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| [* black] Disconnect the spade connectors from the digital switch near the steam valve knob. | |
| - | [* icon_note] When you open the steam valve knob (to steam your milk), a cam attached to its shaft presses the digital switch, closing the circuit. This either starts the pump, gives power to the heater, or both, to produce steam (we don't have a circuit schematic). |
| + | [* icon_note] When you open the steam valve knob (to steam your milk), a [link|http://en.wikipedia.org/wiki/Cam|cam] attached to its shaft presses the digital switch, closing the circuit. This either starts the pump, gives power to the heater, or both, to produce steam (we don't have a circuit schematic). |