Piper CHEROKEE WARRIOR PA-28-151 1995 Maintenance Manual page 275

PIPER CHEROKEE WARRIOR SERVICE MANUAL
2. Apply +12 Vdc to the red wire with the fuse holder. Apply -12 Vdc to the black ground wire.
3. The red carburetor ice light should illuminate. If it does not, the instrument is inoperative, and
must be returned to the manufacturer for repair. (See Note.)
4, If red light illuminates, touch the red wire connector to the black wire connector. The light
must extinguish. If the light does not go out, the instrument is inoperative, and must be returned to the
m a n ufacturer for repair. (See Note.)
The only FAA approved REPAIR shop for the instrument is:
c. To test Warrior III instrument:
1. Disconnect the probe at the knife connectors.
2. Apply +24 Vdc to the red wire with the fuse holder. Apply -24 Vdc to the black ground wire.
3. The red carburetor ice light should illuminate. If it does not, the instrument is inoperative, and
must be returned to the manufacturer for repair. (See Note.)
4, If red light illuminates, touch the red wire connector to the black wire connector. The light
must extinguish. If the light does not go out, the instrument is inoperative, and must be returned to the
m a n ufacturer for repair. (See Note.)
d. To test the probe and instrument's function:
1. Apply power to the system.
A. PA 28-161, Warrior II = 12 Vdc.
B. PA 28-161, Warrior III = 24 Vdc.
2. From its full counterclockwise position, turn sensitivity control up (clockwise) until red light
goes out. This should require 1/4 and 3/4 turn.
3. Place a piece of paper in the air gap between the sensor and housing lens. The red light should
illuminate.
e. Functional check of ice detection probe.
1. Aircraft BATTERY switch ON.
2. Ice detection switch ON./
3. Adjust sensitivity control until red light (ice light) goes OUT. This is a critical setting.
4. Turn ice detection system OFF, then ON. Red light must flash ON, then OFF, indicting all
components are operating normally.
Added: February 28, 1995
NOTE
ARP Industries
36 Bay Drive E.
Huntington, New York 11743
Tel. (516) 427-1585
1L11
Island Enterprises
POWER PLANT