JULABO Magnum 91 Temperature System - Manual (Page 30)

Preparations
30
5.7. Degasifying
78.00
S 180.00
-DEGAS-
Srtp: 180.00°C
IntAct 78.00°C
ExtAct: --.--°C
Control: Intern
degasing activ
If the temperature system is operated in a closed, external consumer,
>Mode: sys close<, 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.
When operating in the >Mode: sys open< there is no need for
degasifying, because the unwelcome components can escape via the
open bath tank.
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:
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 (14) and drain into a suitable vessel. (min.
2 liters)
(M16x1 / wrench 19 mm), which always has to be placed lower than the exit
„Overflow“