FRITSCH PULVERISETTE 7 premium line - Manual (Page 40)

5.8.2 Safety measures against an excessively high pressure
Safety measures against an excessively high pressure
1 Recess
To prevent damage to the grinding bowls and the device, the flat seal
has a small recess on its external diameter. The pressure may be
released at this point if the insert is lifted by the internal pressure in the
bowl. That is the case with an internal pressure of about 20 bar.
Use genuine seals only.
WARNING!
Never use brute force to open the bowl
5.9 Handling the grinding bowl
5.9.1 Design
1 Compl. bowl
2 Compl. lid
3 Flat seal
4 Locking hook
5 Compl. handle
6 Valve plug
7 Press-on sleeve
8 Actuating pin
9 Lid insert
Using the device
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