Binder 9020-0146, Руководство по эксплуатации

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MK (E3) 07/2009 page 46/70
13. Refrigerating operation
13.1 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. Neverthe-
less, 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 25°C /
77°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 unit manually.
With temperature set-points < +5°C / 41°F, regularly defrost the unit manually:
−
Let the unit operate for about 2 hours in Idle Mode with closed door.
Excessive frosting of the evaporator is indicated 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 < 0°C / 32°F a thin ice layer can cover the inner unit door ,
the front margins of the inner kettles and may be the glass window.. The amount depends of 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 < 0°C /
32°F due to icing of the evaporators. For this reason defrost the chamber regularly, e.g. once
a week.
14. Options
14.1 Communication software APT-COM™ 3 DataControlSystem (option)
The temperature test chamber is regularly equipped with an Ethernet interface (7) to which the BINDER
communication software APT-COM™ 3 DataControlSystem can be connected. The MAC Address is
indicated next to the Ethernet interface. In adjustable intervals, the actual temperature value is put out.
Programming can be performed graphically via PC. Up to 30 chambers with RS 422 interface can be
cross-linked. For further information, please refer to the operating manual of the BINDER communication
software APT-COM™.
The additional RS422 interface (13) only serves for service purposes. Do NOT connect it to any network.
The interface is labeled accordingly.