Grundfos MFV - 6 Maintenance; 7 Fault Finding; 8 Disposal

English (GB)
7
6. Maintenance
7. Fault finding
8. Disposal
This product or parts of it must be disposed of in an
environmentally sound way. Use appropriate waste collection
services. If this is not possible, contact the nearest Grundfos
company or service workshop.
Caution
The multi-function valve must not be dismantled. The
valve requires no maintenance and cannot be
repaired.
Fault Possible cause Possible remedy
Medium is flowing through the pressure
relief valve continuously.
Relief pressure set too low. Set the valve to a higher relief pressure.
Defective diaphragm. Replace the multi-function valve.
Dirt in the pressure relief valve. Rinse the pressure relief valve.
No medium is flowing through the pressure
relief valve.
Relief pressure set too high. Set the valve to a lower relief pressure.
The pressure loading valve does not
produce any counterpressure.
Defective diaphragm. Replace the multi-function valve.
Dirt in the pressure loading valve. Rinse the pressure loading valve.
Opening pressure set too low.
Set the pressure loading valve to a higher
opening pressure.
Subject to alterations.