Memmert WNB 10, Руководство по эксплуатации, Страница: 14 / 20

BASIC page 14
8 Use of the cover (special equipment) 8 Use of the cover (special equipment)
Gable cover The gable cover (may be ordered as already mounted special equipment) should always
be closed in order to prevent evaporation of thermostating liquid and to obtain optimal
temperature distribution. The gable shape of the cover makes sure that condensed water
will not drop down into the loads.
Flat cover For positioning of test fl asks on top of the bath, a fl at cover (special equipment) may be
used. The size of the holes in this cover can be adapted to the fl asks with ring inserts.
The rings may therefore only be inserted or taken off, if the bath is cooled down.
Note that during operation the fl at cover and the gable cover Note that during operation the fl at cover and the gable cover
heat up to the temperature of the thermofl uid! heat up to the temperature of the thermofl uid!
9 Level control (special equipment) Level control (special equipment)
2 different fi lling levels can be maintained constant if the unit is fi tted with a level control system. When
using water as thermostating liquid, connect the feed pipe with tubing to the mains water supply. The
drain must be connected with tubing to an appropriate container or sink.
Make sure, that the tubing cannot be clogged or bended, and that it continually runs downhill.
Please note, that the outfl owing water may be hot! Please note, that the outfl owing water may be hot!
Supply and drain are indentifi ed by arrows. Use temperature
resistant material for the tubing.
If the second overfl ow is not required, it must be closed with
a sealing cap.
The evaporation loss can be compensated through a
slightly open water supply (dripping) and can be monitored
through the “observation window“.
The level control system cannot be retrofi tted!
Warning – bath hot when operating Warning – bath hot when operating
observation
window
supply
drain
drain