Electrolux SM 554 Manual de servicio descargar pdf (Pagina 39)

Service

Manual

Edition

Type

12. Function Sequences

17 9108

Page

Out-of-balance

This acts as a safeguard against excessive stress during the extraction. If

the wash is unevenly distributed in the drum, the extraction stops, the wash

is redistributed and the extraction starts again. This takes place

automatically as follows:

• Out-of-balance switch S9 (3) trips.

Immediately afterwards:

• Relay coil K53 (10) is energised and locks since K53:33-34 (4) and

K53:43-44 (6) closes.

• K53:81-82 (28) cuts power to spin contacts K9 and K10, and the

machine stops the extraction.

• K53:71-72 (16) cuts power to relay coil K3 (17) (distribution speed).

• K53:51-52 (18) cuts power to relay coil K31 (21). This closes K31:71-72

(24), energising drain valve Y1 (25) and closing the drain.

• K53:13-14 (7) closes, energising valve Y14 (9) and letting cold water into

the drum.

If the drum speed falls below about 310 rpm (220 litre models) or 550 rpm

(120 litre models):

• Speed control B31 (11) switches to position 1-2. Since K31:51-52 (12)

is closed, this energises relay K2, and the machine starts to run at wash

speed.

Once the water reaches the high level:

• Level control B1 (5) switches to position 31-33, cutting the power to relay

coil K53 (10). K53 unlocks. Valve Y14 (9) closes.

• K53:51-52 (18) closes, relay coil K31 (21) is energised when reverser

contact 3b closes (see ”Distribution speed”). Drain valve Y1 (25) is de-

energised (K31:71-72 (24) breaks) and the drain opens.

• K31:51-52 (12) cuts the power to relay K2, K31:43-44 (13) closes,

energising relay coil K3 (17). The machine switches from wash speed to

distribution speed.

• After about 30 seconds, time relay K63 contact 12-13 (30) closes. If the

water level now falls below level control B1 (29)

minimum safety level (extraction), this energises extraction relay K9 and

the extract starts again. At the same time, K9:11-12 (15) cuts the power

to relay coil K3 (17).

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Electrolux SM 554 Manual de servicio Pagina 39