(c)
6J12, NACELLE ANTI ICE 3
(d)
6J13, NACELLE ANTI ICE 4
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
30-21-00
ALL ú ú 04 Page 510 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(2) S 015-037Open the fan cowl panels for the applicable engine (AMM 71-11-04/201).
(3) S 035-038Disconnect the applicable electrical connector from the engine cowl overheat switch located on the fan cowl support beam: ~................................. | Engine 1 | Connector DS1626 | ................................... | Engine 2 | Connector DS1627 | ................................... | Engine 3 | Connector DS1628 | ................................... | Engine 4 | Connector DS1629 | 2............…....................1
(4) S 865-039Set the applicable NACELLE ANTI ICE switch to the ON position.
(5) S 485-040Connector a jumper from pin 1 to pin 3 on the engine cowl overheat switch electrical connector.
(6) S 715-041Make sure that the applicable EICAS status message NAI DUCT 1, 2, 3, or 4 LEAK shows.
(7) S 765-042Make sure that the voltage between pin 1 (+) and pin 2 (gnd) of the TAI valve electrical connector is 0 |3 volts dc.
(8) S 085-043Disconnect the jumper between pins 1 and 3 of the engine cowl overheat switch electrical connector.
(9) S 765-044Make sure that the voltage between pin 1 (+) and pin 2 (gnd) of the TAI valve electrical connector is 0 |3 volts dc.
S 865-045
(10)
Set the applicable NACELLE ANTI-ICE switch to the off position and then back to the ON position.
S 765-047
(11)
Make sure that the voltage between pin 1 (+) and pin 2 (gnd) of the TAI valve electrical connector is 28 |3 volts dc.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
30-21-00
ALL ú ú 03 Page 511 ú Feb 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
J. Auto Anti-Ice Test
S 715-066
(1) Do an operational test of the ice detection system
(AMM 30-81-00/501).
K. Put the Airplane to its Initial Condition
S 865-067
(1) Close these circuit breakers on the P6, Main Power Distribution Panel:
(a)
6F1, IGN 1 ENG 1
(b)
6K19, IGN 2 ENG 1
(c)
6G19, STBY IGN ENG 1
S 865-048
(2)
Set the applicable NACELLE ANTI-ICE switch to the off position.
S 865-049
(3)
Open this circuit breaker on the P6, Main Power Distribution Panel for the applicable engine:
(a)
6J10, NACELLE ANTI ICE 1
(b)
6J11, NACELLE ANTI ICE 2
(c)
6J12, NACELLE ANTI ICE 3
(d)
6J13, NACELLE ANTI ICE 4
S 435-050
(4)
Connect the electrical connector to the TAI valve.
(5)
Connect the electrical connector to the engine cowl overheat switch.
S 865-077
(6)
Close this circuit breaker on the P6, Main Power Distribution Panel for the applicable engine:
S 435-051
(a) 6J10, NACELLE ANTI ICE 1
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
30-21-00
ALL ú ú 05 Page 512 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(b)
6J11, NACELLE ANTI ICE 2
(c)
6J12, NACELLE ANTI ICE 3
(d)
6J13, NACELLE ANTI ICE 4
S 415-048
(7)
Close the fan cowl panels (AMM 71-11-04/201).
S 415-106
(8)
AIRPLANES WITH ACCESS DOOR ON THE FORWARD FAIRING; Close the TAI access door.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 防冰和排雨 ICE AND RAIN PROTECTION(21)
