Working principle
The switch structure of float level controller is mainly designed and produced based on the principle of buoyancy and static magnetic field. The position of float ball with magnet (referred to as float ball) in the measured medium is affected by buoyancy. In the place of use, the change of the liquid level causes the change of the position of the magnetic float. Magnets and sensors (reed switches) in the float act to generate a switching signal to start or stop the pump. Similar to the float level meter principle, but the float level meter output is a continuous signal, while the float level controller output is a discrete switching signal.
Fault phenomenon
The float switch of pump No. 3 in sewage M pool cannot be started normally, and the float level controller does not operate when the liquid level reaches the specified water level.
Fault analysis
1. Check whether the wiring in the junction box is loose and whether the wiring screws are off
2. Check whether the junction box is flooded or damp
3. Check whether the wiring is correct and whether the cable is damaged
4, check the pool for debris or cable is not straightened out
5, check whether the surface of the float is attached to a lot of dirt
6. Check whether the float ball is sealed and there is no water in the float ball
7. Check whether there is abnormal sound in the float
Treatment method
1. Open the junction box and find that there is no moisture, water and other conditions inside, and observe that there is no screw loosening in the wiring.
2, check the wiring is correct, there is no foreign matter in the pool, the cable is not damaged, no knot
3. After the float was put forward, it was found that the float was broken and could not be repaired, so the maintenance measure was determined to replace the float level controller
4. Replace the float level controller
5, adjust the float to the appropriate position after normal operation
Thank you for reading, any questions are welcome to discuss with us.
