User Manual

English
7
EN
5. Water mains connection
Water used in coffee machines must be potable and suitable for human consumption (see laws and
regulations in force).
Check that the water pH level is 6-8°F and complies with the laws in force and that the chloride value
is less than 100 mg/l.
If the values do not fall within the limits, an appropriate water treatment device must be inserted
(respecting the local laws and compatible with the machine).
If the machine uses water with a hardness exceeding 8°F (4.5 °D), a specic maintenance plan must
be implemented according to the hardness detected and machine usage.
Use only the supplied parts for the connection: water inlet and outlet tubes, clamp for the water outlet tube.
If other parts are installed, they must be new (not used) and they must be able to come in contact with
potable water suitable for human consumption, according to any national rules that may be applicable.
Place the machine on a at surface and stabilize it by adjusting and securing the feet.
Hook up the water connections respecting the hygiene, water safety, and antipollution laws in the
country of installation.
If the water pressure can rise above 6 bar / 0.6 MPa, install a pressure reducer set at 3 bar / 0.3 MPa.
Place the end of the water draining tube in a drain with a siphon for inspection and cleaning.
The curves of the draining tube must NOT bend.
6. Getting the machine ready for use
Once the hydraulic and electrical installations are over, proceed to get the machine ready for use.
Open the tap of the water mains and close the general protection switch.
Switch on the main switch I/O: the relative pilot light will go on.
The self-levelling device will start working in order to ll the boiler with water until the right level is
automatically reached. During the rst lling of the boiler, it’s recommended to open the steam tap
and close the tap at the end of this operation to let eventual air come out from the wand.
Once the water has been automatically pumped into the boiler, the boiler heating element will start heating it.
Dispense half a litre of water from each extraction group.
Wait until the machine has reached the exercise nominal temperature.
The machine is now ready for use.
If after turning on the machine, the display shows the written “OFF”, select and press the K3GR1
button to start on the machine.
7. Installation check-up
Once the installation is over, check if the machine is working properly.
Verify that there are no leaks from the connections or tubes.
Verify that boiler and operating pressure comply with the nominal values, between 1 and 2 bar.
Verify that the pressure gauge and the pump pressure are working properly.
Verify that the self-leveling device is working properly.
Verify that the expansion valve is working properly.