La Marzocco GS/3 Owner's Manual page 14

7. IMPORTANT To improve the flavor
profile of the espresso, the temperature
of the water in the coffee boiler, and
therefore of the groups, may eventually
be raised or lowered via the digital display
(please consult Software Programming
Manual for detailed instructions).
N.B.
If the machine has not been used for
more than 8 hours or, in any case, after
long periods of being idle, in order to
use the machine to its full potential it
is necessary to perform some cleaning
cycles before brewing beverages as
follows:
• Groups: with the portafilters engaged
in the groups brew water through each
for at least two minutes
• Being careful to avoid burns, turn on
each steam wand for at least one minute.
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• Turn on the hot water valve for the
time necessary to allow 1 liter of water
to be brewed.
• If using machine with water reservoir,
change the water in the reservoir daily.
If the machine is not going to be used for
long periods of time, it is advisable to
follow these safety indications:
• Disconnect the machine from the water
mains or interrupt the water connection
via a mains tap.
• Disconnect the machine from the
electrical mains.
WARNING
IF THE ABOVE-MENTIONED INSTRUCTIONS
ARE NOT ADHERED TO THE MANUFACTURER
CANNOT BE HELD
RESPONSIBLE FOR DAMAGE
TO PERSONS OR THINGS.