(e)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 1)  Main Power Distribution Panel, P6
 a) 6J18 ENG START AIR CONT

 (f)  
Connect the electrical connector, DV351, to the engine start valve (Refer to AMM 80-11-02/401 to get access to the start valve).

 (g)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 1)  Main Power Distribution Panel, P6
 a) 6J18 ENG START AIR CONT

 S 862-130
 (4)  
Do the steps that follow to release the manifold duct pressure.

 (a)  
Make sure that these circuit breakers are closed:

 1)  Main Power Distribution Panel, P6
 a) 6C8 WING ANTI-ICE VLV

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 36-00-00
 ALL  ú ú 10 Page 208 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 
747-400 
MAINTENANCE MANUAL
 b) 6C9 WING ANTI-ICE CONT
 c) 6H20 L ISO VLV AIR SUPPLY PWR
 d) 6H24 R ISO VLV AIR SUPPLY PWR
 e) 6H32 AIR SUPPLY CONT ENG 1
 f) 6H33 AIR SUPPLY CONT ENG 2
 g) 6H34 AIR SUPPLY CONT ENG 3
 h) 6H35 AIR SUPPLY CONT ENG 4
 i) 6J10 NACELLE ANTI-ICE 1
 j) 6J11 NACELLE ANTI-ICE 2
 k) 6J12 NACELLE ANTI-ICE 3
 l) 6J13 NACELLE ANTI-ICE 4
 (b)  Put the APU BLEED switch, on the P5 overhead panel, to the ON
 position.
 (c)  Put the L and R ISLN switches, on the P5 overhead panel, to the
 OPEN position.
 (d)  Push the ECS switch on the EICAS display select panel.
 (e)  Monitor the MANIFOLD DUCT PRESSURE and the ENG DUCT PRESSURE on
 the Primary EICAS display.
 (f)  Open these circuit breakers and attach DO-NOT-CLOSE tags:
 1) Overhead Circuit Breaker Panel, P7
 a) 7F3 LANDING GEAR DSP & CONT ALTN

 WARNING:_______ MAKE SURE THAT THERE ARE NO PERSONS IN THE AREA OF THE
 WING LEADING EDGE.  THE WING LEADING EDGE THERMAL
 ANTI-ICE AIR CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO

 EQUIPMENT.
 (g)  
Put the WING ANTI-ICE switch, on the P5 overhead panel, to the ON position.

 (h)  
Monitor the MANIFOLD DUCT PRESSURE display.

 1)  When the left and the right manifold duct pressures go to 0 psig, put the WING ANTI-ICE switch to the OFF position.

 (i)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 1)  Overhead Circuit Breaker Panel, P7 a) 7F23 LANDING GEAR DSP & CONT ALTN
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 36-00-00
 ALL  ú ú 08 Page 209 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
 (5)  S 862-084Do the steps that follow is to release the engine duct pressure. (a) Make sure that these circuit breakers are closed: 1) Main Power Distribution Panel, P6 a) 6C8 WING ANTI-ICE VLV b) 6C9 WING ANTI-ICE CONT c) 6H20 L ISO VLV AIR SUPPLY PWR d) 6H24 R ISO VLV AIR SUPPLY PWR e) 6H32 AIR SUPPLY CONT ENG 1 f) 6H33 AIR SUPPLY CONT ENG 2 g) 6H34 AIR SUPPLY CONT ENG 3 h) 6H35 AIR SUPPLY CONT ENG 4 i) 6J10 NACELLE ANTI-ICE 1 j) 6J11 NACELLE ANTI-ICE 2 k) 6J12 NACELLE ANTI-ICE 3 l) 6J13 NACELLE ANTI-ICE 4
 (6)  S 862-131Put the APU BLEED switch, on the P5 overhead panel, to the ON position.
 (7)  S 862-132Put the L and R ISLN switches, on the P5 overhead panel, to the OPEN position.
 (8)  S 212-133Push the ECS switch on the EICAS display select panel. (a) Monitor the MANIFOLD DUCT PRESSURE and ENG DUCT PRESSURE on the Primary EICAS display.
 CAUTION:_______ DO NOT OPERATE THE STARTER TO RELEASE THE PRESSURE IN THE ENGINE BLEED DUCTS. OPERATION OF THE STARTER WITH DUCT PRESSURE LESS THAN 10 PSIG CAN DO DAMAGE TO THE STARTER.
 CAUTION:_______ MAKE SURE THAT THERE ARE NO PERSONS BELOW THE ENGINE INLET. THE NACELLE ANTI-ICE AIR EXHAUST CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
　
中國(guó)航空網(wǎng) m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機(jī)維護(hù)手冊(cè) 氣動(dòng)系統(tǒng) PNEUMATIC SYSTEM(7)