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Maintenance
Regular maintenance is required to make sure furnace is running correctly.
It is important to keep the flue areas clean and regularly change floor tile.
A good clean combustion chamber will allow the furnace to run efficiently.
Check that muffle chamber has no cracks and if so then seal with some
Refractory cement. The life of the chamber depends on several factors:
A) Keeping the rear vent clean. If blocked then Pb will stick to the walls of the
chamber thus increasing the density of the chamber. The furnace then
needs to use additional gas to maintain temperature of the chamber and
will have longer cupelling times.
It is very important to keep the rear vent clean.