Judo SPEEDY-LongLife JSY-LF 1 1/2", Installation And Operating Instructions Manual

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14 JUDO SPEEDY-LongLife
Operation
5.3 Backwashing
The filter must be backwashed (= cleaned)
at the specified cycles in order to remove the
filtered dirt from the fine filter screen.
A complete backwashing process is carried
out by turning the handwheel through a full
turn. At the same time the handwheel en-
sures free discharge.
When the handwheel is rotated in any direc-
tion three suction pipes rotate around the
fine filter screen.
At the same time a patented ceramic flush-
ing valve on the underside of the filter opens
so that the backwashing water can flow out.
The treated water flows from the inside out-
wards through the screen into the suction
pipe, taking the adhering particles with it.
During this time treated water flows out.
The fine filter screen is cleaned. At the same
time the inside of the transparent filter cover
is cleaned together with the wiper lips of the
suction pipe.
Immediately continue turning the handwheel
until it audibly locks into place.
The ceramic flushing valve thus closes
again and the backwashing process is com-
pleted.
This backwashing process can be repeated
if necessary.
ATTENTION
(see chapter “Safety information and
dangers due to non-compliance”)
This backwashing process must be carried
out until the audible locking into place of the
handwheel.
If the locking process is discontinued before
the audible locking into place the ceramic
flushing valve is not fully closed. Water per-
manently escapes as a result. Apart from
high water consumption, this can also cause
water damage, especially if the backwash-
ing water is not discharged as described in
the chapter “Discharging the backwashing
water”.
5.3.1 Backwashing interval
The filter must be backwashed:
– Every two months at the latest.
– If the water pressure falls.
– If the filter is visibly dirty.
All filter sizes are backwashed with
treated water. The treated water
supply within the domestic installa-
tion is maintained throughout the
backwashing performance. During
the backwashing any wastewater
can't get into the pure water side.
The degree of pollution as well as
the cleaning off operation can be
watched from outside.
There is a display button on the cov-
er of the built-in rotary flange (JSY-
LF¾" – 1¼") or on the cover of the
filter bell (JSY-LF1½" – 2"). It can be
slid along the months scale. This en-
ables the backwashing interval to be
monitored.