Technical Information
30
CVA 610/CVA 615 Coffee Systems
4.16 Flow Meter
All water taken from the water tank flows through the flow meter. The flow meter
sends signals to the electronic proportional to the quantity of water passing through
it.
The electronic then establishes the quantity of water that has flowed and stores the
figure. Approx. 300 pulses from the flow meter indicate a flow of 3 ounces of water.
The electronic controls the required water quantity for beverage preparation and
ensures that it remains constant. The service mode can be used to check the proper
operation of the flow meter. See Section 6.2 for further information.
4.17 Heater Data
Coffee, Hot-Water Heaters
(1R1, 1R2)
Steam Heater (2R1)
Voltage Power Rating Voltage Power Rating
CVA 610
220 (240) V 437W, 1090W 220 (240) V 1100W
CVA 615
120V 275W, 1090W 120V 1100W
Table 4-1: Heater Data
4.18 Heaters
The coffee/hot-water heater assembly consists of a large heater element (Figure 4-
19, Item 1) and a smaller heater element (Figure 4-19, Item 7). The steam heater
has only one heater element (see Figure 4-20, Item 3).
Each heater uses a positive thermal coefficient (PTC) temperature sensor (Figure 4-
19, Item 5) to provide signals to the electronic to monitor the temperature and control
the cycling (switching) of the heater element(s).
Additionally, each heater assembly is equipped with a thermostat (Figure 4-19, Item
3) connected electrically in series with the element. If the temperature becomes too
high, the thermostat will interrupt power to the heater element.
The heating circuit also contains a temperature-activated safety fuse (Figure 4-19,
Items 4 and 6). If the temperature exceeds a specific threshold due to an operating
fault, the fuse will blow and interrupt power to the element(s).
If this fuse blows, the cause must
be located and resolved before replacing the fuse.
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