Retsch MM 500 Vario, Manual

Page: 45 / 87

Operating the Device
45
6.6.1 Opening the grinding jar support
Fig. 20: Clamping stations
Component
SB Locking pin
MH Clamping device
FR Locking wheel
Open the clamping device as follows:

Pull the locking pin (SB) up out of the groove and turn it 90°. The lock is released.

Turn the locking wheel (FR) on the grinding jar holder (MH) counterclockwise until the
maximum clamping range is available.
The latched locking pin reliably prevents the clamping device from opening automatically.
If the locking pin (SB) cannot be pulled upwards to release it, the release must not be forced
with a hammer or similar tool. Otherwise the hardened locking pin can break off.
Retighten the locking wheel (FR) clockwise briefly, then the locking pin can be freely moved
again.
6.6.2 Inserting the grinding jar
Fig. 21: Inserting the grinding jar
SB
MB
FR
MH
SB
MH
FR