Faults, causes and remedies
Cause | Remedy |
|---|---|
Fault: The pump is not priming. | |
Incorrect commissioning procedure. | |
The suction procedure can be from two seconds to five minutes. | |
Air intake into the suction line. | Examine the pipework for leaks. |
Suction filter clogged. | Clean the suction filter |
Integrated non-return valve in the suction port blocked (only LPC 50 and LPC 80). | Remove suction pipe and clean the non-return valve. |
Suction height is too high. | Max. suction height is 7.5 m. Examine the operating conditions. |
Fault: No or not sufficient flow rate | |
Suction filter clogged. | Clean the suction filter |
Direction of rotation incorrect (counter-clockwise rotating field). | Examine mains connection. Clockwise rotating field necessary. |
Gate valves are closed. | Open the gate valves in the suction pipe and discharge pipe. |
Wear and tear at the hydraulics. | Contact customer service. |
Fault: Motor protection switch tripped or the motor overheated. | |
Mains connection incorrect. | Examine the mains connection. Contact an electrician. |
Motor circuit breaker incorrectly set | Examine the setup. |
Phase failure. | Examine the mains connection. Contact an electrician. |
Wear and tear at the hydraulics. | Contact customer service. |