Judo JPM, Инструкция по установке и эксплуатации, Страница: 14 / 28

14 JUDO PROMI
Operation
5.4 Backwashing
Physical impurities retained and trapped on
the filter sieve are removed by backwashing.
During the backwashing, there is no inter-
ruption to the water supply, nor any interrup-
tion to the filtration. The backwash waste
water is diverted to the rinsing valve having
no contact with the filtered water supply.
Backwashing is performed based on a
patented point-rotation system.
A backwash is activated by turning the
hand-wheel (2) counter-clockwise, this auto-
matically opens the rinsing valve, continue
to rotate the hand-wheel counter-clockwise
until a stop position is reached. During this
rotation you will notice that the suction
control arms rotate around the filter sieve, in
an upward direction following a spiral path,
which will clean the entire filter area until the
stop is reached. Once the stop position is
reached the filter sieve has been cleaned
once, but the backwash cycle is not
completed. The backwash is complete by
then turning the hand-wheel in a clockwise
direction. During this rotation you will notice
(that the suction control arms rotate around
the filter sieve, in a downward direction
following the same spiral path, which will
clean the entire filter area for a second time
until the stop position is reached. Turning
the hand-wheel in a clockwise position until
the stop position is reached is essential in
completing a backwash, as it closes the
rinsing valve simultaneously.
Therefore:
Step 1 - turn hand-wheel (2) counter clock-
wise, until stop point to open rinsing valve.
Step 2 - turn hand-wheel (2) clockwise until
stop point to close rinsing valve.
During a backwash, the suction control arms
create a reverse flow action at each nozzle
piece, resulting in a vacuum effect, which
removes all trapped physical impurities
using the inlet water pressure; ejecting them
all to drain via the rinsing valve.
Each nozzle piece is equipped with wiper
blades, during the upward and downward
backwash rotations, these wiper blades
clean the sight glass simultaneously.
Backwash intervals are subject to the water
quality conditions and the amount of phys-
ical impurities. A Backwash should be
performed as often as required. Loss of
water pressure is noticed if a backwash is
not performed regularly or as often as
required.
The hand-wheel (2) cover houses a memory
control (JPM ¾“-1¼“) which issues an
acoustic beep at two months intervals, as a
reminder that a backwash is required.
Pressing the reset button (9) on the top of
the hand-wheel for a minimum of 3 seconds,
deactivates the acoustic beep and resets
the two months interval reminder.
5.4.1 Backwashing interval
The filter must be backwashed; as often as
required
– Every two months at the latest.
– If there is a loss of pressure.
– If the backwash protective filter is visibly
dirty.
ATTENTION
(see chapter “Safety information and
dangers due to non-compliance”)
Unauthorized persons must not operate the
filter! Persons who operate the filter must
observe the operating instructions. Failure
to observe these instructions can result in
damage to property and personal injuries.
The smaller the mesh size of the sieve the
more frequently backwashing has to be
performed!
The contamination degree as well
as the cleaning operation can be
externally observed.