Preparations
32
5.4. Filling/draining
Notice:
x Pay attention to the thermal expansion of bath oil during heating to avoid
overflowing of the liquid.
x Do not drain the bath fluid while it is hot!
Recommendation: Temperature range 5 °C to 40 °C
Check the temperature of the bath fluid prior to draining (by switching the unit on
for a short moment, for example).
x Store and dispose the used bath fluid according to the laws for environmental
protection.
Filling
Take care that no liquid enters the interior of the circulator.
x Recommended maximum filling level with water as bath fluid:
30 mm below the tank rim
x Recommended maximum filling level with bath oils:
40 mm below the tank rim
L After filling, immerse the samples in the bath or place the lid on
the bath, in case the opening is not to be used.
L The circulator provides an early warning system for low level that
may be triggered when changing samples in the bath.
Draining
x Turn off the circulator and cooling machine.
x Hold the venting grid, pull out and remove.
x Slide a short piece of tube onto the drain port (11)
and hold it into a pail.
x Unscrew the drain tap (23) and empty the unit
completely.
x Tighten the drain tap.
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