304
Pump pressure adjustment valve
The machine is delivered with the valve set at 10 Bar. The end user can adjust
the valve (s) to increase or decrease the pressure.
1. Release the filter holder from the group.
2. Remove the filter from the filter-holder.
3. Insert the blind filter in the filter-holder.
4. Attach the filter holder to the coffee brew group.
5. Start the coffee brew group delivery to obtain the maximum pressure in the
circuit, shown on the the gauge.
6. Remove the cap to have access to the adjustment screw (s).
7. Act on the valve adjustment screw, turning it clockwise to increase the
pressure and anticlockwise to decrease the pressure in the circuit.
8. Stop the delivery.
9. Start the delivery of the group and check the pressure adjustment shown on
the gauge.
10. Repeat the above operations until the required adjustment is achieved.
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Valve adjustment screw
It is advised to adjust the pressure within a maximum of 12 and a minimum of 9
Bar.
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