MK / MKT (E5) 03/2019 page 38/158
5.8 Performance when opening the door
When you open the door the fan starts running with minimum speed (30 %).
After 60 seconds from opening the door, heating, refrigeration, and fan turn off. The compressor contin-
ues operating during 5 minutes without cooling function.
After closing the door, heating, refrigeration, and fan turn on again.
6. Start up
6.1 Turning on the chamber
After connecting the electrical supply (chap. 4), you can start up the chamber.
• MK 56: Turn on the main power switch (1) in the lateral control panel at least one hour before operat-
ing the chamber.
• MK/MKT 115, 240, 720: Turn on the main power switch (1) in the lateral control panel and the rear
power switch (12) at least one hour before operating the chamber
The lit pilot lamp shows the chamber is ready for operation. When the chamber is turned on and yet the
controller display is dark, the display is in stand-by mode. Press on the touchscreen to activate it.
MK 56: The refrigerating function is available only one hour after turning on the main power switch (1).
This is indicated by the notification “Preheating phase” in the controller display.
MK/MKT 115, 240, 720: The refrigerating function is available only one hour after turning on the main
power switch (1) and the rear power switch (12). This is indicated by the information message “Preheating
phase” in the controller display.
Warming chambers may release odors in the first few days after commissioning. This is not a quality de-
fect. To reduce odors quickly we recommend heating up the chamber to its nominal temperature for one
day and in a well-ventilated location.
For control reasons the refrigeration machine starts with a delay time. The refrigeration ma-
chine also turns off with a 5 minutes delay. This explains why the compressor may remain
operating also during positive temperature jumps.
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