Air Conditioner Operational Check Procedure; Air Conditione~ Effects On Airplane Performance - Piper Cherokee Arrow II PA-28R-200 1973 Pilots Operating Manual

ARROW I1
If fbr any reason a test transmission is necessary, the operator
must first obtain
representative (or other applicable Authority). Test transmission
should be kept to a minimal duration.
AIR CONDITIONMG
To operate the air conditioning system either on the ground or in flight:
Start the engine (ground operation).
2. Turn the air conditioning "Master" switch to "ON."
3.
4. Select desired "FAN" position, "LOW," "MED" o r "HIGH."

AIR CONDITIONER OPERATIONAL CHECK PROCEDURE

Prior to take-off the air conditioner should be checked for proper operation as follows:
1 Check aircraft Master Switch ON.
2. Select desired "FAN" position, "L.OW," "MED" or "HIGH."
3 . Turn the air conditioner control switch to "ON"
warning light will turn on, thereby indicating proper air conditioner condenser door
actuation
4
Turn the air conditioner control switch t o "OFF"
warning light will go out, thereby indicating the air conditioner condenser door is in
the up position.
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 conducted prior to flight.
The above operational check may be performed during flight if an inflight failure is
suspected.
AIR CONDITIONER EFFECTS ON AIRPL.ANE PERFORMANCE
Operation of the air conditioner will cause slight decreases in the cruise speed and range of
the Cherokee Anow 11. 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 normally no measurable difference in climb, cruise o r range performance of
the airplane.
To insure maximum climb performance the air conditioner must
be turned off manually before take-off to disengage the
compressor and retract the condenser door. Also the air
conditioner must be turned off manually before the landing
approach in preparation for a possible go-around.
*Optional equipment
NOTE
permission from a
NOTE
local
-
the "Air Cond. Door Open"
the "Air Cond. Door Open"