FRITSCH PULVERISETTE 4 classic line - Manual (Page 42)

Using the additional clamping system, the following steps can also be
completed in the glove box with subsequent locking into the Vario-
Planetary Mill:
n Connect the gassing hose (a) to the inert gas supply using the pro-
vided hose clamp (b).
n Screw the ventilation attachment (e) onto one of the two valves (d).
n Place the coupling (c) of the gassing hose on the free valve. When
doing so, press the lever of the coupling and push the coupling along
the neck of the valve until it goes no further. Release the lever.
Using the additional clamping system, the closed grinding
bowl can also be tensioned and gassed outside of the
device. (See Ä Chapter 7.1.1 ‘Locking the additional
clamping system into place’ on page 39)
7.1.2.2 Gassing
n Slowly open the inert gas supply.
n Press a thin object (e.g. hex key) onto the top of the ventilation
attachment (e) so that the air can escape from the grinding bowl.
n The inert gas now purges the air from the grinding bowl.
n The duration of purging has to be determined through experimenta-
tion.
It depends on grinding bowl size, filling, and gas supply, among other
factors.
n To end purging, close the inert gas supply and release the ventilation
attachment.
n Screw off the ventilation attachment.
n Remove the gassing hose. To do so, press the lever.
CAUTION!
Only switch on the device when both coupling and ventila-
tion attachment have been removed.
Overpressure may occur during grinding!
Accessories
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