K/KU TN 70/72 K/KU TNV 70/140

The appliance is fitted with a control panel found on the panel
at the top of the door.
The panel has been fitted with all the command and control
devices required to operate the appliance:
� - ON-OFF TELLTALE SWITCH
�- FAN SWITCH ( NOT AVAILABLE ON MODELS WITH
PLANT TYPE KTN 12 E KTN 13 ).
�- LIGHT SWITCH (ONLY FOR GLASS DOOR)
�- DEFROST LIGHT
�- ELECTRONIC THERMOSTAT
1.0 - TELLTALE SWITCH
To turn the appliance on and off. The green light signals that
voltage is supplied to the electric plant of the appliance.
2.0 - FAN TELLTALE SWITCH
To start or stop the fan inside the unit and to signal its
operating status.
By switching off the yellow switch the unit will operate by
convection.
3.0- LIGHT TELLTALE SWITCH
Found only on the K TNV models (with glass door), coloured
white.
To turn ON and OFF the inside light and signal its status
4.0- DEFROST LIGHT
The red light referring to the unit defrost cycle.
When ON, it signals that the unit is in the defrost phase.
5.0 - ELECTRONIC THERMOSTAT
To regulate the control and management of the operation of
the appliance.
5.1 - THERMOREGULATION
The electronic thermostat acts to maintain the temperature
inside the fridge compartment as close as possible to the Set
Point value.
Further to the Set Point the regulator uses another parameter
- Hysterysis , that is factory set, and determines the range
of fluctuation from the Set Point permitted for the fridge
compartment temperature
Example :
with Set Point = -2°C and Hysterysis = 2°C we have :
Pag. 18
CONTROL PANEL
CONTENTS:
1.0 - ON-OFF TELLTALE SWITCH
2.0 - FAN TELLTALE SWITCH
3.0 - LIGHT TELLTALE SWITCH
4.0 - DEFROST LIGHT
5.0 - ELECTRONIC THERMOSTAT
5.1 - THERMOREGULATION
5.2 - COMPRESSOR TIMING
5.3 - MAXIMUM AND MINIMUM TEMPERATURE ALARMS
5.4 - EVAPORATOR FAN OPERATION MANAGEMENT
5.5 - DEFROST MANAGEMENT
6.0 - SET POINT
6.1 - SET POINT VARIATION
7.0 - OPERATING STATUS OF THE APPLIANCE COMPONENTS
8.0 - ALARM CODE
The compressor will start when the compartment temperature
rises above :
-2°C + ( 2°C ) = 0°C.
The compressor stops when the compartment’s temperature
reaches:
-2 °C
The Set Point is available to the user who can set the value,
in degrees centigrade, as desired within a factory set range.
This range is established to ensure the well being of the
appliance and to ensure that the performance is respected.
5.2 - COMPRESSOR TIMING
The regulator, in controlling the compressor, accounts for
certain timings. These timings have the function of:
a) To limit the number of compressor starts per hour to a
value established by its constructor.
b) To ensure that, between one stop and the subsequent
start-up of the compressor, there is a minimum delay to
equalise the internal pressures.
It is important to emphasise how the timing at point (a) counts
the delay between one compressor start-up and the next.
The values associated with each timing delay can only be
set by parameters that are only accessible to the constructor
or an authorised service centre.
The compressor timing is signalled by the compressor LED
flashing on the face of the thermostat, indicated by "comp"
�.
5.3 - MAXIMUM AND MINIMUM TEMPERATURE ALARMS
The regulator supervises the management of both the maximum
and minimum temperature alarms of the compartment.
The values are set by parameters that are only
accessible to the constructor or an authorised service centre
and should be considered as the distance from the Set Point
5.4 - EVAPORATOR FAN OPERATION MANAGEMENT
( Function not available on models with plant type K TN 12
e K TN 13 ).
The regulator functions so that the fans inside the compartment
only operate when specifically required. The parameters,
only accessible to the constructor or the authorised
service centres may be used to define
- if the fans shutdown or not during defrost