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ENGLISH
5.1 Adjustment of the boiler water level probe
The level probe is normally placed in a standard position for all models of the NEW 105 series.
However, if the client so desires, it is possible to increase or decrease the amount of water in
the boiler by adjusting the level probe as shown in the figure.
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5.2 Adjustment of pump serving pressure
In models of the NEW 105 series, the pump is located inside the coffee machine.
/PUF
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Calibration of the pump operating pressure is set by LA SAN MARCO SPA at 9 bar. If you want to change this
value, proceed as follows:
1) The standard location for the pump is the right side of the machine (looking at it from the work zone). To
access it, the right side must be removed (figure 11).
2) Press the coffee serving button in the models NEW 105 S or the continuous serving button in the models
NEW 105 E to dispense water from a serving group.
3) On the lower graduated scale of the gauge, read the pump operating pressure.
4) Adjust the pressure using the adjustment screw of the internal pump (figure 11) of an external pump (fi-
gure 12). To increase the pressure, tighten the screw and read the corresponding value on the lower scale
of the gauge. To decrease the pressure, loosen the adjustment screw.
Figure 11
Figure 12
5) Once the desired pressure has been set, stop serving water and close the side of the machine.
/PUF
The suggested calibration of the pump to obtain proper serving is 9 bar.
5.3 Calibration of steam pressure in boiler
The steam pressure in the boiler is shown on the upper graduated scale of the pressure gauge
B
(figure 13).
After having calibrated the pressure switch, the pressure rises to the calibrated value. The steam pressure
on these models is changed by turning the adjusting screw
D
of the pressure switch (figure 14) located
inside the left side of the machine (viewed from the working area). To increase pressure, turn the adjust-
ing screw counterclockwise. To decrease pressure, turn the screw clockwise. Read the set pressure on
the upper scale of the pressure gauge, and if necessary repeat the operation.
Figure 13
Figure 14
D
