Judo JRSF Series, Installation And Operating Instructions Manual, Page: 43 / 55

Installation and operating instructions: JUDO JRSF automatic backwashing protection filter JRSF-ATP DN 125 - 200 (time and differential pressure controlled)
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6.3 Faults
Fault Cause Remedy
Severe clogging of the
permanent filter inserts Short-term heavy
contamination in raw water If necessary, perform multiple manual
backwashes, check the setting of the
differential pressure gauge
No sufficient backwashing
outcome Insufficient flow pressure or
open outlet Ensure min. required flow pressure
(E.g. throttle filter outlet)
Shut-off valve does not
open or does not fully
open Foreign body in the shut-off
valve Remove and clean the shut-off valve
Operating pressure too high Check and regulate the operating pressure
Drive design not suitable for
the operating conditions
Use drive that is designed for the operating
conditions
Internal diameter of the pipe
too small for nominal diameter
of the shut-off valve Fit shut-off valve with suitable nominal
diameter
Solenoid valve defective Check solenoid valve, replace if necessary
Lack of control medium Check control medium and connect
Control medium incorrectly
connected Check connections, correct as necessary
Control pressure too low Observe Chap. 3.5
Shut-off valve does not
close or does not close
fully Operating pressure too high Check and regulate the operating pressure
Drive design not suitable for
the operating conditions Use drive that is designed for the operating
conditions
Foreign body in the shut-off
valve
Remove and clean the shut-off valve
Solenoid valve defective Check solenoid valve, replace if necessary
Butterfly valve body - pipe
connection not tight Incorrect installation Check the butterfly valve body installation in
the pipe
Flanged fitting loose Tighten up flange bolts
Butterfly valve body leaky Incorrect installation Check the butterfly valve body installation in
the pipe
Butterfly valve body defective Check butterfly valve body for damage, if
necessary replace shut-off valve
Connection between valve
body and pipe leaks Incorrect installation Check installation
Connection loose Make connection correctly
Sealant defective Replace sealant
Tab. 11: Mechanical, hydraulic, pneumatic faults