Electrolux W3105H, Service Manual

Page: 97 / 170

23
23
23. Programme unit
438 9149-81/06
04.03
Service
Manual
Imbalance detection
Imbalance can be split into three different types: extreme imbalance
measurement, mechanical imbalance interruption and super imbalance
measurement.
Extreme imbalance measurement
In a drain sequence, when the drum starts its acceleration from washing
rpm to extraction rpm, the extreme imbalance measurement starts when
90% of the distribution rpm has been achieved. After this, for the remainder
of the super imbalance measurement, the distribution time and throughout
any subsequent extraction time, the programme detects whether extreme
imbalance occurs or not.
In the event of extreme imbalance, which can occur if e.g. a spring strut is
damaged or if washing is being performed in sacks, the acceleration is
interrupted and it is necessary to wait for the drum to stop. If extreme
imbalance occurs during:
a. distribution or during super imbalance measurement, the drain
sequence starts again from the beginning. The number of attempted
restarts can be set in the system data, but is usually set to 5 attempts.
This value can also be altered via configuration 2.
b. extraction, the extraction is interrupted and the programme skips to the
next washing sequence after extraction.
Mechanical imbalance interruption (detection via mechanical
imbalance switch)
The same as extreme imbalance, except that if the imbalance switch is
activated during a part of the washing programme that is run at washing
rpm, the drum stops for a few seconds and then automatically starts up
again.