Liquid pulsation damper
Troubleshooting
KNF Flodos BA_FPD_EN_04_069182
Translation of Original Operating and Installation Instructions
14
8. Troubleshooting
Flow rate, suction head or pressure head is too low
The pump does not achieve the performance stated in the technical data or on the data sheet.
Cause
Fault remedy
Components in the system
connected to the suction and
pressure sides, such as hoses,
valves or filters, are causing too
much resistance
Modify installation, check cross-sections of components
Hose connections are not leak-
tight
Secure transition joints between hose and hose connectors
with clamps or other clamping elements
Particles in the liquid pulsation
damper
Clean the liquid pulsation damper, install suction-side filter if
required
(see Chapter 7.2)
Viscosity of the transferred
medium is too high
Contact KNF
Incorrect interchange of outlet
and inlet line connections
Remove outlet and inlet lines and re-connect correctly
The liquid pulsation damper
parts are not resistant to the
medium to be transferred
Replace with a resistant variant
Separating diaphragm is worn
Replace separating diaphragm
(see Chapter 7.3)
Tab. 12
Fault cannot be rectified
If you are unable to identify any of the above causes, please send
the liquid pulsation damper to KNF customer services (see address
on last page).
Flush the liquid pulsation damper to clear it of any hazardous
1.
or aggressive fluids (
see Chapter 7.2.1).
Remove liquid pulsation damper.
2.
Clean the liquid pulsation damper (
see Chapter 7.2.2
).
3.
Send the liquid pulsation damper to KNF customer services
4.
along with the completed decontamination declaration (s
ee
Chapter 9
). Please indicate the medium that the pump is
used to transfer.
