HD7870/80 /
HD7870/81
2-12
TECHNICAL INFORMATION
Volume adjustment
The PCB circuit board makes it possible to adjust the
volume output by means of pushing the one-cup and two-
cup user controls. How to adjust the volume output:
1. Make sure the boiler is fi lled properly, otherwise
perform fi ll procedure see DFU for instructions.
2. Switch appliance on and wait until the unit is ready to
brew.
3. Make sure a pod holder is placed, but without a Coffee
POD. (Only adjusting with plain water)
4. Place a cup on the drip tray cover and push the one-
cup button.
5. When the appliance has fi nished it is stabilized to
perform the volume adjustment.
6. Empty the cup, pod holder and push again for one cup
setting, measure the volume output with a graduated
beaker. In the table you can fi nd the requirements for
the minimum / maximum volume output cc/mL values
depending from the country version: (see Technical
specifi cations)
7. Unplug the appliance from the mains.
8. Press the 1- and 2 cup button simultaneously and plug
the mains on.
9. When above step succeeded the LED will turn on
continuously.
10. Depending if the volume has to de- or increase you
have to push the one- or two cup button. Every time
you push the 1- or 2 cup button the LED will turn
off for 0.5 second (feedback to user) and the pump
time will be shortened or lengthened for 0.5 seconds
depending which button was pushed.
Pushing 1 cup button
pump, time will be shorten
with 0.5 sec is approximately − 3.5 cc/mL (less coffee).
Pushing 2 cup button
pump, time will be lengthen
with 0.5 sec is approxi 3.5 cc/mL (more
coffee).
When the volume has to increase with 10 cc for
example, push the 2 cup button 3 times. The new value
will be stored when you switch the appliance off by
pushing the main switch (LED will turn off).
11. Turn appliance on again and brew one cup, measure the
volume. In case the volume is not within specifi cation
repeat steps 6 - 11.
Note:
Changing a newly installed PCBA (by default delivered with
General version settings) into a French or Spanish setting
requires a decrease of the pump time by 2,5 seconds
(or fi ve pushes of the 1-cup button).
