APTE®   Apparatetechnik Harald Schönstein GmbH

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Question 2
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Question 3
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Were can we find the (Zinc) anodes at your coolers?
The products were designed to manage without any anodes at all. If you think there is some kind of clear away of material we recommend to investigate about the reason, and not fighting against the effect.

How often is cleaning of the heatexchangers  necessary?
Unfortunately there  is no golden rule. The interval depends all on the media used. For marine applications it is advisable to remove the tubestack once a year (winter). There are a number of crystal solvents available, which when mixed with water  can be used for general cleaning purposes. After immersing it should be  thoroughly washed down with clean fresh water. A 3mm rod pushed trough the tubes  (opposite to the flowdirection) will remove any further obstructions. After assembling new O-seals must be fitted.

Casted aluminum and seawater - does this work?
Yes! All components getting in contact with seawater are made out of resistant material, CuproNickel for the tubes and Bronze/ Neoprene for the endcovers. Further, the aluminum alloy used is resistant too, provided installed into a closed water circuit.

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Apparatetechnik Harald Schönstein GmbH   D-22594 Hamburg   Postbox 52 0403
    Tel. +49(0)40/ 89 3003   Fax +49 (0)40/ 89 3004    Mobile +49 (0)173 2086 308
 
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