Piper Malibu PA-46-310P Pilot Operating Handbook page 469

SECTION 9
SUPPLEMENT 13
PIPER AIRCRAFT CORPORATION
PA-46-310P, MALIBU
SECTION I · GENERAL
This supplement supplies information necessary for the operation ofthf
airplane when the optional Supplemental Electric Heater is installed i v -
accordance with FAA Approved Piper data.
SECTION
2 -
LIMITATIONS
(a) Dual functioning alternators are required.
(b) A low voltage monitor system and annunciator must
be
installed and
functional.
(c)
The Vent/ Defog Fan must be operational for heater ground op-
eration.
(d) Maximum ambient temperature for heater operation is 20°C (68°F).
SECTION 3 - EMERGENCY PROCEDURES
AL TERNA TOR annunciator light illuminated:
AUX CABIN HEAT Switch .............................. OFF
LO BUS
annunciator light
illuminated:
. U-·
Volt/ Ammeter ...................... VERIFY LOW VOLTAGE
AUX CABIN HEAT Switch .............................. OFF
Electrical Load ......................... REDUCE until LO BUS
light EXTINGUISHES
NOTE
If
the LO BUS annunciator light does not
extinguish after the electrical. load has been
reduced, and low voltage is verified, an
electrical failure is indicated. Refer to Electrical
Failures procedure in the basic Pilot's
Operating Handbook.
Heater Control Circuit Failure (Heater Continues to Operate With
AUX CABIN and VENT/DEFOG FAN switchc~ OFF):
VNT-DFG Circuit Breaker .............................. PULL
If the heater still operates:
BATT MASTER Switch ................................. OFF
EMER BUS Switch ..•.................................... ON
Land as soon as practical.
REPORT: VB-1200
9-114,
2 of 6
ISSUED: OCTOBER 27, 1987
REVISED: DECEMBER 16, 1987