Dometic GROUP Waeco CoolAir CA-800 Instrucciones De Uso página 23

BA_CA-800.book Seite 23 Dienstag, 9. Februar 2010 12:27 12
CoolAir CA-800
6 Technical description
The roof air conditioner can be used for variable air conditioning inside the
vehicle. The air is drawn in through the intake unit, cooled and then blown out
through the nozzles back into the cab.The system is operated using the con-
trol panel or the remote control.
The air conditioner can lower the temperature within the vehicle to
a certain level. The temperature depends on the type of vehicle,
the ambient temperature and the cooling capacity of your air con-
ditioner. The cooling capacity of your air conditioner (chapter
„Technical data" on page 32.)
The system is fitted with a battery monitor. If the system is operated when
the vehicle ignition is switched off, the cooler switches off automatically as
soon as the supply voltage falls below a set level.
The refrigerant circuit of the roof air conditioner consists of four main
components:
Compressor
The compressor draws in the R134a refrigerant and compresses it. This
raises the pressure and therefore the temperature of the refrigerant.
Condenser
The built-in liquefier works like a cooler or heat exchanger. The air flowing
past absorbs the heat and the hot refrigerant gas cools down and be-
comes liquid.
Capillary tube
The capillary tube reduces the refrigerant from condenser pressure to
lower vaporisation pressure.
Vaporiser
The vaporiser cools down the air flowing past and dehydrates it. The
refrigerant absorbs the heat and vaporises. The cooled air is distributed
within the vehicle through an air outlet unit.
Technical description
23