VD (E2.1) 10/2011 page 13/83
DANGER
Explosion hazard.
Danger of death.
∅ Do NOT introduce any substance into the oven which is combustible or explosive at
working temperature.
∅ NO explosive dust or air-solvent mixture in the inner chamber.
∅ Do NOT use the vacuum drying oven for drying or heat treatments leading to release of
combustible vapors able to form an explosive mixture with air.
Any solvent contained in the charging material must not be explosive or inflammable. I.e., irrespective of
the solvent concentration in the steam room, NO explosive mixture with air must form. The drying
temperature must lie below the flash point or below the sublimation point of the charging material.
Familiarize yourself with the physical and chemical properties of the charging material, as well as the
contained moisture constituent and its behavior with the addition of heat energy and changes in pressure.
Familiarize yourself with any potential health risks caused by the charging material, the contained
moisture constituent or by reaction products that may arise during the drying process. Take adequate
measures to exclude such risks prior to putting the vacuum drying oven into operation.
DANGER
Electrical hazard.
Danger of death.
∅ The oven must NOT become wet during operation or maintenance.
The vacuum drying ovens were produced in accordance with the relevant VDE regulations and were
routinely tested in accordance to VDE 0411-1 (IEC 61010-1).
CAUTION
The inner chamber will become hot during operation.
Danger of burning.
∅ Do NOT touch the inner surfaces or the charging material during operation.
In the case of operation with inert gas, the unit is supplied with an oxygen-displacing gas (e.g. N
2
). The
gas emerging from the system must therefore be removed from the installation area by means of a
suitable extraction system (see technical ventilation measures in the guideline BGI/GUV-I 850-0 on safe
working in laboratories (formerly BGR/GUV-R 120 or ZH 1/119 laboratory guidelines issued by the
employers’ liability insurance association) (for Germany).
With use of a vacuum system or a vacuum pump, observe the permitted gas inlet
temperature. Observe the safety instructions of the pump manufacturer.
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