Piper ARROW III Service Manual

TABLE XIV-IV. TROUBLESHOOTING CHART (AIR CONDITIONER) (cont)
Gauge Indication Probable Causes Remedy
Low suction pressure. Low air supply through Repair blower or blower
(Accompanied by icing evaporator. motor. Clean stoppage
evaporator.) in air ducts.
Very dirty evaporator Clean and flush with
fins and coils. water.
Low suction pressure. Undercharge of refrigerant. Add refrigerant. Install
(Evaporator not cold Moisture freezing in ex- new dryer. Evacuate
enough) suction gauge pansion valve. Valve will and recharge 14-13 and
may read a vacuum show frost. Expansion 14-14.
indicating evaporator valve inlet screen clogged.
lacks refrigerant. Inoperative expansion Remove screen. Clean
valve. Valve stuck closed with solvent and replace.
or capillary bulb has lost Warm capillary by holding
its charge. in hand. If suction pressure
does not charge, replace
pansion valve.
Restriction anywhere in Locate restriclion and
liquid line. Restriction repair.
will show first.
High suction pressure. Capillary bulb clamp loose Clean contact surfaces of
on suction line. Suction suction line and cap bulb.
line shows frost. Tighten clamp.
Expansion valve not Replace expansion valve.
closing. Evaporator
flooded. Suction line
frosted to compressor.
Compressor drive belt Adjust belt tension,
slipping. 14-23.
Revised: 2/13/89
3B17
CHEROKEE ARROW III SERVICE MANUAL
ACCESSORIES AND UTILITIES

Piper ARROW III Specifications

General

Manufacturer	Piper Aircraft
Model	ARROW III
Engine	Lycoming IO-360-C1C6
Horsepower	200 hp
Maximum Takeoff Weight	2, 750 lb (1, 247 kg)
Seating Capacity	4
Propeller	2-blade, constant speed
Length	24 ft 7 in (7.49 m)