|
曝光台 注意防骗 网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
BLEED LEAK DETECTION SYSTEM To detect hot air leaks from the bleed system, the anti-ice ducts are monitored by the leak detection loops. The bleed leak detection system protects components and structure against over heating and fire hazards. Ducting is divided into four dis-tinctive zones of dual loops. The four zones are divided as follows: -Right pylon dual loops: includes the powerplant interface to the right intermediate pressure valve (IPV) and right high pressure valve (HPV) -Left pylon dual loops: includes the powerplant interface to the left (IPV) and left (HPV) -Right anti-ice ducting dual loops: includes all the ducting downstream of the right HPV to the end of the right wing bleed-air tubing -Left anti-ice ducting dual loops: includes all the ducting downstream of the left HPV to the end of the left wing bleed-air tubing When a leak is detected in the pylon zone (upstream of the HPV), a L (R) PYLON BLEED LEAK (W) message is displayed on the EICAS. The pilot must reduce the corresponding engine throttle and if the leak persists, shut down the corresponding engine. When a leak is detected downstream of the HPV, a WING ANTI-ICE LEAK (W) CAS message is illuminated and the IASC will automatically close both wing anti-ice valves to isolate the failure and stop the leakage. If the leak stops after the au-tomatic shutdown, the warning message will be replaced by a L (R) WING ANTI-ICE FAIL (C) CAS message. The pilot should then complete the shutdown of the wing anti-ice system WING TEMPERATURE SENSORS
WING ANTI-ICING VALVES |
