(1)
HOT AIR Pushbutton Switch The HOT AIR pushbutton switch allows the cockpit crew to shut of the trim air flow by closing the trim air system.
(2)
COCKPIT, FWD CABIN and AFT CABIN Temperature Selectors The COCKPIT, FWD CABIN and AFT CABIN temperature selectors allow the cockpit crew to select the cockpit, the FWD cabin and the AFT cabin temperature.
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(3)
PACK FLOW Selector The PACK FLOW selector allows the cockpit crew to select 80%, 100% or 120% of the nominal airflow. In case of 80% selected air flow the Zone Controller (ZC) may increase the airflow up to 100% to satify the temperature demands.
(4)
PACK 1 and PACK 2 Pushbutton Switches The PACK 1 and PACK 2 pushbutton switches allow the cockpit crew to switch the air conditioning packs on or off.
R
**ON A/C 301-399,
B. System Description of the ECS Control The ECS controls the environment for the three independent zones (flight deck, two passenger zones) with a minimum of crew inputs. The only cockpit and cabin crew activated controls (on the overhead panel 30VU) are:
-
the HOT AIR pushbutton switch,
-
the COCKPIT temperature selector,
-
the FWD CABIN temperature selector,
-
the AFT CABIN temperature selector,
-
the ECON FLOW pushbutton switch,
-
the PACK 1 pushbutton switch,
-
the PACK 2 pushbutton switch. The crew can also select the cabin temperature via the FWD attendant panel, if installed (option). The crew inputs via these selectors and switches are to select the temperature, the airflow and to activate the zone trim system and the air conditioning packs. All other controls are fully automatic. System malfunctions are automatically corrected. The failure information is stored in a non volatile memory and data is send to the System Data Aquisition Concentrator (SDAC) and Centralized Fault Display System (CFDS) for display, storage and pilot information.
(1)
HOT AIR Pushbutton Switch The HOT AIR pushbutton switch allows the cockpit crew to shut of the trim air flow by closing the trim air system.
(2)
COCKPIT, FWD CABIN and AFT CABIN Temperature Selectors The COCKPIT, FWD CABIN and AFT CABIN temperature selectors allow the cockpit crew to select the cockpit, the FWD cabin and the AFT cabin temperature.
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(3) ECON FLOW pushbutton Switch
The ECON FLOW pushbutton switch allows the cockpit crew to select 80%
or 100% of the nominal airflow. In case of 80% selected air flow the
Zone Controller (ZC) may increase the airflow up to 100% to satify
the temperature demands.
(4) PACK 1 and PACK 2 Pushbutton Switches
The PACK 1 and PACK 2 pushbutton switches allow the cockpit crew to
switch the air conditioning packs on or off.
R **ON A/C 401-499,
R B. System Description of the ECS Control
R The ECS controls the environment for the three independent zones (flight
R deck, two passenger zones) with a minimum of crew inputs. The only
R cockpit and cabin crew activated controls (on the overhead panel 30VU)
R are:
R - the HOT AIR pushbutton switch,
R - the COCKPIT temperature selector,
R - the FWD CABIN temperature selector,
R - the AFT CABIN temperature selector,
R - the PACK FLOW selector,
R - the PACK 1 pushbutton switch,
R - the PACK 2 pushbutton switch.
R The crew can also select the cabin temperature via the FWD attendant
R panel, if installed (option).
R The crew inputs via these selectors and switches are to select the
R temperature, the airflow and to activate the zone trim system and the air
R conditioning packs. All other controls are fully automatic.
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