leads for the ammeter shunts.
ELECTRICAL SYSTEM OVERCHARGING
There are two alternators and two separate electrical systems. The
main system is driven from the main alternator on the front of the
engine and the auxiliary system is driven from a smaller alternator on
the back of the engine. The main system is controlled by the MASTER
switch and MAIN ALT circuit breaker. The auxiliary system is driven
from the AUX switch and the AUX ALT circuit breaker.
If a high voltage situation is detected on either system, the
corresponding voltage regulator will trip the alternator’s circuit breaker
off-line. If this happens, the annunciation window on the PFD will
indicate the alternator is out. The most likely cause is a transitory spike
or surge which has tripped the alternator off-line. Proceed as described
in the FLIGHT WITH ONE FAILED ELECTRICAL SYSTEM
section.
ALTERNATOR FAILURE
If an alternator has failed, a PFD annunciation window will display “
L
Alt OFF
” or “
R Alt OFF
”. If this happens, the alternator can be
recycled by pulling out then pushing in the MAIN ALT or AUX ALT
circuit breaker as appropriate.
If the alternator annunciation message clears, the flight can continue
normally. If the annunciation remains displayed, proceed as described
in the FLIGHT WITH ONE FAILED ELECTRICAL SYSTEM
section.
FLIGHT WITH ONE FAILED ELECTRICAL SYSTEM
The most prudent course of action is probably to turn off either the
MASTER or AUX switch and continue flight. If the AUX switch is
turned off, all electrical systems will continue to operate but there is no
backup alternator if the main alternator subsequently fails. If the
MASTER switch is turned off, the flight instruments and radios will
continue to function but high current items such as the external lights,
air conditioner, and flaps will be inoperative. The MASTER switch
can be re-engaged as necessary; however the high current items should
be turned off since they will be powered by the main battery and will
have limited time to operate.
WARNING
The cabin outflow valve, necessary for cabin
pressure control, is powered from the main
system. The cabin pressure must be carefully
monitored whenever the MASTER switch is off.
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Страница 82: ...CARE AND CLEANING 10 EXTERIOR PAINTED SURFACES 11 ENGINE 11 RECOMMENDED SERVICING 12 ...
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Страница 95: ...SECTION 9 SUPPLEMENTS TABLE OF CONTENTS ALTITUDE REGULATIONS 2 ALTITUDE REACTION 2 ...
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Страница 122: ...Idle cut off Static rpm Idle mixture Check engine for oil leaks ...