dosing pump trouble shooting
Problem | Possible Cause | Solution |
The pump is working properly but the dosage is interrupted | Blocked valve | Clean the valves or replace them if it is not possible to remove the build-ups |
Excessive suction height | Position the pump or tank so as to reduce the suction height | |
Excessive liquid viscosity | Reduce the suction height or use a pump with a bigger flow capacity | |
Insufficient flow capacity | Leakage from the valve | Check that the ring nuts are properly tightened |
Excessive liquid viscosity | Use a pump with a bigger flow capacity or reduce the suction height | |
Valve partially blocked | Clean the valves or replace them if it is not possible to remove the build-ups | |
Irregular pump flow capacity | Transparent PVC hose on delivery | Use an opaque PE pipe on delivery |
Broken diaphragm | Excessive back-pressure | Check the system pressure. Check whether the Injection valve is blocked. Check whether there are any blockages between the delivery valves and the Injection point. |
Operation without liquid | Check the presence of the foot filter (valve). | |
Membrane not secured correctly | If the membrane has been replaced, make sure that the same is correctly tightened. | |
The pump does not switch on | Insufficient power supply | Check whether the pump plate data corresponds to that of the electricity network. |