AIRBUS M35 PNEUMATIC SINGLE AISLE TECHNICAL TRAINING MANUAL MAINTENANCE COURSE M35 LINE MECHANICS (V2500A5.ME)

SINGLE AISLE TECHNICAL TRAINING MANUAL MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) PNEUMATIC This document must be used for training purposes 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 S.A.S. PNEUMATIC Pneumatic Level 2 (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Engine Bleed System Description (3) . . . . . . . . . . . . . . . . . . . . . . . . 16 APU Bleed Air SPLY/X-Bleed System D/O (3) . . . . . . . . . . . . . . . . 20 Pneumatic Leak Detection System D/O (3) . . . . . . . . . . . . . . . . . . . . 22 MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) 36 - PNEUMATIC TABLE OF CONTENTS May 11, 2006 Page 1 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 PNEUMATIC LEVEL 2 (2) SYSTEM OVERVIEW The Pneumatic system is used to supply High Pressure (HP) air for air conditioning, pressurization, engine start and anti-icing. HP air can be supplied from both engines, the APU or an external ground source. ENGINE BLEED The engine bleed air is pressure and temperature regulated prior to supplying the pneumatic system. Air is bled from two engine High Pressure Compressor (HPC) stages, the Intermediate Pressure (IP) stage and the HP stage. The High Pressure Bleed Valve (HPV) supplies air to the system when the engines are at low power. Once the IP bleed is sufficient, the HPV closes. All the engine bleed air is supplied to the pneumatic system through the main engine BLEED valve (or Pressure Regulating Valve (PRV)), which acts as a shut off and overall system pressure regulating valve. Each Bleed Monitoring Computer (BMC) monitors system pressure and will shut down the engine bleed in case of excessive pressure. In addition, an Overpressure Valve (OPV) is installed downstream from the bleed valve to protect the system in case of overpressure. The temperature of the engine bleed air is regulated to a maximum value. The hot bleed air goes through an air-to-air heat exchanger called the precooler. Fan discharge air modulated by the Fan Air Valve (FAV), blows across the pre-cooler to maintain the temperature within limits. APU BLEED/EXTERNAL AIR The left and right bleed systems are connected by a crossbleed duct. A crossbleed valve enables their interconnection or isolation. The APU can also be used for bleed air supply. This is usually done on the ground for air conditioning and for engine start. However, APU BLEED air could also be used in flight, depending on altitude. The APU bleed supply is connected to the left side of the crossbleed duct. On the ground, a HP ground power unit can be connected to the left side pneumatic system. The right side may be supplied by opening the crossbleed valve. MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) 36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 2 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM36BA000000001 SYSTEM OVERVIEW - ENGINE BLEED & APU BLEED/EXTERNAL AIR MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) 36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 3 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM36BA000000001 PNEUMATIC LEVEL 2 (2) SYSTEM OVERVIEW (continued) LEAK DETECTION Leak detection loops are installed along the hot air supply ducts of the pneumatic system and are connected to the BMCs. The leak detection system is organized into three loops. Here are the loops and the protected areas: - PYLON: the pre-cooler outlet area, - WING: wing leading edge and belly fairing, - APU: APU aft supply duct (left hand side of the fuselage) from APU firewall to wheel well area. MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) 36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 4 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM36BA000000001 SYSTEM OVERVIEW - LEAK DETECTION MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) 36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 5 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM36BA000000001 PNEUMATIC LEVEL 2 (2) MEL/DEACTIVATION PRV AND HPV DEACTIVATION In case of failure, the pneumatic system HPV must be deactivated CLOSED for dispatch per Minimum Equipment List. The deactivation procedure is the same for both valves. Procedure: - associated BLEED switch selected OFF, - APU BLEED switch selected OFF, - open the fan cowl and thrust reverser cowl, - deactivate the thrust reverser at the Hydraulic Control Unit (HCU), - on the PRV, move the manual override to the CLOSED position, - secure in CLOSED position with locking pin, - reactivate the thrust reverser, - close cowls. MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) 36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 6 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM36BA000000001 [...]