Adjustments; Adjustment Of Boiler Water Level Probe; Adjustment Of Pump Dispensing Pressure; Adjustment Of Steam Pressure In Boiler - La San Marco NEW 105 TOUCH Serie Bedienung Und Wartung

The main switch can be turned to two positions (1 and 2). Position 1 starts the electronic auto-
matic level function to fill the boiler and excludes the operation of the heating elements. Position
2 starts the heating elements to heat the water. Never start the coffee machine by turning the
main switch to position 2 (the electrical heating elements must always be submerged in water in
order to operate).

5. adjustments

Any adjustments to the coffee machine must be carried out by qualified technical staff authorised
by LA SAN MARCO SPA.
5.1 Adjustment of boiler water level probe
The level probe is normally placed in a standard position for all the models in the NeW 105
TOUCh series. however, if the customer so desires, the amount of water in the boiler can be
increased or decreased by adjusting the level probe as shown in the figure.
5.2 Adjustment of pump dispensing pressure
In the models in the NeW 105 TOUCh series, the pump is located inside the coffee machine.
Note:
An external pump can be installed on the coffee machine upon request.
The pump operating pressure is calibrated by LA SAN MARCO SPA at a value of 9 bar. Should you wish 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 continuous dispensing button to dispense water from one of the dispensing units.
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) or in the event of an ex-
ternal pump (figure 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
5) Once the desired pressure has been set, stop dispensing water and close the side of the machine.
Note:
The suggested calibration of the pump operating pressure to obtain proper dispensing is 9 bar.
5.3 Adjustment of steam pressure in boiler
The steam pressure in the boiler is shown on the upper scale of the pressure gauge B (figure 13). The lower
graduated scale indicates the operating pressure of the pump. To change the pressure of the liquid-saturated
steam mixture inside the boiler, you will need to vary the temperature as explained in the programming chapter.
Figure 12
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