espresso coffee machines
LSI 022 - Rev. 00 - Ed. 12/2015
18
5.5 OPERATING TEMPERATURE ADJUSTMENT FOR ELECTRIC HEATING SYSTEM
The electric heating system of the machine is already set by the manufacturer to work at a temperature of 120 °C in the
boiler, corresponding to 1 bar boiler pressure. This pressure can be viewed on the pressure gauge (12) on the appliance.
In order to increase or decrease the boiler pressure, it is necessary to operate on the electric pressure switch (Fig. 9) inside
the appliance (on the right side) in the following way:
THREE-PHASE PRESSURE SWITCH:
• Turn the adjustment screw anti-clockwise to increase boiler
pressure.
• Turn the adjustment screw clockwise to decrease it.
SINGLE-PHASE PRESSURE SWITCH:
• Turn the adjustment screw clockwise to increase boiler
pressure.
• Turn the adjustment screw anti-clockwise to decrease it.
Boiler pressure (at operating temperature) is normally modified exclusively in order to adapt the machine temperature to
the particular type of coffee blend so as to obtain the best result in the cup.
Take note!
Cut off power while operating on the pressure switch.
Danger!
Fig. 9
ADJUSTMENT SCREW
PRESSURE SWITCH
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