Installation
12
JUDO JSY-LF-AT
1701429 • 2018/12
3.5
Commissioning
Prior to initial commissioning (or to com-
missioning after maintenance work) fill the
installed device with water and vent:
1.
Open the upstream shut-off valve to fill
the device with water. The device is now
under mains pressure.
2. Attention:
Immediately plug the power
supply unit in. This automatically carries
out backwashing and the trapped air can
escape. This prevents damage to the
installation due to pressure surges.
After backwashing, the device is vented
and ready for operation.
4
Operation
4.1
Warning lights
1
2
Fig. 3:
Warning lights
1
Operation (green warning light)
The device is now ready for oper-
ation.
2
Fault (red warning light)
A fault exists (see chapter 6).
4.2
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.
If the mains voltage fails during the back-
wash process, the backwash is completed
using the built-in batteries. Prior to every
backwashing a battery test is performed.
On a missing, empty or defective battery a
fault indication appears (see chapter 4.4).
A backwashing is no longer possible
4.2.1 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