Active Preinfusion Pra - ECM Manufacture MECHANIKA MAX Bedienungsanleitung

1. Turn on your machine so that the PID can be seen.
2. Press ▼ and ▲ simultaneously, "t1" will appear on the display.
3. Press ▼ until "PrP" appears on the display and confirm the selection
with ▲.
4. Set the desired passive preinfusion time. This can be 0-9 seconds.
The selection will be confirmed after 3 seconds.
5. When the brew lever is engaged, a countdown will be displayed
during passive preinfusion. When it has elapsed, the pump will start.

8.2.2. Active preinfusion PrA

We recommend using active preinfusion when operating with a water tank. At the beginning of the coffee
extraction, the pump will build up pressure for a predefined or adjusted time (PrA). However, before the
pump pressure reaches 9 bar, the pump interrupts the activity for another predefined or adjusted time (PrP)
and gives the water the opportunity to completely infuse the ground coffee and then continue the extraction
at 9 bar.
An example: PrA = 4 seconds, PrP = 6 seconds.
The brewing process will start with 4 seconds of pump activity. For the following 6 seconds, the solenoid
valve is kept open, however the pump activity is interrupted. After the 6 seconds, the pump activity is
resumed and the extraction continues at 9 bar.
To set up the active preinfusion please proceed as follows:
1. Turn on your machine so that the PID can be seen. The passive
preinfusion must be activated.
2. Press ▼ and ▲ simultaneously until "t1" appears on the display.
Translation of the original German user manual
ENGLISH
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