Water Pump; Flow Meter; Heaters - Miele CVA615 Technical Information

Technical Information
4.16

Water 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.
4.17

Flow 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.
4.18

Heaters

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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CVA615 Coffee System