SECTION 7 CESSNA
AIRPLANE AND SYSTEMS DESCRIPTION MODEL
2088 (675 SHP)
VACUUM SYSTEM AND INSTRUMENTS
A
vacuum system (see Figure
7-16)
provides the suction necessary to
operate the left-hand attitude indicator and the right-hand directional
indicator on some airplanes. On airplanes with the KFC-250 autopilot,
the right-hand attitude indicator and right-hand direction indicator are
vacuum operated. Vacuum is obtained by passing regulated
compressor outlet bleed air through a vacuum ejector. Bleed air flowing
through an orifice in the ejector creates the suction necessary to
operate the instruments. The vacuum system consists of the bleed air
pressure regulator, a vacuum ejector on the forward left side of the
firewall, a vacuum relief valve and vacuum system air filter on the aft
side of the firewall, vacuum operated instruments and a suction gage
on the left side of the instrument panel, and a vacuum-low warning
annunciator on the annunciator panel.
(Continued Next Page)
Revision
23
To Next Page
Loading...
