Valeo SMARTSPHERE 200 Manual Del Propietário página 29

AIR CONDITIONING OPERATION
1
Refrigerant Fluid
It is inside the air conditioning equipment, inside the
system. It works absorbing the heat from the interior
/ room of the vehicle, at the evaporator, and then it
goes to the condenser where the heat is thrown to
the outside. VALEO Climatização do Brasil - Veículos
Comerciais S/A, products apply refrigerant R134a,
according to the Protection Environmental Law.
2
Compressor
When it is working, the compressor sucks the refrigerant
fluid from evaporator at gaseous state and under low
pressure, compressing it, so temperature and pressure
increase, then the compressor puts it into the condenser.
3
Condenser
Its main goal is dissipate the heat out, which was
absorbed by the refrigerant fluid along the
refrigeration system.
At the condenser, the overheat refrigerant fluid is
sent to outside losing its force, changing from
gaseous state to liquid state.
4
Drying filter
Its main goal is hinder impurities, dust, waste, scrap
or moisture that arrive at the expansion valve.
5 Expansion Thermostatic Valve
Expansion valve hinders the refrigerant inlet that
comes from de condenser at high pressure and its goal
is adjust the refrigerant gas flow that passed by the
evaporator looking for making the pressure steady
and temperature at the capillary tubes output.
6 Evaporator
Now at evaporators, the refrigerant fluid, at low
pressure, turns from liquid to gaseous state,
absorbing the interior heat of the vehicle in this
process.
7 Air filter
Air return filter retains impurities from air avoiding
any block of dirt at evaporator capillary tubes and
coil.
8
Air circulation
Air being cooled by the evaporator, then it follows
to the bus interior through fans.
9
Drain
It is a way to get the condensed moisture from
evaporator tubes from the condensed tray to putting
out.
10 Controller
It is installed in the instrument panel, it offers to the
driver to set-point of temperature, to see by display the
interior temperature, offering full climatic control inside
de bus.
Set-point: it is the temperature the driver wishes to set
inside the vehicle for passengers.
11 Fuse Board
Fuse is a protection component against electric
discharge or short circuit.
SMARTSPHERE 200
12 Condenser Fan
Condenser fan and the compressor will only work if
the air conditioning is at "Cool Mode".
13 Evaporator Blower
Evaporator blowers are working at cool and fan
modes, blowers can be set in two speeds. Speed
control can be manual or automatic.
14
Compressor Operation
It is started up by the vehicle engine though a
pulley-and-belt system and put into action by an
electromagnetic clutch when air conditioning is
operating at "Cool Mode".
15 Temperature Sensor
The interior temperature is measured by the
temperature sensor placed at the air return spot.
16 Pressure Switches
Pressure switches are electric devices that monitor the air
conditioning equipment operation pressure. Every time a
strong change happens from the NORMAL temperature,
they turn off the compressor immediately to avoid break.
Observation: pressures are always monitored, even if the
air conditioning is turned off.
17
Air Renewing
It offers fresh air intake to send bad smells from the
vehicle interior out.
29