(c) Make sure the VALVE OPEN lights are on dimly after 3 seconds.
(d) Make sure the wing TAI valves are open.
SUBTASK 30-11-11-720-001
(3) Test the TAI valve indication for the left wing:
(a) Open this circuit breaker:
CAPT Electrical System Panel, P18-3
Row Col Number Name
A 1 C00146 ANTI-ICE & RAIN WING ANTI-ICE VALVE
(b) Disconnect the electrical connector from the left wing TAI valve.
(c) Make sure the L VALVE OPEN light is on brightly and continuously.
(d) Reconnect the electrical connector to the TAI valve.
(e) Close this circuit breaker:
CAPT Electrical System Panel, P18-3
Row Col Number Name
A 1 C00146 ANTI-ICE & RAIN WING ANTI-ICE VALVE
(f) Make sure the L VALVE OPEN is on dimly and continuously.
SUBTASK 30-11-11-720-002
(4) Test the TAI valve indication for the right wing:
(a) Open this circuit breaker:
CAPT Electrical System Panel, P18-3
Row Col Number Name
A 1 C00146 ANTI-ICE & RAIN WING ANTI-ICE VALVE
(b) Disconnect the electrical connector from the right wing TAI valve.
(c) Make sure the R VALVE OPEN light is on brightly and continuously.
(d) Reconnect the electrical connector to the TAI valve.
(e) Close this circuit breaker:
CAPT Electrical System Panel, P18-3
Row Col Number Name
A 1 C00146 ANTI-ICE & RAIN WING ANTI-ICE VALVE
(f) Make sure the R VALVE OPEN is on dimly and continuously.
SUBTASK 30-11-11-860-008
(5) Make sure the TAI valves close correctly.
(a) Put the WING ANTI-ICE switch in the OFF position.
(b) Make sure the VALVE OPEN lights come on brightly for 1 to 3 seconds.
(c) Make sure the VALVE OPEN lights go off after 3 seconds.
(d) Make sure the wing TAI valves are closed.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-11-11
Page 502
D633A101-ILF Oct 15/2014
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL
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