Installation - La Marzocco GS/3 Owner's Manual

Espresso Machine Installation, GS/3
1) Fill Water reservoir with potable
water. Remove the drain tray and slide
the water reservoir until the water
reservoir fill cover is accessible. Remove
the cover and fill water reservoir with
potable water. Replace the fill cover
and slide the water reservoir to the
operating position and replace the drain
tray. (See GS/3 Software and Installation
Guide for additional instructions).
order to connect the machine up to
the water mains proceed according to
the indications given in the Installation
Guide and in compliance with any local/
national safety standards of the location
in which the machine is being installed.
To guarantee a correct and safe
functioning of the machine and to
maintain an adequate performance
level and a high quality of the beverages
being brewed it is important that the
incoming water be of a hardness greater
than 9°f (90ppm, 5°d) and less than 15°f
(150ppm, 8.4°d), pH should be between
6.5 and 8.5 and the quantity of chlorides
be less than 50mg/l . Respecting these
values allows the machine to operate at
maximum efficiency. If these parameters
are not present, a specific filtration
device should be installed, while always
adhering to the local national standards
in place regarding potable water.
WARNING
THE COFFEE MACHINE MUST BE PLACED
IN A HORIZONTAL POSITION ON A COUNTER
HIGHER THAN 80 CM FROM THE GROUND
2) Connect Espresso Machine to Power
Supply.
In Connect the espresso machine to a
power supply that is rated in accordance
with the serial plate on the espresso
machine.
3) Filling the Boilers with Water.
Once the espresso machine has been
unpackaged, placed on a hard surface,
and with the water reservoir full, it will
be necessary to fill the boilers with water.
Complete the following steps to properly
fill the boiler tanks:
Steam Boiler: Turn the main switch to
position "1" or ON, the automatic steam
boiler level system will be switched on,
activating the auto-fill solenoid valve and
the water pump. This will fill the steam
boiler to a predetermined level and will
shut off when full.
NOTE: It may be necessary to re-fill the
water reservoir during this process.

4. Installation

Check to see if the "Water Tank Empty"
error message is present on the display
before continuing.
Coffee Boiler: The water flows inside the
coffee boiler directly when the water
pump is activated. When the GS/3 is
turned on the electronics will activate
the water pump to fill both boilers.
Since the inflow of water will compress
the air in the boiler it will be necessary
to remove or "bleed" the air from the
coffee boiler. All air must be removed in
order to completely "saturate" the coffee
boiler/group assembly. To remove the
air from the boiler ("bleed the groups")
remove the group cover from the top of
the group head. Then loosen the bleed
screw (see picture) to allow air to escape
until water flows from below the screw
head. It may be necessary to activate the
Figure 3 - "Bleed the Group"
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