Loading ...
Loading ...
Loading ...
VDL (E3.1) 10/2020 Page 95/196
Error: If incorrect loading with an inadmissible solvent (auto-ignition temperature <200 ° C) has occurred,
proceed as follows
• Disconnect the power plug and turn off the pump.
• Let the chamber cool down to room temperature.
• Do NOT remove the “Manual ventilation” plug.
• Only ventilate when the interior temperature has cooled to room temperature. Only then open the door.
Hazard when opening the door after ventilation: After incorrect loading, open the door only when the
inner temperature has sunk to ambient temperature.
Prior to a termination of a not completed drying process make sure that the auto-ignition tem-
peratureof the solvent has been determined correctly, and that the drying temperature
reached far below this. In case of doubt, do not interrupt the drying process!
Proceeding to terminate the drying process:
• Set the temperature set-point to approx. ambient temperature
• Let the chamber cool down to ambient temperature
• Set the pressure set-point to approx. atmospheric pressure
DANGER
Explosion hazard through the formation of an explosive atmosphere in the presence
of hot surfaces after incorrect loading
Serious injury or death from burns and / or explosion pressure.
∅ Do NOT use ambient air to break the vacuum as long as the chamber is hot. Do NOT
remove the “Manual ventilation” plug as long as the drying process is still running.
Let the chamber cool down to room temperature before opening the door.
9.10 Unloading the loading material
Do not unload the loading material without technical ventilation.
Note the following points before unloading the loading material:
When unloading the loading material also in the context of intended use, an explosive mixture may form in
the working space. Therefore, a safety area of min. 1 m in front of the oven must be considered.
• Activate Standby mode on the controller before opening the door.
• Ensure equipotential bonding: The accessible installation and operating area in front of the equipment
must be conductive. This installation and operating area must be connected to the vacuum drying oven
and other equipment according to the grounding plan (chap. 6.8).
• Activate the technical ventilation (extraction):
The operator shall provide active extraction (technical ventilation according to country-specific regula-
tions – TRBS 2152 Part 2 for Germany) prior to commissioning the oven. Extraction must include the
entire installation area of the vacuum drying oven. Unloading the loading material must take place in the
safety area in front of the oven with technical ventilation.
• The personal protective equipment (PPE) of the operating personnel must be implemented
ESDprotected.
• Sweep the area for electrical equipment, preheating chamber, and controller housing at least 10
minutes with compressed air (recommended).
Loading ...
Loading ...
Loading ...