Eclipse 500 System Manual page 214

Section 9. Climate Control
If the ram air exhaust valve or fan air control valve fails a CLIMATE CTRL FAIL
advisory message appears and degraded bleed air temperature regulation can
be expected.
Bleed air overheat protection
Two bleed air temperature sensors for each side provide bleed air overheat
detection:
A temperature sensor in each pylon near the heat exchangers monitors for
⎯
bleed air leaks. The pylon temperature is displayed on the pressurization
synoptic. If the pylon temperature exceeds 177°C (350°F), the temperature
display turns red and an L (R) PYLON OVERHEAT warning message
appears.
A temperature sensor in each bleed air muffler duct downstream of the heat
⎯
exchanger monitors bleed air temperature. Bleed air temperature is
displayed on the pressurization (PRESS) synoptic. If the bleed air
temperature exceeds 85°C (185 °F), the temperature display remains white,
a L (R) BLEED AIR TEMP HIGH advisory message appears and the
associated flow control valve closes. Should the bleed air temperature
exceed 100°C (212°F), the temperature display turns red, an L (R) BLEED
AIR OVERHEAT warning message appears, and if not already closed, the
associated flow control valve automatically closes.
TEMPERATURE SENSOR FAILURE
Bleed Air
If the bleed air temperature sensor in the muffler duct fails, a L (R) BLEED AIR
TEMP FAULT advisory message appears and the temperature display on the
pressurization synoptic page reverts to red dashes. Bleed air temperature is then
monitored by a temperature sensor in each evaporator assembly. The bleed air
temperature limit in this case is 176° F. If this temperature is exceeded, the
variable exhaust door on the pylon automatically goes to the full open position for
maximum cooling by the bleed air heat exchanger.
Pylon
If the pylon temperature sensor fails, a L (R) PYLON TEMP FAULT advisory
message appears and the temperature display on the pressurization synoptic
page reverts to red dashes.
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Copyright © — Eclipse Aviation Corporation
Eclipse 5OO Systems Manual
Version 2.0 April 2007