CMA Technical Manual - Love Coffee Machines
CMA Technical Manual - Love Coffee Machines
CMA Technical Manual - Love Coffee Machines
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16 - English<br />
R<br />
espresso coffee machine - instructions for technician<br />
5.4 CTS SYSTEM (thermosiphon system)<br />
In this system, the delivery group (1) is heated by a thermosiphon circuit (2) connected to the heat exchanger (3). The same water is used<br />
for coffee delivery, thus ensuring the same temperature for all coffee servings.<br />
• activation of the solenoid valve and of the pump allow cold water to enter the exchanger (3) through the injector (4).<br />
• from the exchanger (3) the boiler water is carried to the group (4) for delivery;<br />
• the pump allows the increase of the pressure of the water flow up to 8-9 bar for delivery.<br />
The injector (4) and the flow reducer (5) are important components for<br />
the operation of the delivery group.<br />
To increase the coffee extraction temperature, remove the flow reducer<br />
(5) or replace it with one of a greater diameter. To decrease the temperature,<br />
replace it with one of a smaller diameter.<br />
If necessary, the exchangers can be replaced by removing the flange and<br />
disconnecting the relative pipes of the hydraulic circuit. These operations<br />
should be carried out after the machine has been switched down and has<br />
cooled off. Always replace the seals.<br />
5.5 BOOSTED SYSTEM<br />
Heating of the delivery group is provided by direct contact with the boiler.<br />
Water used for delivery of coffee is taken from an exchanger which is<br />
immersed in the water of the boiler and attached to the.<br />
• the activation of the solenoid valve and of the pump allow cold<br />
water to enter the exchanger (1).<br />
• From the exchanger (1) the boiler water is carried to the group<br />
duct (2) for delivery.<br />
• the pump allows the increase of the pressure of the water flow up<br />
to 8-9 bar.<br />
The exchanger can be replaced without having to remove the flange.<br />
Loosen the screws, and detach the flange that holds the exchanger.<br />
Perform these operations when the machine is off and is cool. Always<br />
replace the seals.<br />
3<br />
Water inlet<br />
delivery<br />
coffee<br />
1<br />
inlet<br />
water<br />
5<br />
4<br />
2<br />
at rest<br />
<strong>Coffee</strong> delivery<br />
1<br />
3<br />
in delivery<br />
3<br />
2