Operation
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7–1
7
Operation
7.1
Safety advices for operation
Caution!
Examine all consumables, insulations and hoses before switching
on. Check for damages and cleanliness, especially crucible and
insulations. Operate the system only when it’s free of damages.
Warning!
Risk of burning on hot surfaces and hot metal
(until ~ 1500 °C). Wear always personal protective
equipment when you work with the machine.
Utmost caution during using graphite crucibles and
graphite moulds. The heat of these parts is only visible
when the temperatures are over 500 °C.
Danger!
Risk of burns. The surface of the bell can be very hot, depending on
the working temperature.
Danger!
Danger of crushing / shearing by swivelling the
vacuum chamber.
The vacuum chamber must be pivoted with the
hands at middle height of the chamber surface.
Figure 10: Hand centered
Danger!
Danger of crushing / shearing by moving the flask holder.
By raising or lowering the flask holder injuries can happen.
Danger!
Risk of burns. If metal is melted without the supply of protective gas,
can cause a flash fire or explosion when opening the bell.
Melt at temperatures above 500 °C always with protective gas. Use
as a protective gas exclusively argon or nitrogen.
