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# AIR CONDITIONING
## LIMITATIONS
Operation of the air conditioning system is not authorized in the following conditions:
* Ground operation at engine speed below 1200 RPM;
* Take-off and landing;
* Single alternator operation. At 1200 RPM or below, the air conditioning system must be switched OFF.
## NORMAL PROCEDURES
{% hint style="warning" %}
In order to operate the air condition you have to set the Mission Power selector to A/C.
{% endhint %}
#### BEFORE ENGINE STARTING
Add the following step before performing the basic AFM procedure:
A/C LH and RH switches .................................................................................... OFF
#### BEFORE TAXING
A/C LH and RH switches ......................................................................... As required
A/C HIGH/LOW switch ............................................................................. As required
#### BEFORE TAKE-OFF
Add the following step before performing the basic AFM procedure:
A/C LH and RH switches .................................................................................... OFF
#### CLIMB / CRUISE / DESCENT
A/C LH and RH switches ......................................................................... As required
A/C HIGH/LOW switch ............................................................................. As required
#### BEFORE LANDING
Add the following step before performing the basic AFM procedure:
A/C LH and RH switches .................................................................................... OFF
## DESCRIPTION
Air Conditioning system provides conditioned (cooled) air to maintain a comfortable environment inside the passenger cabin during any phase of the flight.
The Air Conditioning operation is based on the use of the following five main components:
* Compressor (pump)
* Condenser (radiator)
* Receiver / Dryer
* Expansion valve
* Evaporator (radiator)
along with the respective electric fans to force air through the condenser and evaporator.
Air Conditioning system takes air from outside the aircraft in order to provide conditioned air (cooled) to passenger cabin through outlet located in the rear side of cabin.
Air Conditioning system is operated by means of a dedicated control panel in cockpit instruments panel, that enables to switch between “OFF” (A/C not operating), “A/C” (A/C operating) or “FAN” (ventilation) on RH & LH air ducts. In addition, two switches (one for each side) are provided to select the FAN speed (HIGH/LOW) when the control switch is in either A/C or FAN position.
The ‘MASTER SWITCH’ connected in the line that supplies electrical power to aircraft also allows the supply to all the air conditioning equipment (compressors, evaporators and fans).
Air Conditioning system equipment is located in the aircraft tail cone (cooling system and related equipment) & passenger cabin ceiling (air ducts).
Detail of Air conditioning control panel
---
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