6.0
Basic Operation
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Before introducing the gas supply through the gas
box ensure the gas control valve on the front of the
gas box is turned off; the gas control valve should be
in the horizontal position.
Note:
The gas pressure is controlled at the gas source not by the gas
box.
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Once the gas box is connected to the gas supply, set
the required gas pressure. This should be
no greater
than 1.5 bar
(22 psi).
WARNING:
If the inert gas package is
connected to a work tube end seal
DO NOT set the pressure above
0.05 bar (50mbar)!
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Carefully turn the gas control valve to the vertical pos-
ition.
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Standard
gas box: The gas will be introduced
into the vessel.
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Advanced
gas box: Gas flow to the furnace will
be controlled by the furnace controller outputs
via the solenoid valve, provided that the furnace
is connected to a power supply and is switched
on.
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