SECTION 7 CESSNA
AIRPLANE AND SYSTEMS DESCRIPTION MODEL
2088 (675 SHP)
CABIN HEATING, VENTILATING AND DEFROSTING
SYSTEM
(Continued)
CAUTION
DO NOT PLACE THE CABIN HEAT FIREWALL SHUTOFF
KNOB IN THE
OFF
POSITION WHEN THE MIXING AIR
CONTROL IS IN THE
GRD
POSITION BECAUSE A
COMPRESSOR STALL
WILL OCCUR AT LOW POWER
SETTINGS WHEN THE COMPRESSOR BLEED VALVE IS
OPEN. THE ENGINE MUST BE SHUT DOWN TO
REGEVE
BACKPRESSURE
ON
THE
VALVES
PRIOR
TO
OPENING THE VALVES.
VENT AIR CONTROL KNOBS
Two vent air control knobs, labeled VENT AIR, are located on the
overhead console. The knobs control the operation of the shutoff valves
in each wing which control the flow of ventilating air to the cabin. The
knob on the right side of the console controls the right wing shutoff
valve and similarly, the knob on the left side controls the left wing
shutoff valve. When the vent air control knobs are rotated to the
CLOSE position, the wing shutoff valves are closed; rotating the knobs
to the OPEN position progressively opens the wing shutoff valves.
1
When the optional cabin ventilation fans are installed, rotating the
knobs to the full OPEN position also turns on the ventilation fans.
INSTRUMENT PANEL VENT KNOBS
Two vent knobs, labeled VENT, PULL ON, are located one on each
side of the instrument panel. Each knob controls the flow of ventilating
air from an outlet located adjacent to each knob. Pulling each knob
opens a small air door on the fuselage exterior which pulls in ram air for
distribution through the ventilating outlet.
VENTILATING OUTLETS
1
Adjusrable ventilat ng outlers (one above eacn seat posirion) permir
~ndlvidual vent lation ro rhe alrolane occuDanrs. Tne outlets are tne
swivel type for optimum positiotiing, and
aidlow volume is controlled by
rotatina the outlet nozzle which controls an internal valve. In addition to
the
pil;t and front passenger outlets, the Passenger Version has 11
outlets in the rear cabin area for use by rear seat passengers.
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7-102 U.S. Revision
23
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