36
2016/01 Rev. 0.0
OptiFresh (Bean) NG 2.0
3.6.2 Service life
The service life of the ceramic grinding disks is approximately 3x longer than steel grinding disks. The
service life depends on the type of coffee beans* and is approx. 3,000 kg of coffee beans. With an
average measure of 7.5 g/sec. that makes approx. 400,000 shots.
When you reach these grind quantities, we advise you to replace the complete grinder. Not only do the
grinding disks need replacing, but the bearings, carbon brushes and drive belt have also reached their
maximum service life. In case of a damaged grinding disk (due to stones or other foreign objects) they
can be ordered and replaced as a separate set.
* light to dark roast, dry or oily, caramelized
3.6.3 Run in period grinding discs
Tests have shown that new ceramic grinding discs have a
run in period of 10 kg of coffee beans (about 1350 cups at
7.5 g / 1000 cup at 9.5 g.).
We recommend to re-adjust (finer) the grinder after
this period.
3.6.4 Grinding disk replacement
1. Follow chapter 3.6.1 Basic adjustment till point 5.
2. Switch the machine OFF.
3. Loosen the screws [1] and dismantle the grinder
head [2].
4. Remove the grinding disks [3&4] by loosening
the three screws [4].
5. Thoroughly clean all parts.
6. Fit the new grinding disks in reverse order.
7. Position the lower plastic sealing disc [5] so it
shuts the bottom of the grinder spout.
8. Set the distance between the grinding disks so
that a 0.40 mm feeler gauge fits between them.
9. After adjusting the grind fineness, carefully check
the operation of the brewer. Adjust the grind
fineness as necessary!
WARNING
• Do not drop the ceramic grinding disks.
• The grinding disks must never come into contact
with one another.
• After assembly, adjust the grind fineness.
2
3
4
1
5
