24
CH0305-F05
5.7
1
2
3
4
CONTROL PANEL
1
“START-STOP” switch
Switch used to switch off (by means of a servomechanism) the mains supply to the equipment (380V); the control
system remains switched on.
2
Alarm signal
This indicates an alarm condition in the equipment; in this condition the equipment is switched OFF (at the same time
the type of alarm is shown on the LCD display).
3
Internal light switch
This is used to switch the internal light on and off.
4
Operator panel with LCD display
The operator panel with liquid crystal display is used to programme and visualize all the functions and variables which
operate the equipment.
A detailed description of how to use the operator panel is given in the attached instruction handbook for the operator
panel.
5.3
COOLING SYSTEM
The cooling system has been optimized to give maximum thermodynamical efficiency and an accurate temperature
control.
The system is loaded with ozone harmless fluids: R404A and R23.
Cooling is obtained by the evaporation of the liquid injected into the evaporator.
The compressor compresses the (cooling) gas into the condenser and under the effect of the high pressure and cooling
the gas changes state and becomes liquid.
The liquid expands thanks to a thermostatic valve and as it evaporates, it absorbs heat and induces cooling at the same
time.
The cycle is completed when the gas is sucked in once again by the compressor.
5.4
DEHUMIDIFCATION SYSTEM
NB: the dehumidification system is installed:
•
on climatic machines
•
on thermostatic machines equipped with (optional) rise dehumidification
Dehumidification is obtained by “COLD FINGER” technology.
A small, smooth pipe evaporator captures humidity in the air by freezing it without varying the temperature inside the
chamber.
The evaporator is fed by the cooling system itself.
The ice which accumulates on the coil will then melt and the resulting condensate is eliminated through the special
drainage system.
When the machine is testing “dirty” components, it is advisable not to switch on the recirculation system in order to avoid
the concentration of impurities (see paragr. “6.2.1 Condensate drain” and paragr. “11 How to clean the demineralized
water recirculation system).
