Low Voltage Annunciation; Circuit Breakers And Fuses - Cessna 182S Pilot Operating Handbook

SECTION 7
AIRPLANE
&
SYSTEMS DESCRIPTION
LOW VOLTAGE ANNUNCIATION
CESSNA
MODEL 182S
The low voltage warning light is incorporated in the annunciator
panel and activates anytime voltage falls below 24.5 volts. If low
voltage
is detected, the red annunciation VOLTS will flash for
approximately 10 seconds before illuminating steadily. The pilot
cannot turn off the an nunciator.
In the event an overvoltage condition occurs, the alternator
control unit automatically pops the AL T FLO circuit breaker,
removing alternator field current and shutting down the alternator.
The battery will then supply system current as shown by a
discharge rate on the ammeter. Under these conditions, depending
on electrical system load, the low voltage warning annunciator will
illuminate when system voltage drops below normal. The alternator
control unit may be reset by resetting the circuit breaker. If the
warning light extinguishes, normal alternator charging has resumed;
however, if the light illuminates again, a malfunction has occurred,
and the flight should be terminated as soon as practicable .
NOTE
Illumination of the low voltage light and am meter discharge
indications may occur during low RPM conditions with an
electrical load on the system , such as during a low RPM
taxi. Under these conditions, the light will go out at higher
RPM.
CIRCUIT BREAKERS AND FUSES
All ci rcui t breakers inside the airpl ane are of the "push to reset"
or "switch/breaker" type. The power distribution modu le uses spade
type (automotive style) fuses and one glass type fuse (controlling
the clock).
Spare fuses for the power distribution module are located inside
the module. If one of the spare fuses is used, a replacement spare
should be obtained and reinstalled before the next flight.