Operation
16
JUDO JPF-A
1701649 • 2019/04
CAUTION
Escaping water!
Before connecting to the power
supply system, make sure that the
waste water connection is func-
tional.
4.
Start the backwashing process manu-
ally: Press manual button: The back-
washing interval is reset.
After the backwashing process, the set-
ting of the new backwashing interval is
completed.
5.2.3 Start backwashing
Backwashing is triggered in the following
manner:
•
automatically, after the set backwashing
interval has elapsed.
•
automatically once the set differential
pressure is reached.
•
by pressing the
key (see chapter
5.2.5).
•
after short-circuiting the "external back-
wash start" contacts (only "floating" ver-
sion).
5.2.4 Backwashing via differential
pressure control (ATP version
only)
Mode of operation of the differential
pressure switch
The impurities filtered off on the filter fab-
ric cause an increased differential pressure
between the inlet and outlet of the unit with
an appropriate flow rate. The differential
pressure switch registers the differential
pressure applied to the filter. When the dif-
ferential pressure reaches the set value, the
backwashing process is triggered automati-
cally.
The differential pressure switch is flanged
directly to the device via the intermediate
flange.
Setting the differential pressure
The switching values of the differential
pressure switch are adjusted on the adjust-
ing screw. Set this using a screwdriver to a
value between 0.9 psi (6.2 kPa) and 9 psi
(62 kPa) according to the chart. The ex-
works setting is 2.9 psi (recommended set-
ting value 2.9 to 5.8 psi). The differential
pressure at the filter depends on the water
flow rate and the degree of contamination.
If the value is set too high, too much dirt
can accumulate at low flow rates. With
higher water withdrawal, the differential
pressure can then become so high for a
short time that damage can occur to the
sieve.
If the value is set too low, backwashing
is unnecessarily frequent, which leads to
increased wear and backwashing water
consumption.
Summary of Contents for PROFIMAT JPF-A 1 1/2"
Page 28: ...Technical data 28 JUDO JPF A 1701649 2019 04 9 4 Circuit diagram for device control...
Page 30: ...Technical data 30 JUDO JPF A 1701649 2019 04 9 5 Spare parts JPF A 1...
Page 33: ...Technical data 1701649 2019 04 JUDO JPF A 33 JPF A 1 2...
Page 36: ...Technical data 36 JUDO JPF A 1701649 2019 04 JPF A 2 4...
