For Parallel Operation Only; Operation; Setting The Backwash Interval; Manual Backwashing - BWT Infinity A 3/4" Instructions De Montage

10.3

For parallel operation only

When 2, 3 or a maximum of 4 filters are operated
in parallel, they must be electrically interlocked to
prevent simultaneous backwashing.
Insert an interlocking cable into the output of any
one filter, representing filter 1, and run the cable to
the input of filter 2. Insert the next interlocking cable
into the output of filter 2, and run it to the input of
filter 3. The output of the last filter is returned to
the input of filter 1.
The required backwash interval must be set at the
filter to be backwashed first (master) (see above).
The second filter (slave) must be set as follows:
Key
Press Set for 5 seconds
Display dots flash; device is in programming
mode
Press Set
Wait 10 seconds, dots stop flashing.
The pressure appears in the display (0.0 P, when
no water is used).
A third filter must be set to SL 2 and a fourth to SL 3.
Disconnect and reconnect all filters to the mains.
The filters will be backwashed in sequence: Master,
SL 1, SL 2 and SL 3.
The time until the next backwashing and the pres-
sure difference appear alternately in the master filter
display. The pressure difference is only displayed
for large volumes of water.
Only the pressure difference appears in the slave
filter display.
The filters are ready for use.
11

Operation

We recommend programming the filter so that the
device is backwashed at least once a month to
prevent foreign particles from adhering to the filter
element (more frequently for higher levels of soiling;
factory setting every 7 days).
11.1

Setting the backwash interval

Should the local water quality (degree of contami-
nation) change, the backwashing interval must be
corrected; see commissioning.
11.2

Manual backwashing

Unplugging and plugging in the device can back-
wash it at any time.

Display

SL 0
11.3 Display
The time until the next backwashing and the pres-
sure difference appear alternately in the display.
SL 1
The pressure difference is only displayed for large
volumes of water.
11.4

Cleaning

Clean plastic parts with a soft, damp cloth only;
do not use solvents, detergents, or acidic cleaning
agents.
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