Electrolux EWM1000, Руководство по обслуживанию

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SOI/DT 2002-07 eb
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6.13 “FUCS” ( F ast U nbalance C ontrol S ystem)
The control procedure for unbalanced loads is performed dynamically, before each spin cycle, as follows:
•
An initial phase is performed in which the direction of rotation of the drum is alternated at 55 rpm.
•
The phase begins at a speed of 55 rpm; the speed can never fall below this value, otherwise the check
is repeated.
•
At intervals of 300 ms, the balance is calculated and compared with predetermined limits. If the value is
less than the lower limit, the speed of the drum is increased by 2 rpm; if the value is higher, the speed of
the drum is reduced by 2 rpm. The reduction in the speed of the drum distributes the washing correctly;
this procedure is repeated until the wash load is completely balanced.
•
Correct balancing of the wash load is achieved at a speed of 115 rpm, after which the spin cycle begins.
The Unbalancing Control function may take place in four phases; each phase is characterized by an
unbalancing threshold and a time-out (maximum time).
Phase
0:
Phase 0 has a predetermined unbalancing threshold; if correct balancing of the wash load is
achieved, the appliance performs a 470 rpm spin pulse, preceded by 5 seconds at 100 rpm and
followed by phase 1; otherwise, after a maximum of 60 seconds, the cycle passes directly to
phase 1.
Phase 1: The first phase has a different pre-set unbalancing threshold: if correct balancing is achieved, the
appliance performs the spin cycle, preceded by 5 seconds at 100 rpm. If not, after a maximum of
120 seconds, the cycle passes to phase 2.
Phase
2:
The pre-determined unbalancing threshold in the second phase is different: if correct balancing is
not achieved within 60 seconds, the function passes to phase 3.
Phase 3: The third phase has a pre-determined unbalancing threshold: if correct balancing is achieved
within 90 seconds, a spin pulse is performed, preceded by 5 seconds at 100 rpm and followed by
a repeat of phase 1; otherwise, after a maximum of 90 seconds, the cycle passes directly to
phase 1. If the load is highly unbalanced after the second attempt for phase 3, the spin cycle is
skipped; if balancing is not perfect, a reduced-speed spin is performed.
6.13.1 Examples of operation of the unbalancing control function
The examples shown below describe the operation of an appliance with a final spin speed of 1000 rpm.
Perfect balancing
ƒ Low speed
ƒ FUCS phase 0 + spin pulse
ƒ Low speed
ƒ FUCS phase 1
ƒ Normal spin