4.2. CC 355 System Components Explanation 1 – 9
No. Description No. Description
1
Condenser: Its main function is to dissipate
the heat absorbed by the refrigerant throughout
the system. In the condenser, the overheated
refrigerant, change its gassy state into a liquid.
6
Fluid Refrigerant: Spheros products use only
R134a refrigerant in order to protect the
environment as its globally accepted standard.
The refrigerant is used to cool down the
passenger compartment by changing its state.
2
Filter Dryer: Used to retain some dross and/or
humidity that might be in the system to avoid
damaging or blocking the expansion valve.
7
Air Circulation: The air, after being cooled in
the evaporator is distributed inside of the bus
through some ducts.
3
Expansion Valve: The thermostatic expansion
valve restricts the entry of the high-pressure
refrigerant that is coming from the condenser
and its function is to regulate the refrigerant
flowing through the evaporator so as to
maintain the pressure and temperature at the
coil outlet.
8
Controller: Installed on the bus dashboard, the
controller enables the driver to choose the set-
point temperature and view the internal bus
temperature, thereby giving the driver complete
climate control inside the bus.
Set-point is the value of the desired
temperature inside of the vehicle.
4
Evaporator: In the evaporator the refrigerant
fluid, now at low pressure, changes its state
from liquid to gas, absorbing heat in this
process from the internal environment of the
bus.
9
Drains: These are used to conduct the
condensate humidity in the evaporator coils
from the evaporator tray to the outside of the
vehicle.
5
Air Filter: The air return filter retains the dross
suspended in the air so as to avoid the
accumulation of waste in the evaporator coils.
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