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MKF / MKFT (E5) 06/2020 page 50/176
6. Start up
6.1 Turning on the chamber
After connecting the supply lines (chap. 4), you can start up the chamber.
• MKF 56: Turn on the main power switch (1) in the lateral control panel at least one hour before operat-
ing the chamber.
• MKF/MKFT 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 has been turned on
and yet the controller display is dark, the display is in stand-by mode. Press on the touchscreen to ac-
tivate it.
• Open the water-tap for supply. Alternatively, fill the freshwater can (internal water can: regular with
MKF/MKFT 115, 240, 720, external water can: optional for MKF 56).
• The humidifying and dehumidifying system must be activated (deactivated operation line “Humidity
off”, chap. 7.3 and setting “Control on”, chap. 6.3).
After the first turning on of the humidity or after an interruption of the power supply the relative humidity
will increase after a delay of approx. 20 minutes. During this period, the relative humidity can drop con-
siderably.
MKF 56: The refrigerating and dehumidification functions are available only one hour after turning on the
main power switch (1). This is indicated by the information message “Preheating phase” in the controller
display.
MKF/MKFT 115, 240, 720: The refrigerating and dehumidification functions are available only one hour
after turning on the main power switch (1) and the rear power switch (12). This is indicated by the infor-
mation message “Preheating phase” in the controller display. After 1 minute the information message
“Water can empty” appears on the controller display. You can reset this message only after the 1-hour
preheating phase.
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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