Piper Navajo PA-31 Service Manual page 967

PIPER NAVAJO SERVICE MANUAL
13-55. GROUND VENT FAN.
13-56. DESCRIPTION OF OPERATION. The vent fan is used in conjunction with the exhaust
air scoop to
vent air out of aircraft cabin during ground operation. The circuit is protected by 7/ amp circuit
breaker.
The ground vent fan switch is located on the overhead switch panel.
13-57. REMOVAL OF GROUND VENT FAN. Is located forward center section of the
raised floor panel
in the aft cabin. (aft of station 244.00)
a. Remove electrical power by pulling out the push/pull circuit breaker.
b.
Remove aft cabin floor carpet molding and lift up carpet.
c. Remove center floor panel screws.
d.
Disconnect electrical connector and ground wire.
e. Remove vent fan mounting screws and remove vent fan.
13-58. INSTALLATION OF GROUND VENT FAN.
a. Position vent fan on mounting bracket and secure with appropriate screws.
b.
Reconnect electrical connector and ground wire.
c.
Replace center floor panel and secure with appropriate screws.
d.
Position floor carpet and replace molding and secure with appropriate screws.
e.
Reset circuit breaker (open exhaust air scoop prior to operational check)
13-59. OVERHEAD VENT FAN (OPTIONAL)
13-60. REMOVAL OF OVERHEAD VENT FAN. Vent fan is located under dorsal
fin just aft of station
296.00.
a.
Remove electrical power by pulling out the push/pull circuit breaker.
b. Remove the aft interior panel.
c.
Disconnect electrical leads from the vent fan.
d.
Remove clamps and hoses securing vent fan and remove vent fan from aircraft.
13-61. INSTALLATION OF OVERHEAD VENT FAN.
a.
Position vent fan and secure with appropriate hoses and clamps.
b. Reconnect electrical leads to the vent fan.
c. Replace the aft interior panel.
d. Reset circuit breaker.
Revised: 10/12/83
HEATING AND VENTILATING SYSTEM
5D 13