Abnormal Procedures; Automatic Fuel Balance Failure - Eclipse 500 System Manual

Section 7. Fuel

7.7 Abnormal Procedures

7.7.1 Automatic Fuel Balance Failure

If a fuel imbalance is not corrected automatically and a fuel imbalance exceeds 65 lbs
a FUEL IMBALANCE caution message is displayed, prompting the pilot to initiate
manual crossfeed.
In the event of a gauging system failure (capacitance probe failure) or electric fuel
pump failure, the automatic balance system is inhibited and a FUEL BALANCE MON
FAULT advisory message appears.
Should automatic balancing continue for 15 minutes without the imbalance being
corrected an AUTO BALANCE FAIL caution appears. This message may be an
indication of a fuel leak and EST FUEL REMAINING should be compared to total fuel
quantity from the gauging systems to confirm if a leak is present.
If automatic balancing is inoperative, the pilot can manually control fuel crossfeed
using the fuel synoptic. The XFEED line select key allows the pilot to select one of
four operations:
OFF
AUTO
L←R
L→R
Selecting L←R or L→R opens the crossfeed valve, turns on the appropriate electric
fuel pump, and prompts a FUEL MAN XFEED L←R or FUEL MAN XFEED L→R
status message to appear.
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Figure 85. Fuel Synoptic- Manual Fuel Crossfeed
Copyright © — Eclipse Aviation Corporation
Eclipse 5OO Systems Manual
Version 2.0 April 2007