6.6 Inserting the Grinding Jar
Strong vibrations and loud noise
Uneven loading
− The device can generate particularly strong vibrations and loud noise if
loaded unevenly.
• Always insert two grinding jars of equal size, even if you only want
to grind one sample. In this case leave the second grinding jar
empty (no grinding balls, no sample material)!
• Switch the device off immediately if it is vibrating strongly and
making a loud noise, and check the number, the gross weight and
correct position of the grinding jars.
Wear or damage to the grinding balls and grinding jars
Use of different materials
− Greater wear or damage is possible when operating the device with
grinding balls and grinding jars whose individual components are made of
different materials.
• Only use grinding balls and grinding jars made of the same material.
Damage to the device
Grinding jars incorrectly inserted
− In order to prevent damage to the device during grinding, the grinding jars
must be correctly and firmly positioned in the guide of the grinding jar
supports when inserted.
• When inserting the grinding jars, ensure that the grinding jars do
not become misaligned, but are positioned firmly and correctly in
the grinding jar guide.
• Use the opening aid to clamp the grinding jars firmly in the
grinding jar supports.
6.6.1 Opening the grinding jar support
Open the grinding jar holder as follows:
Pull the locking pin (6) up out of the groove and turn it by about 60°. This releases the lock. If
the locking pin cannot be moved, it is jammed. In this case, turn the locking wheel back and
forth a little to loosen the locking pin.
Turn the locking wheel (7) on the grinding jar holder anti-clockwise until the maximum
clamping range is available
Briefly tighten the locking wheel (7) clockwise, after which the locking pin can move freely
again.
NOTEThe locked locking bolt reliably prevents the grinding jar holder from opening
automatically.
If the locking pin cannot be pulled upwards to release, then the release must not be forced with
a hammer or similar tool. Otherwise, the hardened locking pin may break off.
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