Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 439 / 1956

PAGE 1
Feb 28/07 2I19
24-40-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
EXTERNAL POWER
Emergency Starting through External Power Receptacle
CAUTION: DO NOT CONNECT EXTERNAL POWER PLUG TO AIRCRAFT’S EXTERNAL POWER
RECEPTACLE WITH A DISCHARGED OR “RUN-DOWN” AIRCRAFT BATTERY, UNLESS
THE AIRCRAFT’S BATTERY MASTER SWITCH IS TURNED “OFF” AND LEFT “OFF”.
A. Place ground power unit on the pilot’s side of the nose in full view of pilot’s window. Upon
connecting ground power to the aircraft, the External Power Contactor will energize immediately,
supplying electrical power to all aircraft electrical buses.
B. With Battery Master Switch left in the “OFF” position, turn “OFF” all unnecessary electrical loads as
in a normal start.
CAUTION: EXERCISE GREAT CARE DISCONNECTING GROUND POWER PLUG.
DISCONNECT THE PLUG ONLY FROM THE PILOT’S SIDE OF THE AIRPLANE.
C. Start engine and move ground power unit well away from aircraft.
D. Turn “ON” Battery Master Switch.
E. Observe Ammeter indicates Alternator electrical power is available.
F. With the alternator on-line, observe charging current on ammeters.
G. Do not take-off until charging current falls below 20 AMPS.
NOTE: The aircraft battery must be removed from the airplane if it is to be charged with a ground
power dc supply.
Battery = Teledyne/Gill G243 (24 Volts)
Capacity Ratings
1 Hour Emergency Cold Cranking
(Amp Hours) (30 minutes) (60 Seconds)
(Amps) (Amp @ 0°F)
10 17 150
Definitions
1 Hour: The ampere hours shown divided by one hour
is the rate of discharge to 1.5-volts per cell.
Emergency: The amperes shown is the rate of discharge
for 30 minutes to a cut-off voltage of 1.75-volts
per cell.
Cold Cranking: The amperes shown in discharge current
used to crank an engine for 30 seconds at 0°
F to 1.2-volts per cell.
CHART 1
CAPACITY RATINGS AT DISCHARGE RATES