SECTION
7
PIPER
AIRCRAFT
CORPORATION
DESCRIPTION
&
OPERATION
PA-28-161,
WARRIOR
II
The FAN switch allows operation of the fan with the air conditioner
turned
OFF
to aid cabin air circulation
if
desired. A LOW,
MED
or HIGH
flow
of
air can
be
selected to the air conditioner outlets located in the over-
head duct. The outlets can be adjusted or turned off
by
each occupant to
regulate individual cooling effect.
The
DOOR OPEN indicator light
is
located to the left of the radio stack
in
front
of
the pilot. The light illuminates whenever the condenser door
is
open
and remains on until the
door
is
closed.
A circuit breaker located on the circuit breaker panel protects the air
conditioning electrical system.
Whenever the throttle
is
in
the full throttle position, it actuates a micro
switch which disengages the compressor and retracts the scoop. This
is
done
to
obtain maximum power and maximum rate of climb. The fan continues
to
operate and the air will remain cool for approximately one minute. When
the
throttle
is
retarded approximately 1/4 inch, the clutch will engage and
the scoop
will
extend, again supplying cool, dry air.
7.39 CARBURETOR ICE DETECTION SYSTEM*
A carburetor
ice
detection system
is
available as optional equipment.
The system consists of a control box mounted on the instrument panel, a
probe
sensor mounted in the carburetor and a red warning light to indicate
the presence of
ice
in the carburetor.
If
ice
is
present apply full carburetor
heat. Refer to Carburetor Icing,
Section
3,
Emergency Procedures. To adjust
the system for critical
ice
detection, first turn on the airplanes master switch
and
then turn on the ice detection unit. Turn the sensitivity knob fully
counterclockwise causing the carb.
ice
light to come on. Now rotate the
sensitivity knob back (clockwise) until the
ice
light just goes out. This
establishes the critical setting.
WARNING
This instrument
is
approved as optional equip-
ment only
and
Flight Operations should not
be
predicated
on
its use.
*Optional equipment
REPORT: VB-1180
7-26
ISSUED: AUGUST 13, 1982
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