S 865-138

 (2)  
Hold the WING ANTI-ICE WINDOW/PROBE HEAT test switch on the right sidewall panel, P61, in the WING ANTI-ICE position. Start the operation of the timing device at the same time.

 S 215-014

 (3)  
Make sure the L VALVE light comes on, and the EICAS message L WING ANTI-ICE shows on the EICAS display.

 NOTE: The EICAS message will show in 2 to 3 seconds.
____
 S 215-015
 (4)  Make sure the pressure gage shows 13-20 psig.
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WING AND ENGINE BLEED AIR ANTI-ICE SUPPLY MODULE

P61 PANEL

WING AND ENGINE ANTI-ICE CONTROL PANEL

DUCT 
LEAK  a 
BLEED  a 
HI STAGE  a 

DUCT 
LEAK  a 
BLEED  a 
HI STAGE  a

C

Wing TAI Control
Figure 501

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MAINTENANCE MANUAL

SEE A
PRESSURE SENSE TEST PORT
WING TAI VALVE SEE B
A

LOCKED CLOSED
NOT LOCKED
LIFT & ROTATE 90` CW TO LOCK VALVE CLOSED
WING TAI VALVE B
Wing TAI Valve Figure 502
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 (5)  S 215-035Make sure the L VALVE light on the P5 panel goes off, and the EICAS message L WING ANTI-ICE does not show after approximately 12 seconds.
 (6)  S 865-139Release the WING ANTI-ICE WINDOW/PROBE HEAT test switch.
 S 045-004

 WARNING: PREPARE THE SAFETY-SENSITIVE SYSTEMS FOR THE AIR MODE BEFORE
_______ YOU OPEN THE AIR/GROUND CIRCUIT BREAKERS. IN THE AIR MODE, MANY OF THE AIRPLANE SYSTEMS CAN OPERATE AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
　
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