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LAUDA Immersion Coolers
ETK 30, ETK 50
6
Starting up
Connect the instrument only at an earthed wall socket. Compare the volatage and the
frequency mentioned on the rating label with your network.
Suspend the cooling coil made from high-grade stainless steel into the consuming device
to be cooled. Note that the maximum cooling capacity is only obtained with completely
immersed cooling coil. Clamp the cooling coil at a laboratory stand.
The temperatures at the surface of the cooling coil are clearly lower than in the bath directly
especially if the baths are not circulated. If the surface temperature is lower than the
freezing point of the bath liquid, ice will be formed which results in a reduced cooling
capacity. Use bath liquid with a lower freezing point (see leaflet "LAUDA bath liquids").
The bending radius of the flexible tube must not be smaller than 150mm. Otherwise the
tube might break.
ETK 50: Adjust the desired temperature.
ETK 30: Without temperature control
Switch on the instrument at the mains switch (green lamp goes on).
Both condensing units are switched on by the mains switch. However the cooling only
starts with delay of apporox. 3-5 minutes.
If the thermostating liquid has obtained the desired value the control device operates. Pilot
lamp "Cooling" goes on and out.
ETK 50: The indicated temperature accuracy of ±0.5°C can be obtained only at slight
stirring in the bath. In stagnant liquid there is a thermal stratification.
If the cooling coil is no longer required put in into the holder.
YAFE0002/04.07.03
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