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cybercool indoor chiller original instructions
© STULZ GmbH – all rights reserved EN/09.2017/G44
Refrigerant charge - Quantity and Purity
Quantity
An unsufficient charge causes the formation of bubbles in the sight glass or in extreme cases the triggering of
of cooling capacity and to high superheating temperatures, which have a disadvantageous effect on the com-
pressor lifetime.
If a leak is detected:
rel
.
evacuate the refrigerant circuit resp. the closed off section by a vacuum pump.
An overfilling of the circuit makes the condensation pressure rise and by that the power consumption of the
After repairing a leak, check the refrigeration circuit on tightness within one month.
Purity
Bubbles in the sight glass indicate that the charge is unsufficient or that the filter drier is clogged.
A pollution of the filter drier, whose origin task is to clear the refrigerant from impurities and humidity, can be
detected by a temperature difference upstream and downstream the filter drier.
7.3 Refrigerant circuit
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