JULABO LH 85 High Dynamic Temperature System - Manual (Page 32)

Preparations
32
5.8. Degasifying
S 180.00
-DEGAS-
Setp: 180.00°C
IntAct 78.00°C
ExtAct: --.--°C
Control: Intern
degasing activ
If the temperature system is operated an automatic degasifying is
carried out after the start.
During the degasifying unwelcome components of the bath liquid
are are drawn off .
Examples:
 Air bubbles which were enclosed in the bath liquid during the
filling for the unit.
 Slightly volutile components which are eventually in the fluid.
 Eventually existing water components, which reached the bath
liquid during the storage.
The automatic degasifying is a part of the program in the unit,
which is always active in the background. Experience shows that
the activity is only noticed after a first or new filling of the unit.
During the heating-up phase, e.g. to a working temperature of
180°C, the VFD-Info-Display shows >DEGAS<.
Parallely to this, in line 4 in the DIALOG-DISPLAY the message
>Degasifying active< is inserted. In this phase the temperature
rise is stopped, the pump motor and the ventilation valve are
activated alternately (audible). During the heating-up phase this
degasifying mode can be repeated with the most different
temperatures.

The automatic degasifying can be stopped by :
Operating the key
or
adjusting the set temperature on at least 50°C lower than the
current set temperature.
Caution: Escape of vapors / gas
 The necessity of degassing requires that a closed system is not entirely sealed.
Especially at increased working temperatures vapor / gas may escape.
Ensure sufficient ventilation at the place of installation!With different
substances the change-over to the steam phase and therefore also an
enormous change of volume is carried out very quickly. The fluid, for which
there is no more room in the internal reservoir, now has to drain off controlled
via the overflow.
Important:
Connect a piece of tubing to the overflow connector (15) and drain into a
suitable vessel. (min. 2 liters) (M16x1 / wrench 19 mm), which always has to
be placed lower than the exit „Overflow“
5.9. Draining
Notice :
 Do not drain the bath fluid while it is hot or cold !
Check the temperature of the bath fluid prior to draining (by switching the unit on
for a short moment, for example).
 Store and dispose the used bath fluid according to the laws for environmental
protection.