Electrolux SM 554 Manuel de service Page 29

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Service
Manual
Edition
Type
12. Function Sequences
12
17 9108
Page
Wash speed
Relay K2 connects the wash speed windings on the wash motor. The
following conditions must be met for relay coil K2 (7) to be energised:
The door must be closed and the programmer knob must be in
position I (see ”Power supply and start” sequence)
Row M, stop (1) must not be programmed
The drum speed must be less than 550 rpm (120 litre) or 310rpm (220
litre). If it exceeds this, speed control B31 (2) breaks to avoid
damaging the motor.
The drain must be closed. (K31:51-52 (3) is closed when the drain is
closed). If the drain is open, the machine will run at distribution speed.
In this case, K31:51-52 (3) breaks, cutting out the wash windings on
motor M1.
If the above conditions are met, reverser motor M22 (8) starts. Reverser
contacts 1 (5) for normal action and 2 (6) for gentle action now open and
close according to a preset schedule (see diagram below). Switch S33
(4) on the front panel governs which of the two reverser contacts controls
relay K2.
14
b
b
b
a
b
a
b
Reverser diagram
1 Normal wash 12-3
2 Fine wash 3-12
4 Reversing
5 Reversing
1350
3 Distribution/
extraction
30 seconds
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