Keison CARBOLITE AAF 11/18, Инструкция по установке, эксплуатации и обслуживанию

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AAF, OAF, GSM, VMF
General Operating Advice
Heating element life is shortened by use at temperatures close to maximum. Do not leave the
furnace at high temperature when not required. The maximum temperature is shown on the
furnace rating label and on the back page of this manual.
When heating large objects, in particular poor conductors, avoid shielding the thermocouple from
the heating elements.
The thermocouple is intended to sense the temperature near the heating
element, but if a large object is placed in the chamber it may record the average temperature of the
object and the elements, which can lead to overheating of the elements.
Allow large objects to gain
heat at a lower temperature and then reset the controller to a temperature close to the desired
maximum.
When heating materials which produce smoke or fumes, the chimney must be correctly fitted and
unobstructed.
Otherwise, soot can accumulate in the chamber and could possibly cause an
electrical breakdown of the heating element.
If the furnace is used to heat materials which emit smoke or fumes, regularly heat it up to
maximum temperature for one hour without load to burn away the soot.
Materials such as case hardening compounds and other reactive salts may penetrate the furnace
chamber lining and attack the wire elements, causing premature failure.
Use of a hearth tile may
be advisable: please consult our technical department.
3.4 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 . Chamber
furnaces are not gas tight, so it should be understood that gas usage may be high, and that the
chamber is likely always to contain some air.
Residual oxygen levels of 1% may be expected.
3.5 Operator Safety
The furnace incorporates a safety switch which interrupts the heating element circuit when the
door is opened.
This prevents the user touching a live heating element, but also prevents the
furnace from heating up if the door is left open.
Avoid burns. Carbolite can supply tongs, face masks, and heat resistant gloves. Before you
remove a hot object from the furnace make sure you have a safe place to put it down.
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