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7 Mini VII Water Flow Diagram
The information below is provided strictly as a reference for Mini VII owners who are
curious about the function of their Mini VII Dual Boiler design.
8 Adjustments and Maintenance
8.1 Group Pressure Adjustment
Conventional espresso guidelines call for group pressure in the range of 8.25-9.5 Bars.
This is normally set to 9.0 bar prior to shipment. Should you wish to try a lower pressure
or, if adjustments are required at some future time, use the procedure documented
below.
1) Pull out the drip tray and set it aside
2) Remove the two screws holding the chrome front splash panel in place. (The
panel that the pressure gauge protrudes through.)
3) With the panel removed you will see the adjustment nut shown in the photo
below.
4) Insert the portafilter with the rubber disk inserted or using a “blind basket”, the
same as you would do for backflushing.
5) Press the One Cup or Two Cup Button.
6) Use either the correct metric box wrench or an adjustable wrench to adjust the
group pressure as noted on the group pressure gauge to your desired value.
Turn right to increase pressure, left to decrease pressure.
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