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VDL (E3.1) 10/2020 Page 96/196
9.11 Removing the full condensate catchpot of the pump
Do not remove the full condensate catchpot of the pump without technical ventilation
Note the following points before removing the condensate catchpot:
When removing the condensate catchpot spilling of the solvent may occur.
• Ensure equipotential bonding:
The accessible installation and operation area of the equipment must be conductive. This area and the
vacuum pump must be connected with the vacuum drying oven 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 manipulating the condensate catchpot of the pump.
Extraction must include the entire installation area of the VDL and the vacuum pump, especially the area
of the catchpot (when removing it) and the exhaust air of the vacuum pump. Removing the full conden-
sate catchpot must take place under technical ventilation.
• Use ESD protected personal protective equipment:
The personal protective equipment (PPE) of the operating personnel must be implemented ESD pro-
tected. This includes also gloves.
9.12 Preparing a new drying process
Before starting a new drying process with a different auto-ignition temperature, determine the auto-ignition
temperature of the solvent according to its safety data sheet. In the case of solvent mixtures, use the lowest
auto-ignition temperature.
Check all settings (drying temperature, pressure set-point and safety controller setting). If appropriate,
make sure that the new temperature set-point and safety controller value are entered on the controller.
With each change of the temperature set-point, observe the safety controller setting.
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