VERDER CARBOLITE GERO HRF 7/112, Инструкции по установке, эксплуатации и обслуживанию

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cause an electrical breakdown of the heating element. If the furnace is used to heat
materials that emit smoke or fumes, regularly heat it up to maximum temperature for
one hour with the chamber empty to burn away the soot.
5.3 Atmospheres
When an optional gas inlet is fitted, there is a label near the inlet saying "INERT GAS
ONLY". In practice, inert or oxidising gases may be used, but not combustible or toxic
gases.
The chamber is not gas tight, the gas usage may be high and the chamber is always
likely to contain some air. Residual oxygen of approximately 1% to 2% is to be
expected.
5.4 Operator Safety
In the industrial models power is cut to the elements and the fan if the door is opened;
the operation of this switch should be checked periodically – see section .
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5.0 Operation