch to the OFF position.

 S 862-081
 S 862-082
 S 862-083
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 S 722-084
 (6)  The ground observer must hear the solinoid operate.
 NOTE: If it is to noisey to hear the solinoid operate, it can be
____
 necessary to open the cowl access panel.

 NOTE: If the valve does not opearte, refer to the MEL
____ procedure, ENGINE ANTI-ICE VALVES (in this procedure), for operation of the airplane with the engine anti-ice valves locked in the open or closed position.
 S 852-085
 (7)  Attach an "ENGINE ANTI-ICE VALVE LIGHT INOP" placard to the applicable light on the P5 Panel.
 E. Put the Airplane Back to Its Usual condition.
 S 862-087
 (1)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 (2)
Install all access panels you removed during this procedure.

 S 412-086
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MAINTENANCE MANUAL

412AL  415DL  415CL  415BL  415AL 
422AL  425DL  425CL  425BL  425AL 
415GL  415HL 
425GL  425HL 
412BL 
422BL 
413AL 
423AL 
415JL 
415KL  425JL 
413BL  413CL  415FL  415EL  425FL 
423BL  423CL  425FL  425EL 
ENGINES NO. 1 LEFT AND NO. 2 RIGHT 
RB211-535E4 
LEFT SIDE VIEW 
ENGINE THERMAL 
ANTI-ICE (TAI) 
DUCT (REF) 
ENGINE THERMAL 
　
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本文鏈接地址：757 AMM 飛機(jī)維護(hù)手冊(cè) 防冰和排雨 CHAPTER 30 - ICE AND RAIN PROTECTION(85)