... Valve MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 12 U3U06191 - U0O35M0 - UM36BA000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL MAINTENANCE TIPS - TEST SET MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 13 SINGLE AISLE TECHNICAL TRAINING MANUAL PNEUMATIC LEVEL 2 (2) MAINTENANCE. .. the system MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 10 U3U06191 - U0O35M0 - UM36BA000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL MAINTENANCE TIPS - TROUBLESHOOTING NOTE MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 11 SINGLE AISLE TECHNICAL TRAINING MANUAL PNEUMATIC. .. MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 8 U3U06191 - U0O35M0 - UM36BA000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL MEL/DEACTIVATION - WING LEAK DETECTION MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 9 SINGLE AISLE TECHNICAL TRAINING MANUAL PNEUMATIC LEVEL 2 (2) MAINTENANCE. .. supplied MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 14 U3U06191 - U0O35M0 - UM36BA000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL MAINTENANCE TIPS - ENGINE START WITH GROUND AIR MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 15 SINGLE AISLE TECHNICAL TRAINING MANUAL ENGINE... related BMC MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEAK DETECTION SYSTEM D/O (3) May 10, 2006 Page 24 U3U06191 - U0O35M0 - UM36D4000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL WARNING LOGIC MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEAK DETECTION SYSTEM D/O (3) May 10, 2006 Page 25 SINGLE AISLE TECHNICAL TRAINING MANUAL PNEUMATIC. .. failed MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEAK DETECTION SYSTEM D/O (3) May 10, 2006 Page 26 U3U06191 - U0O35M0 - UM36D4000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL FAULT LOGIC MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEAK DETECTION SYSTEM D/O (3) May 10, 2006 Page 27 SINGLE AISLE TECHNICAL TRAINING MANUAL PNEUMATIC. .. configuration, MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC APU BLEED AIR SPLY/X-BLEED SYSTEM D/O (3) May 10, 2006 Page 20 U3U06191 - U0O35M0 - UM36D3000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL APU BLEED HP GROUND CONNECTION MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC APU BLEED AIR SPLY/X-BLEED SYSTEM D/O (3) May 10, 2006 Page 21 SINGLE AISLE TECHNICAL TRAINING. .. Main Engine Start (MES) MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEAK DETECTION SYSTEM D/O (3) May 10, 2006 Page 28 U3U06191 - U0O35M0 - UM36D4000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL LEAK CONSEQUENCE MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEAK DETECTION SYSTEM D/O (3) May 10, 2006 Page 29 AIRBUS S.A.S 31707 BLAGNAC...U3U06191 - U0O35M0 - UM36BA000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL MEL/DEACTIVATION - PRV AND HPV DEACTIVATION MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC PNEUMATIC LEVEL 2 (2) May 10, 2006 Page 7 SINGLE AISLE TECHNICAL TRAINING MANUAL PNEUMATIC LEVEL 2 (2) MEL/DEACTIVATION (continued) WING LEAK DETECTION U3U06191 - U0O35M0... MECHANICS (V2500-A5/ME)  36 - PNEUMATIC ENGINE BLEED SYSTEM DESCRIPTION (3) May 10, 2006 Page 17 U3U06191 - U0O35M0 - UM36D1000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL GENERAL HEAT EXCHANGER OUTLET TEMPERATURE SENSOR MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  36 - PNEUMATIC ENGINE BLEED SYSTEM DESCRIPTION (3) May 10, 2006 Page 18 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 . 10 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM36BA000000001 MAINTENANCE TIPS - TROUBLESHOOTING NOTE MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ ME) 36 - PNEUMATIC PNEUMATIC. 2006 Page 12 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM36BA000000001 MAINTENANCE TIPS - TEST SET MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ ME) 36 - PNEUMATIC PNEUMATIC. 2006 Page 4 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM36BA000000001 SYSTEM OVERVIEW - LEAK DETECTION MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ ME) 36 - PNEUMATIC PNEUMATIC