La San Marco 100 DTC E/S, Use And Maintenance

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5.4 Adjustment of temperature of dispenser groups: (models 100)
In models 100 (except for models 100 DTC) the temperature can be adjusted for the serving of espresso
coffee without changing the internal pressure of the boiler. At the head of the serving group, there is a valve
(flow variator) that controls the flow of hot water coming from the exchangers. This valve is accessible from
the upper tub, by removing the plastic cup support grille (figure 15). Four numbered notches are imprinted
on the upper tub (
2 , 3 , 4 , 5 ) for each serving group (figure 16). The valve is normally set to number 3 (this is
the default setting provided by LA SAN MARCO SPA). If you want to change the serving temperature, you
will need to use the valve (flow variator) of the group. To increase the temperature, turn the valve towards the
higher numbers. Contrarily, to decrease, turn the knob towards lower numbers.
5.5 Additional notes for models 100 DTC (Dual Temperature Control)
The cooling system of the models 100 DTC has the purpose of ensuring thermal stability of the water used for
serving espresso coffee. This system uses a special serving group in which the cold water from the mains pas-
ses through a small tube located in a compensation chamber. The hot water from the heat exchanger of the boi-
ler passes through the serving group and comes into contact with the cooling tube. As a result it loses heat.
5.6 Adjustment of temperature of hot water (100 E)
Models100 E with 2/3/4 groups include a mixer that makes it possible to adjust the temperature of the hot
water for the preparation of infusions. The mixer can be calibrated by turning the adjustment screw, which is
accessed from the upper tub (figure 17). The mixer undergoes standard calibration by LA SAN MARCO SPA.
If you want to adjust the temperature of the hot water drawn, turn the screw clockwise. On the contrary, to
decrease the water temperature turn the screw counter-clockwise.
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