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MK / MKT (E5) 08/2020 page 106/162
17. Notes on refrigerating operation
Defrosting:
BINDER chambers are very diffusion-proof. To ensure high temperature precision there is no automatic
cyclic defrosting device. The refrigerating system largely avoids icing of the evaporation plates. However,
at very low temperatures the moisture in the air can condense on the evaporator leading to icing.
Always close the door properly.
Operation with temperature set-points above +5 °C / 41 °F at an ambient temperature of 20 °C / 68 °F:
The air defrosts the ice cover automatically. Defrosting is continually performed.
Operation with temperature set-points below +5 °C / 41 °F:
Icing on the evaporator is possible. Defrost the chamber manually.
With temperature set-points below +5 °C / 41°F, regularly defrost the chamber manually:
• Set the temperature to 60 °C / 140°F (Manual Mode).
• Let the chamber operate for approx. 1 hour with the door closed
. Remove the access port
plugs.
Too much ice on the evaporator is noticeable by reduced refrigerating performance.
Operation with temperature set-points below 0 °C / 32 °F:
While operating the chamber with set-points below 0 °C / 32 °F condensation is possible at the inner surface
of the door around the door gasket.
In case of heavy condensation, check tightness of the door gasket.
After one or two days operation at a set-point below 0 °C / 32 °F a thin ice layer can cover the inner chamber
door, the front margins of the inner kettles and may be the glass window.. The amount depends on the
ambient temperature and humidity. This does not influence the proper function of the refrigerating system.
Refrigerating performance decreases while operating the chamber at temperatures below
0 °C / 32 °F due to icing of the evaporators. For this reason defrost the chamber regularly,
e.g. once a week.
NOTICE
Danger of overflowing due to uncontrolled defrosting of icing on the evaporator.
Damage to the surroundings of the chamber.
After several days of refrigerating below +5 °C / 41 °F:
∅ Do NOT directly turn off the chamber.
Manually defrost the chamber (see description above).
Then, shut down the chamber at the main power switch (1). Keep removed the access
port plugs.
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