BD / BF / ED / FD / FED (E3.1) 02/2022 page 64/116
Inert gases in high concentrations is hazardous to health. They are colorless and almost odorless and
therefore practically imperceptible. Inhalation of inert gases can cause drowsiness up to respiratory arrest.
When the O
2
content of the air decreases below 18%, there is risk of death from lack of oxygen. Any gas
that might escape has to be led out via good room ventilation or a suitable exhaust system.
DANGER
Risk of suffocation through high concentration of inert gas.
Death by suffocation.
∅ Do NOT set up chambers in non-ventilated recesses.
Ensure technical ventilation measures.
Observe the relevant regulations for handling inert gases.
Close the gas supply when decommissioning the chamber.
Inert gases, which are heavier than air, may accumulate in low-lying areas of the installation
site.
The “Mostly gas-tight version” reduces the loss of gas.
Setting (sample values):
If you want to flush the chamber with an air exchange rate of 1 per hour, set the flow rate on the
pressure reducer according to the interior volume.
Chamber with 56 l internal volume: The flow rate corresponding to 56 l / h is 0.9 l / min.
Chamber with 115 l internal volume: The flow rate corresponding to 115 l / h is 1.9 l / min.
Chamber with 260 l internal volume: The flow rate corresponding to 260 l / h is 4.3 l / min.
The air flap does not close the exhaust duct completely. The delivered plug serves to avoid loss of intro-
duced inert gas via the exhaust duct. Due to special demands of heat resistance, use the delivered plug
only.
NOTICE
Danger of inflammation when using an inappropriate plug.
Damage to the chamber and ist surroundings.
Use ONLY the supplied plug to close the exhaust duct.
For drying purpose, please remove the plug in order to permit dissipation of the generated vapor, which
would lead to condensation in the inner chamber.
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