19
Markus
INSTALLATION
Water connection
Pressure and temperature
Starting the machine
Relationship between boiler pressure and temperature
Standard pressure and temperature
0.7
110
115
120
125
0.8
0.9
1
1.1
1.2
o
C
BAR
Fig. 01
Connecting the machine to the domestic water supply must be performed by a qualified person.
Purge at least 20 liters of water from the domestic water supply before connecting the machine to it to flush out
any debris that may be in the plumbing system that would otherwise accumulate inside the boilers.
The domestic plumbing system should be fitted with a brass 3/8” NPT male pipe fitting and an in-line
shut-off valve. Connect the 180cm water inlet hose included with the machine to the domestic water
supply and tighten the line fittings with a wrench to 15 ft. lbs. / 20N-m.
Only use safe drinking water with a hardness rating between 5ºfH and 8ºfH (French hardness
degrees) or 20 to 32 ppm (parts per million as calcium). If the hardness value is below this limit,
corrosion of hydraulic components is likely. If the value is higher, lime-scaling inside the boiler will
occur. In both cases, the proper function of the machine and quality and taste of the coffee will be
negatively affected.
If necessary, connect the machine to a water softener to reduce water hardness using the flexible 55cm
hose included in the accessory box.
Connect one end of the corrugated drain tube to the drain cup in the machine, connect the other
end to the plumbing drainage system in the installation area.
Boiler pressure is directly controlled by water temperature (fig. 01).
This machine is fitted with a pressure gauge that displays the boiler pressure, if the machine is
equipped with a digital display it will also indicate water temperature.
Important:
Only use the hoses supplied with the machine. Never reuse damaged hoses.
Ensure that the drainage tube is not twisted and that it is below the level of the drain cup.
Open the machine’s water supply valve.
Turn on the main power switch.
Press a drink button at the control panel on each
group, wait until water comes out continuously from
each of them. This ensures that the heat exchangers
in the machine are being correctly filled.
Open the steam lever to release the air trapped in
the boiler.
The red lamp indicates that the boiler is heating. The
lamp switches off automatically when the machine
reaches operating temperature.
The machine is now ready to use.
