Metos SF 500, Installation And Operation Manual, Page: 13 / 25

13.2.2009 Rev. 4.0
Adjustment instructions
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6. Adjustment instructions
6.1 Setting the internal temperature and starting the manual defrost
The microprocessor-based control unit contains a series of parameters to control the cab-
inet functions. Each control unit has been pre-programmed in the factory. The user can
carry out two programming functions: setting the temperature and starting a manual de-
frost cycle.
Thermostat EKC 102D
The display of the control unit normally shows the air temperature inside the cabinet.
The set value (usually -20ºC) can be displayed by briefly pressing the middle button (2).
To increase the value, press the upper button (1). To decrease the value, press the lower
button (3). The value will be saved automatically. Within approx. 15 seconds, the display
will show the internal temperature of the cabinet.
To start a manual defrost cycle, press and hold down the button (3) for about 5 seconds.
LED (5) is on and (-d-) is shown on the display during the defrost cycle. When the defrost
cycle is over and the set value has been reached, the display will show the internal tem-
perature.
LED (4) is on when the compressor is running.
LED (6) is on when the evaporator fan is running.
With the setting of -20ºC, the temperature of products inside the cabinet is between
-18...-20ºC. Defrosting is carried out automatically every six hours. LED (5) is on when
an automatic defrost cycle is in progress.