4.16Water Pump

CVA615 Coffee System

Technical Information

4.16Water Pump

The pump is self-priming and can develop a pressure of up to approx. 16 bar. For espresso preparation a pressure of approx. 8 bar is required so that the water can be forced through the compressed ground coffee. A further increase in pressure does not improve beverage quality.

The pump is fitted with a safety valve which opens at 16 bar system pressure. If pressure is too high, water is passed from the safety valve via a hose

The pump is connected in series with a temperature limiter. The temperature limiter interrupts the power to the pump should a high temperature develop.

4.17Flow Meter

All water taken from the water container flows through the flow meter. The flow meter passes signals to the electronic unit proportional to the quantity of water passing through it.

The electronic unit 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 unit 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 – Service Mode for further information.

4.18Heaters

Coffee / Hot Water Heater 1R1 & 1R2

Voltage 120V

Power rating 275W and 1090W

Steam Heater 2R1

Voltage 120V

Power rating 1100W

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Miele CVA615 manual 4.16Water Pump, 4.17Flow Meter, 4.18Heaters, Coffee / Hot Water Heater 1R1 & 1R2, Steam Heater 2R1