Harman International Industries Inc MICROCORE ユーザーズマニュアル

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evaporation (sublimation) may be expected; otherwise the system must be 
heated and dried while switched off.
A system without visible internal formation of ice or condensation should be 
heated up with its own heat dissipation, as homogeneously (and subsequently 
as slow) as possible; the ambient temperature should then always be lower 
than the one of the outgoing air. 
If it is absolutely necessary to operate the cold system immediately within 
warm ambient air, this air must be dehydrated. In such a case, the absolute 
humidity must be so low that the relative humidity, related to the coldest 
system surface, always remains below 100%.
Ensure that the enclosed air is as dry as possible when powering off (i.e. before 
switching off in winter, aerate the room with cold, dry air, and remove humid 
objects such as clothes from the room).
These relationships are visible from the following climatogram. For a con-
trolled procedure, thermometer and hygrometer as well as a thermometer 
within the system will be required.
9) @4 '* +20 °C and a relative humidity 
of 40% is switched off in the evening. If the temperature falls below +5 °C,
the relative humidity will rise to 100% (7 g/m³); dew or ice will be forming.
9) B4 '* +20 °C and a relative 
humidity of 40%. On all parts being cooler than +5 °C, dew or ice will be 
forming.
Appendix