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VDL (E3.1) 10/2020 Page 85/196
• Make sure that the user's equipment is ESD protected.
• Place the material to be dried in the chamber.
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• Set the pressure set-point on the controller.
Heating will start only when a vacuum corresponding to the pressure threshold of 100 mbar)
is reached.
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The drying process is running.
After completing the drying process or when cancelling the drying process
When the pressure drops to the pressure set-point, the drying process is finished. If the drying monitor-
ing (chap. 11.6) is activated, a corresponding message is displayed.
• Make sure that the technical ventilation is activated
• Make sure that equipotential bonding has been established according to the grounding con-
cept
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• For ventilation, set the pressure set-point to atmospheric pressure
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• Switch the vacuum drying oven on the controller to standby mode (not completely de-ener-
gized)
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• Make sure that the user's equipment is ESD protected.
• Remove the drying material
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• Continue sweeping the electrical installation area, preheating chamber and controller hous-
ing with an overpressure of at least 25 Pa (recommendation: >40 Pa) for at least 10 minutes
(recommended). Check the excess pressure on the manometer. Only then shut off the com-
pressed air supply.
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For emptying the pump
• Make sure that the pump is turned off.
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• Make sure that the technical ventilation is activated
• Make sure that equipotential bonding has been established according to the grounding con-
cept
□
• Make sure that the user's equipment is ESD protected.
• Remove the full condensate catchpot of the pump
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Before starting a new drying process
In case of a new solvent with a different auto-ignition temperature:
• Determine the auto-ignition temperature of the solvent from its safety specifications. In the
case of solvent mixtures, use the lowest auto-ignition temperature
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• Make sure that the technical ventilation is activated
• Make sure that equipotential bonding has been established according to the grounding con-
cept
□
• Sweep the area for electrical equipment, preheating chamber and the controller housing
with compressed air at maximum overpressure for a defined time (chap. 9.3.2).
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• Turn on the chamber and check the settings (drying temperature, pressure set-point and
safety controller setting)
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• Now you can load the chamber and start the new drying process. Follow all safety measures
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