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钻石40系列飞机维护手册 DA 40 SERIES AIRPLANE MAINTENANCE MANUAL 4(26)

时间:2011-10-28 13:42来源:蓝天飞行翻译 作者:admin
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For an exact indication the airplane must stand on level ground and the measuring device must be held vertically.
The designated location for the fuel quantity measuring device is a bag on the rear side of the pilot seat.

 

Fuel temperature
A fuel temperature sensor measures the fuel temperature in each main tank. The indication is provided by the G1000 flight display. Information about fuel temperature limitations can be found in Chapter 2 - OPERATING LIMITATIONS.
The lower yellow bar indicates that the airplane is not ready for take-off if Diesel Fuel or ' a blend of Diesel Fuel with Jet Fuel is used (approved only if M.M 42-037 is incorporated). If the fuel grade is uncertain, take-off is not allowed in this temperature range either.
In the temperature range below -5 °C (23 °F) the engine must not be started if Diesel Fuel ' or a blend of Diesel Fuel with Jet Fuel is used. If the fuel blend is uncertain, the engine must not be started in this temperature range either.
'  If the airplane is being operated with Jet Fuel, operation in the yellow temperature range is permissible.
'  Fuel grade
Approved fuel grades are listed in Section 2.14. As the fuel grade is important concerning operating temperature limitations, the pilot must be sure about the fuel grade. Cold Diesel ' Fuel tends to flocculate, which can lead to clogging of the fuel filter. The fuel filter is not heated.
' If the airplane is operated in a cold environment, it must be changed from Diesel Fuel ' operation to Jet Fuel operation. To ensure that no blend of Jet Fuel with Diesel Fuel is
in one of the tanks, each tank must be refilled at least twice with more than 65 liters ' (17.2 US gal) of Jet Fuel. Otherwise both tanks must be drained before refueling with ' Jet Fuel.
Doc. No. 7.01.05-E  Rev. 5  15-Nov-2007  Page 7 - 43 


NOTE
In order to provide information about the fuel grade it is recommended to enter the fuel grade in the airplane log each time fuel is refilled.
CAUTION
If the airplane is operated with Diesel Fuel or a blend of Diesel
'  Fuel with Jet Fuel the use of the auxiliary tanks, if installed (O.M 42-056), is not permitted.
Page 7 - 44  Rev. 5  15-Nov-2007  Doc. No. 7.01.05-E 


7.9.6 COOLING SYSTEM
Each engine is liquid cooled. The liquid cooling system consists of a radiator and a bypass to this radiator. The bypass is in operation when coolant temperatures are low. It therefore allows the engine to warm-up quickly. Upon reaching a certain temperature (approximately 88 °C or 190 °F) the radiator is activated by a thermostat valve. Additionally a coolant to air heat exchanger is provided for the cabin heat system. The flow through the heat exchanger is independent of the coolant temperature. An expansion tank helps to adjust the pressure in the system. The system is protected against overpressure by means of a pressure relief valve.
 
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