68
Filling and air purging an externally closed system
Caution!
-
Fill to the unit to the minimum level necessary.
-
Please refer to local regulations and internal procedures.
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When filling the unit, extra precautions such as earthing the expansion tank, fluid
container funnel and application may be necessary.
-
Personal Protection Equipment (PPE) should be worn as required by the fluid
MSDS sheets, and local regulation.
-
Please note the temperature of the thermal fluid. The fluid should be left at room
temperature for a few minutes before draining.
Warning!
Overflowing thermal fluid will create a film on surfaces, which should be cleaned up and
properly disposed of as soon as possible in accordance with the MSDS information. If
thermal fluid is spilled over the unit, the unit should be immediately turned off, and
Huber-trained personnel consulted.
Failure to observe the above precautions may mean that the unit will not comply with
all of the requirements of DIN EN 61010-2-010.
Filling
-
Lift the bath lid / cover from the bath / inlet nozzles
-
Carefully pour a suitable thermal fluid into the expansion tank, filling hole with
help of appropriate accessories such as a funnel and / or beaker. The thermal
fluid flows via the expansion tank into the machine, then through the hoses into
the external application.
-
Start the filling process by selecting the
Main menu point
start&stop
. Continue
by pressing the sub menu point
start air purge.
The filling process is finished when the bath is filled sufficiently (for devices with
heating, heating coils have to be beneath the thermal fluid level, corresponds to
minimum bath level / minimum filling
) and no air bubbles should remain in the
application (e.g. double jacketed reactor) The controller monitors the filling level
and a corresponding message will be displayed in the graphic display.
-
Let the
Air purging
program run for a couple of minutes. This will prevent
captured air bubbles from remaining in the system which might have been the
cause for a later safety switch off of the temperature control.
-
Note the volume change of the thermal fluid (especially with oils) in connection
with the operating temperature. At the lowest temperature required, the fluid
must be above the minimum mark in the sight glass, and it must not overflow at
the highest temperature required. In case of over filling, drain off the excess fluid
into a suitable container via the expansion vessel drain (9) or drain (8).
