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Technical Information
4.2.7
Flow Meter B3/4, Water Intake Quantity
A Flow Meter B3/4 integrated in the Water Inlet Mixer monitors the water intake
quantity. The water flow is measured in the hard water area.
A permanent magnet located in the Flow Meter axle activates an external reed
switch each time the axle rotates. The pulses supplied by the reed switch are
registered by the electronic unit and compared with a target value stored in memory
for the particular program or program step in operation. For each liter of water,
approx. 200 pulses should be registered. When the target value (maximum number
of pulses) is reached, the water intake step is stopped. If the target value has not
been reached after 4 min, the program is interrupted and the Drain Pump operates.
Then, depending on the model, the Inlet/Drain LED flashes or fault code F13 is
displayed, see Fault code F13, 6.8.14.
Note
For precise details regarding permissible minimum flow pressure, see
the appropriate operating/installation instructions.
4.2.8
Sensor Softener
If there is a break in data transfer between the Sensor Softener and the electronic
module, the control activates an emergency program. The basis for calculating the
period between individual reactivation cycles is then the most recently registered
water hardness Figure saved before the break in communications. At every new
program start, the electronic module attempts to re-establish contact with the Sensor
Softener. If this is successful, measured values from the Sensor Softener will then be
used again.
To ensure that possible measurement faults at the Sensor Softener do not have
severe consequences, the electronic control includes a further safety feature. A table
relating water hardness to maximum water quantities is stored in memory. If the
maximum water quantity for the hardness level in question is taken in without
reactivation having taken place, a reactivation cycle is started automatically.
If a sensor softener fault is registered, the fault code F87 is displayed and saved in
the fault memory, see Fault code F87, 6.8.15.
G1000 / G2000 Dishwashers
38
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