Piper Navajo PA-31 Service Manual page 874

SWITCH
12
PIPER NAVAJO SERVICE MANUAL
EL31
49787
MAIN
ELECTRICAL BUS
NO I AVIONICS BUS
TO GABLES
CONTROL PANEL
Figure 11-138. Avionics Master and Emergency Switch Circuit
EL58
42637
25A
WINDSHIELD
HEATING
ELEMENTS
1.5 TO 2.0 OHMS
AT HEATING
ELEMENTS
TIMER
HEAT 125 AT 60°F.
1
AT SENSOR
SENSOR 140 AT 110° F
100F TO 95°F
WILL OPEN UP SENSOR
S/N 31-8112001
to 31-8112075
S/N 31-8152001
to31-8152183
S/N 31-8252001 & Up
Figure 11-139. Windshield Heat w/King KX196 Radio Options
Revised: 10/12/83
ELECTRICAL SYSTEM
4J7