Users Manual

03-2019 0193 00 67
MAINTAINING THE BREWING
UNIT
z4000
After 10 000 dispensed items or every 6
months, the coee group requires a small
amount of maintenance work in order to
optimise how it works over time.
To perform the maintenance work, the unit
needs to be removed as follows:
1. Disconnect the coffee outlet nozzle from
the unit by rotating it 90° away from the
connecting rod and pull it outwards.
2. Turn the unit end stop lever, rotating it un-
til it is in a horizontal position.
3. Remove the coffee unit.
1
2
3
4
5
6
7
8
1
10
12
2
7
9
15
11
13
14
Fig. 44
1. Upper piston
2. Coffee outlet nozzle
3. Lower scraper
4. Connecting rod
5. Lateral screw
6. Key
7. Upper seal
8. Unit end stop lever
9. Upper filter
10. Lower filter
11. Lower scraper
12. Lower piston
13. Lower seal
14. Piston guide ring
15. Upper scraper
16. Unit cover