Technical Information
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CVA 610/CVA 615 Coffee Systems
4.10 Grinder Overload Protection
If the grinder becomes blocked by a foreign object (e.g., stone or pebble), the slip
coupling will interrupt the drive between the motor and the grinder.
The grinder motor (Figure 4-12, Item 1) drives the mounting (Figure 4-12, Item 3) via
the carriers (Figure 4-12, Item 2). This rotary force transfers through the balls (Figure
4-12, Item 5) to the grinder cone (Figure 4-12, Item 6).
Figure 4-12: Components of the Grinder Overload Protection
If the grinder cone becomes blocked, the balls will be pressed into the mounting (see
Figure 4-13, Item C). The drive force will be interrupted, and the worm gear will
continue to operate via the mounting.
Figure 4-13: Grinder Cone Ball Positions under Various Operating Conditions
1 Grinder motor
2 Carrier
3 Mounting
4 Spring
5 Ball
6 Grinding cone
7 Washer
8 Intake worm gear
Normal operation
B Overload protection activated
C Force transfer interrupted