Miele cva 610, Technical Information

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Technical Information
32
CVA610 Coffee System
4.14
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 to the fitting plate and from there to the housing
under the percolator unit. The water is then passed through the
door rear panel to the drip tray.
The pump is connected in series with a temperature limiter. The
temperature limiter switches off the pump if a high temperature is
developed.
Figure 4-19: Water Pump