Vent Blower Power Circuit Check - Piper APACHE PA-23-235 Service Manual

PIPER AZTEC SERVICE MANUAL
VENT. AIR
TO LANDING GEAR
TERMINA
L
BLOWER
"UP" LIGHT STRIP
CIRCUIT
LANDING GEAR
FILTER
BREAKER LAND
14-28 1301-1 I
VOLTS D.C.
r
CYCLING
ADJUSTABLE
OVERHEAT
SPARK
I SWITCH PLUG
107-16
I RADIO NOISE
FILTER
COMBUSTION
AIRCRAFT CONTROL CIRCUIT AIR BLOWER
Figure 13-26. Primary Power Circuit
circuit breaker before performing electrical continuity checks.
13-108. VENT BLOWER POWER CIRCUIT CHECK. (Refer to Figure 13-26.) With the
HEATER SWITCH in the FAN position, electrical continuity (1 4-28-volts nominal) should
be present at the following locations:
a. Terminal No. 6 on the heater terminal strip.
b. From terminal No. 6 of the heater terminal strip through the radio noise filter to the
ventilating air motor.
c. Electrical ground circuit for the ventilating air motor is provided from terminal No.
4 of the heater terminal strip through the LANDING GEAR SWITCH when the landing gear
is down. Ventilating air motor is inoperative when the landing gear is up.
HEATING AND VENTILATING SYSTEM
5E10 Reissued: 2/18/81
5E10