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A319/A320/A321 TECHNICAL TRAINING MANUAL MECHANICS / ELECTRICS & AVIONICS COURSE 36 PNEUMATIC SYSTEM This document must be used for training purpose only Under no circumstances should this document be used as a reference. It will not be updated. All rights reserved. No part of this manual may be reproduced in any form, by photostat, microfilm, retrieval system, or any other means, without the prior written permission of Airbus Industrie. System Presentation (1) .......................... 1 System Controls Presentation (1)................. 7 ECAM Page Presentation (1) ...................... 11 ** Engine Bleed System Description (3) ......... 15 Pneumatic System Warnings (3) ................... 21 APU Bleed Air SPLY/X-Bleed System (3) .......... 25 ** BMC Interfaces (3)............................ 29 ** Pneumatic Leak Detection System D/O (3) ..... 35 Engine Bleed Air Supply Components (3) ......... 45 ** GND & APU Bleed Air Supply Components (3)... 59 Leak Detection Components (3) ................... 73 _A319/A320/A321 TECHNICAL TRAINING MANUAL MECHANICS / ELECTRICS & AVIONICS COURSE 36 PNEUMATIC SYSTEM UF94200 EFFECTIVITY ALL 36 PNEUMATIC SYSTEM UF94200 TABLE OF CONTENTS Page 36 CONTENTS Page i Dec 31/00 _A319/A320/A321 TECHNICAL TRAINING MANUAL MECHANICS / ELECTRICS & AVIONICS COURSE 36 PNEUMATIC SYSTEM UF94200 EFFECTIVITY ALL 36 PNEUMATIC SYSTEM UF94200 TABLE OF CONTENTS Page 36 CONTENTS Page ii Dec 31/00 THIS PAGE INTENTIONALLY LEFT BLANK 36 - PNEUMATIC 36-00-00 SYSTEM PRESENTATION CONTENTS: Sources Engine Bleed Air Supply Engine Bleed Valve Overpressure Valve Precooler APU Bleed Ground Air Supply Cross Bleed Valve Leak detection Monitoring Users Self Examination TMUPNE201 LEVEL 1 EFFECTIVITY 36-00-00 Page 1 May 31/96 _A319/A320/A321 TECHNICAL TRAINING MANUAL MECHANICS / ELECTRICS & AVIONICS COURSE 36 PNEUMATIC SYSTEM UF94200 EFFECTIVITY Page 1 ALL SYSTEM PRESENTATION SOURCES The Bleed Air system can be supplied by four different sources: the engines, the APU and ground cart. APU bleed air supply has priority over engine bleed air supply. On ground, the system may be supplied by a ground cart. ENGINE BLEED AIR SUPPLY The engine bleed air system is supplied by one of the two different engine compressor stages: the Intermediate Pressure stage or the High Pressure stage. The Intermediate Pressure (IP) stage is normally used. When the IP pressure is too low (low engine speed), the HP valve pneumatically opens and regulates at 36 psi. The valve is used to connect the HP stage to the engine bleed air system. Note: This valve is springloaded closed in the absence of upstream pressure. ENGINE BLEED VALVE The HP or IP air passes through the engine bleed valve which operates as a pressure regulating and shut-off valve. The Engine Bleed Valve operates pneumatically and regulates the downstream pressure to 44 psi. It is springloaded closed in the absence of upstream pressure. Note: The closure of the Engine Bleed Valve causes the HP valve to close. OVERPRESSURE VALVE The overpressure valve is positioned downstream of the engine bleed valve to protect the system. The Overpressure valve is pneumatically operated and springloaded open. PRECOOLER The precooler is a heat exchanger downstream of the engine bleed valve, used to cool the bleed air. A fan air valve regulates the cold air flow to the precooler for bleed air temperature control. The Fan Air Valve allows the bleed air temperature to be maintained at 200ºC. It is springloaded closed in the absence of air pressure. APU BLEED The APU bleed air passes through the APU bleed valve which is pneumatically operated and electrically controlled (GARRET) or fuel operated and electrically controlled (APIC). When open, the APU bleed valve has priority over the engine bleed valves, which are automatically controlled to close. Note: The APU valve is springloaded closed in the absence of air pressure (GARRET) or fuel pressure (APIC). GROUND AIR SUPPLY The bleed air system can be supplied by the ground cart. TMUPNE201-T01 LEVEL 1 EFFECTIVITY 36-00-00 Page 2 May 31/96 _A319/A320/A321 TECHNICAL TRAINING MANUAL MECHANICS / ELECTRICS & AVIONICS COURSE 36 PNEUMATIC SYSTEM UF94200 EFFECTIVITY Page 2 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：ATA 36 PNEUMATIC
