External Power - Piper ARCHER III Pilot Operating Handbook

SECTION 7
DESCRIPTION & OPERATION
Located inboard of the temperature control is the fan speed switch and the
air conditioning ON-OFF switch. The fan can be operated independently of the
air conditioning. However, it must be on for air conditioner operation. Turning
either switch off will disengage the compressor clutch and retract the
condenser door. Cooling air should be felt within one minute after the air
conditioner is turned on.
If the system is not operating in 5 minutes, turn
the system OFF until the fault is corrected.
The FAN switch allows operation of the fan with the air conditioner
turned OFF to aid cabin air circulation if desired. A LOW or HIGH flow of air
can be selected to the air conditioner outlets located in the overhead duct. The
outlets can be adjusted or turned off by each occupant to regulate individual
cooling effect.
The ``DOOR OPEN'' indicator light is located in the annunciator panel.
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.

7.35 EXTERNAL POWER

An external power installation is accessible through a receptacle located
on the right side of the fuselage aft of the wing. An external battery can be
connected to the socket, thus allowing the operator to crank the engine without
having to gain access to the airplane's battery.
REPORT: VB-1611
7-24
PA-28-181, ARCHER III
NOTE
ISSUED: JULY 12, 1995