Installation and operating instructions: JUDO JRSF automatic backwashing protection filter JRSF-ATP DN 125 - 200 (time and differential pressure controlled)
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JUDO Wasseraufbereitung GmbH
© JUDO Wasseraufbereitung GmbH
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D-71351 Winnenden
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Revision level: 24.05.2017
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3.5.3
Solenoid valve
Fig. 6: Solenoid valve
The direct-acting solenoid valve is pre-assembled in the factory and is used as a pilot valve for the
pneumatic drive of the shut-off valve. Output A is discharged in the volts-free state. As soon as the linear
drive has reached its limit position for backwashing of the respective filter chamber, the solenoid valve opens
for the time programmed under the “Backwashing time” parameter. The JUDO JRSF automatic backwashing
protection filter can be manually drained via the hand lever, which after pressing can be locked by turning in
the clockwise direction.
See Chapter 6.1.3 for setting of the closing speed of the shut-off valve via the exhaust
throttle!
3.5.4
Pneumatic drive
Fig. 7: Pneumatic drive
The single-acting pneumatic drive and the shut-off valve are pre-assembled in the factory. During
backwashing, the pneumatic drive is actuated by the solenoid valve via control medium, the shut-off valve
opens and backwashing water arising is discharged into the drain. Bleeding of the pneumatic drive by the
solenoid valve causes closing of the shut-off valve by spring force.
Setting of the stroke limiter, see Chapter 6.1.2!
Connection assignments:
Method of
operation:
1 Control medium (P)
2 Hand lever
3
Pneumatic drive (A)
4 Exhaust throttle (5 mm hexagon socket
screw) (R)
1 Position indicator
2 Stroke limiter
3 Counter nut
4 Silencer
5 Control medium
(from solenoid valve
connection A)
4
5
1
2
3
4
1
3
2
3
2
