NOTICE Always start the grinding process fist, before start feeding the sample material!
7.2.3 Feeding Sample Material
NOTICE Start the SR 300 first, before start feeding the sample material!
The maximum feed grain size must not exceed 25 mm.
Fill the sample material slowly and continuously into the feed hopper (F) while the device is
running.
Pay attention to the motor noise during the filling. If the rotor speed changes audibly due to
excessive sample amount, immediately reduce the supply of the sample material.
During the grinding process, pay attention to the amount of grinding material in the collecting
receptacle (M). The collecting receptacle must be emptied as soon as the filling level
reaches 90 % of its volume.
For the batch-wise or continuous operation, the SR 300 can be retrofitted with a 30 l
collecting receptacle and the vibratory feeder DR 100, both available as optional
accessories.
Damage to mechanical components
Rotor blocking
Due to the high pulling power of the rotor, blockages can occur when
feeding large-grained, harder sample material.
Switch off the device immediately after blocking and remove the
blocking grinding material.
Reduce the feed of the sample material into the feed hopper.
Fill larger and harder sample material slowly and gradually into the
feed hopper.
7.2.4 Stop Process
Press the button (B1) to stop the grinding process.
The status LED (B3) lights up, the rotor idles and the electric locking mechanism is
automatically unlocked as soon as the rotor has come to a complete halt.
NOTICE Stop the grinding process only when there is no more sample material left in the
grinding chamber!
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