Electrolux COMPACT MIDI + EDW 500, Service Manual

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Spares Operation - R.Kurzke 02/05 599 521 951 EN
9. Washing
Once the fill phase has been completed, the cycle proceeds to the washing phase. The washing phase is
carried out using cold or heated water, and the status of the pressure switch is monitored constantly to
ensure that the hydraulic system functions correctly. Water replenishment cycles may be performed if
necessary.
If the pressure switch returns to EMPTY during the washing phase, the fill solenoid is energized for a
maximum time equivalent to T.S. x 3 (maximum allowable total fill time).
If this time is exceeded, the washing cycle is completed, but no further supplementary fills are
performed. In this situation, alarm condition [F 0] is stored in memory. This alarm code is not displayed to
the user, but can be accessed by the Service Engineer using a specific procedure.
Washing system
The appliance features the classic washing system in which the mechanical washing action is obtained
by the rotation of the washing pump which, by ducting water into the hydraulic circuit, actions the two
spray arms simultaneously.
The washing pump is actioned by an asynchronous motor with a start-up capacitor (2,5µF).
The washing pump rotates in a counter-clockwise direction (seen from the impeller side).
Heating
The heating element is enclosed in a protective tube, and is used to heat the washing water (but does not
switch on during the drying phase). The heating element is fitted to the outlet of the washing pump and
connected to the duct which feeds the upper spray arm.
The heating element is powered by electronic control and by the level pressure switch, which must be
set to “FULL” (contact closed on 1-3).
The temperature of the water is controlled by the main circuit board via an NTC sensor.