Super 80 Professional – AOM
AIR CONDITIONING AND PRESSURIZATION
Section 6 Page 4
Super 80 Professional – Aircraft Operating Manual
Coolsky, 2018
CONTROLS AND INDICATORS
1. PNEUMATIC PRESSURE GAUGE
Indicates pneumatic pressure in the
crossfeed manifold.
2. PNEUMATIC X-FEED VALVE LEVER
Open
(Up) Supplies bleed air for air foil
ice protection (in flight only), for
operating both air conditioning
packs from one operating engine,
and for making pneumatic
crossfeed starts from opposite
operating engine. Also, on the
ground, supplies APU bleed air or
air from pneumatic ground source
for operating one or both air
conditioning packs or for engine
starting.
Closed (Down) Shuts off engine bleed air
for air foil ice protection and
pneumatic crossfeed starts, and
each air conditioning pack is
supplied engine bleed air from its
respective engine only. On the
ground, APU bleed air or air from
pneumatic ground source is shutoff
and not available for air
conditioning packs or engine starts.
