[3dem] cooling water supply

[reinhard rachel]

Some years ago, we had to replace the first water chiller for our TEM (FEI) by a new one, and we choose an air-cooled version. Later, we found this not to be sufficient for periods of really hot summer days (rare, but can happen even in Germany). The air-cooled system was, at that time, not located in a room with AC. At above 29 or 30 C ambient temperature, it does not cool any more. We had to shut down the scope for > 2 weeks. 
Later, the air-cooled system was modified and equipped with external water cooling, which is cooled by an in-house (perfectly reliable, in our case) water supply, in fact cooling water, which is too cold to directly run thru the scope. 
Since then, everything is fine. 
Therefore, if possible, I would recommend a water-cooled system. 
Kind regards,
Reinhard Rachel


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PD Dr. Reinhard Rachel
Universitaet Regensburg
Centre for EM - NWF III - 
@Institute for Anatomy
Universitaetsstr. 31
D-93053 Regensburg - Germany
tel +49 941 943 2837, 1720
fax +49 941 943 2868
mail reinhard.rachel at biologie.uni-regensburg.de
office: VKL 3.1.29