1. Turn the machine off 2. Remove the
control panel
cover.
3. Using a 5mm allen
wrench, loosen the
bleed screw 1/4 turn.
4. Once any air has
been relieved, tighten
the bleed screw se-
curely.
Solution 3 - Ensure the group heads are bled of any air.
The La Marzocco uses a hollow, water-filled group casting, sometimes referred to as a satu
-
rated group. This design allows the convection of heat through the group. During installation,
the air is bled from the system, to enable larger volumes of water in the group head, resulting in
more stable brewing temperatures.
4. Remove the three
screws that secure the
field to the flowmeter
body.
5. Remove the
flowmeter field.
6. Inspect the impel-
lor for smooth rotation
and scale build-up on
the magnets. Replace if
necessary.
7. Inpect the flow
-
meter jet for scale
build-up. Clean out the
jet if necessary.
8. Replace the o-ring.
9. Reinstall the flow
-
meter impellor.
10. Reposition the flow
-
meter field.
11. Resecure the three
screws.
12. Reconnect the terminal leads. Ensure the red wire is attached to the
“+” terminal and the white wire is attached to the “0“ terminal.
Reprogram the machine and check for proper operation.
