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VDL (E3.1) 10/2020 Page 19/196
1.7.4 Safety instructions on the charging material
The temperature class of the inner chamber according to IEC 60079-0 can be T1, T2, or T3. Only introduce
substances with an auto-ignition temperature that is higher than 200 °C / 392 °F. You can use a solvent
which would form an explosive mixture with air under normal conditions.
If the auto-ignition temperature of a solvent contained in the drying material is exceeded during the drying
process, there is an immediate risk of fire and explosion. This chamber is not suitable to dry substances
with an auto-ignition temperature below 200 °C / 392 °F. Substances falling under explosion group / gas
group IIC are not permitted (e.g. carbon disulfide, hydrogen).
Combustible dusts are generally not permitted, neither in the vicinity nor as a load.
DANGER
Explosion hazard due to unsuitable drying material.
Serious injury or death from burns and / or explosion pressure.
∅ Do NOT introduce any substance with an auto-ignition temperaturebelow 200 °C / 392
°F into the chamber
∅ Do NOT introduce combustible dusts into the chamber.
∅ Do NOT introduce any substance which tends towards exothermal decomposition into
the chamber.
∅ Do NOT introduce any substance which comes under the explosive substance law into
the chamber.
∅ Do NOT introduce energy sources such as batteries or lithium-ion batteries into the
chamber.
∅ Do NOT introduce any substance which could lead to release of toxic gases into the
chamber.
Familiarize yourself with the physical and chemical properties of the charging material, as well as the con-
tained moisture constituent and its behavior with the addition of heat energy and changes in pressure. No
dangerous chemical reactions must occur during the drying process.
DANGER
Fire and explosion hazard caused by chemical reactions with the addition of heat
energy and changes in pressure.
Serious injury or death from burns and / or explosion pressure.
Make sure that no dangerous chemical reactions of the loading material can occur dur-
ing the drying process.
Familiarize yourself with any potential health risks caused by the charging material, the con-
tained moisture constituent or by reaction products that may arise during the drying process.
Take adequate measures to exclude such risks prior to putting the VDL vacuum drying oven
into operation.
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