Arrow PA-28R-201 Pilot's Operating Handbook And Faa Approved Airplane Flight Manual page 213

PIPER AIRCRAFT CORPORATION
PA-28R-201, ARROW
SECTION 9
SUPPLEMENT I
SECTION 4 - NORMAL PROCEDURES
Prior to takeoff, the air conditioner should be checked for proper
operation as follows:
(a) Check aircraft master switch ON.
(b) Turn the air conditioner control switch to ON and the fan switch
to one of the operating positions - the AIR COND DOOR OPEN
warning light will turn on, thereby indicating proper air conditioner
'condenser door actuation.
(c) Turn the air conditioner control switch to OFF - the AIR
COND DOOR OPEN warning light will go out. thereby indicating
the air conditioner condenser door is in the up position.
(d) If the AIR COND DOOR OPEN light does not respond as
specified above. an air conditioner system or indicator bulb
malfunction is indicated and further investigation should be
cond ucted prior to flight.
The above operational check may be performed during flight if an in
flight failure is suspected.
The condenser door light is located to the right of the tachometer in
front of the pilot. The door light illuminates when the door is open and is off
when the door is closed.
SECTION 5 - PERFORMANCE
Operation of the air conditioner will cause slight decreases in cruise
speed and range. Power from the engine is required to run the compressor,
and the condenser door. when extended. causes a slight increase in drag.
When the air conditioner is turned off there is normalIy no measureable
difference in climb, cruise or range performance of the airplane.
NOTE
To ensure maximum climb performance the air
conditioner must be turned off manually before
takeoff to disengage the compressor and retract
the condenser door. Also the air conditioner
must be turned off manualIy before the landing
approach in preparation for a possible go-
around.
ISSUED: SEPTEMBER 15, 1988 REPORT: VB-1365
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