La Marzocco micra Serie Manuel page 12

8) Adjusting water pump pressure.
The water pump is factory set at 9 bar
pressure. If it becomes necessary to
change the pressure please use the
following procedure:
1. Remove the top tray and the lower tray.
2. Locate the water pump adjustment
screw.
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3. Adjust the water pump pressure to the
desired measurement.
4. Rotate clockwise to increase pressure
and counter-clockwise
pressure.
Figure 2 - Water Pump Pressure Adjustment
NOTE:
The water pump pressure should be
adjusted when the machine is operating
and coffee is present in the portafilter,
to reduce
however do not exceed 10 bars.
Adjustment
screw