Operation
4
Operation
4.1
Cleaning of the sieve insert
(backwashing)
A regular cleaning process is necessary to
remove the residues from the sieve fabric
of the device. This process is called
back-
washing
.
Suction pipes are provided for backwash-
ing, which rotate around the sieve fabric
of the fine filter. The backwashing valve
opens on the bottom side of the device.
By reversing the water flow from inside to
outside, deposits on the sieve fabric are
carried away and rinsed out with the back-
wash water. The suction pipes also clean
the inside of the transparent filter bowl with
wiper lips during their movement.
The degree of contamination and cleaning
process can be observed from the outside.
INFO_NO_HEADER
The device is backwashed with
filtered water. The filtered water
supply of the domestic installation
remains intact during the backwash-
ing process. No dirty water can reach
the pure water side during the back-
washing.
4.1.1 Backwashing interval
If cleaning is not performed soon enough,
the result may be damage to the sieve
insert. Large quantities of filtered particles
can deform the sieve fabric and in extreme
case lead to tearing of the sieve fabric.
In addition, larger deposit quantities can
impair the backwashing function mechani-
cally.
According to DIN EN 13443-1 backwashing
the device is required at the latest every six
months.
The manufacturer requires a backwash-
ing:
•
at least every 2 months
•
if the water pressure drops
•
if the filter is visibly dirty
Experience has shown that new installa-
tions in the early stages of installation lead
to increased dirt deposits. In this case, a
more frequent backwashing is necessary.
4.1.2 Backwashing
WARNING
Persons who, due to their phys-
ical, sensory or mental abilities
or their inexperience or lack of
knowledge, are unable to operate
the device safely may not operate
it without supervision or instruc-
tion from a responsible person.
Before carrying out a backwash,
ensure that the wastewater con-
nection is functional.
At the end of the backwashing
process, turn the handwheel until
it engages so that no more back-
wash water escapes. Otherwise,
water may constantly escape and
cause water damage.
1.
Turn handwheel counter-clockwise up to
stop.
Backwashing water escapes.
2.
Turn handwheel clockwise up to stop.
Ensure that no water escapes.
The backwashing process is completed
(see chapter 4.1).
4.2
Conversions, changes
WARNING
Unauthorised conversions and
changes are forbidden for safety
reasons. These can impair the
functioning of the device, leading
to leaks and, in the worse case
scenario, to bursting of the device.
1701803 • 2019/11
JUDO JPF-QC
11
