58300000111195_ARA_en_f.doc – 02.06.09
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4.11.2 Detection
springs
The drip tray features two tray contacts
(A)
. When the drip tray is
pushed all the way into the appliance, the detection springs
(B)
catch
against the tray contacts
from below
.
Therefore the following states can be measured
►
Drip tray is missing and
►
Drip tray full of water
The detection springs are attached to a drawer which is accessible
when the rear panel of the appliance is opened.
4.11.2.1 Function:
Drip tray is missing:
Detection springs
1
and
2
are not jumpered by
the tray contact
I
. The circuit is interrupted.
Drip tray inserted:
Detection springs
1
and
2
are jumpered by the
tray contact
I
. The circuit is closed.
Drip tray is full of water:
The tray contacts
I
and
II
are inserted into
the water. The electrical resistance between the tray contacts drops.
The circuit is closed via the detection springs
2
and
3
.
Drip tray is empty:
The tray contacts
I
and
II
are dry. The electrical
resistance between the tray contacts is infinite. The circuit between
the detection springs
2
and
3
is interrupted.