Piper Malibu PA-46-310P Pilot Operating Handbook page 454

PIPER AIRCRAFT CORPORATION
PA-46-310P, MALIBU
DUAL ALTERNATORS
SECTION 9
SUPPLEMENT 10
Dual 28 volt. 60 amp alternators are installed as part of the complete
'...._,J
icing package. Both alternators must be operational for flight in icing
conditions. They are controlled by ON-OFF type switches labeled AL TNR
NO I and AL TNR NO 2 located on the main switch panel (Figure 7-2).
Circuit protection is provided by similarly labeled circuit breakers located
on the circuit breaker panel. During normal operation both alternators must
be turned ON and the system is designed so that the alternators will share the
total load equally. If either AL TNR switch is turned OFF the ALTER-
NATOR annunciator light will remain lit.
DUAL VACUUM PUMPS
Dual vacuum pumps are installed as part of the complete icing package.
The primary pump is engine driven and operates continuously when the
engine is running. The standby pump is engine driven through an electrically
actuated clutch and is activated either by turning ON the STANDBY V AC
PUMP switch located on the main switch panel(Figure 7-2) or by depressing
the SURF DEICE switch to activate the deice boots, in which case the
standby pump is automatically actuated to increase the efficiency of the
surface deice system. Either pump is capable of operating the surface deice
system with the other pump inoperative. Therefore, the ST AND BY V AC
PUMP switch should only be actuated when a primary pump failure is
indicated by illumination of the VACUUM LOW annunciator light and the
appearance of the left side red flow button on the gyro suction gauge.
ALTERNATE STATIC SOURCE
An alternate static source control valve is located below the instrument
panel to the left of the pilot. For normal operation, the lever remains down.
To select alternate static source, place the lever in the up position. When the
alternate static source is selected the airspeed and altimeter and vertical
speed indicator are vented to the alternate static pad on the bottom aft
fuselage. During alternate static source operation, these instruments may
give slightly different readings. The pilot can determine the effects of the
alternate sources at different airspeeds. Static source pads have been demon-
strated to be non-icing; however, in the event icing does occur, selecting the
alternate static source will alleviate the problem.
ISSUED: JULY 30, 1984
REPORT:
VB-1200
13
or
16,
9-99
I