What is the reason that shaft-less magnetic pumps experience frequent starts and stops?

　　Shaftless magnetic pump is composed of three parts: pump, magnetic actuator and electric motor. The key component of magnetic drive consists of external magnetic rotor, internal magnetic rotor and non-conductive isolation sleeve. When the motor drives the external magnetic rotor to rotate, the magnetic field can penetrate the air gap and non-magnetic material, and drive the internal magnetic rotor connected to the impeller to rotate in synchronization, so as to realize the contactless transmission of power, and turn the dynamic seal into static seal, and solve the problem of “running, risking, dripping and leaking” due to the closure of the pump shaft, the internal magnetic rotor and the isolation sleeve, thus eliminating the safety hidden danger of flammable, explosive and harmful medium leaking through the pump seal in the oil refining and chemical industry, Leakage” problem, eliminating the refining chemical industry, flammable, explosive, hazardous media through the pump seal leakage of security risks.

　　Some users use non-shaft seal magnetic pump will encounter frequent start and stop this situation, what causes the magnetic pump to start and stop frequently:

　　1. Due to the conveying distance, the height of the higher pressure required, the pressure set on the pressure controller can not reach the use of pressure caused by the requirements, you can first open the controller cover and then a flat screwdriver to the middle of the adjusting knob clockwise upward to get a higher disconnect pressure can be solved.

　　2. Frequent start-up may also be due to the magnetic pump above the pressure tank inside the gas is no longer the reason, you can unscrew the pressure tank above the gas nut with a pump to add gas to the inside so that it can play a stabilized role of the gas tank, plus the location of the hole can be referred to the structure of the diagram. Need to pay attention to is not every device can be for the function of stabilizing the tank gas.

　　3. Due to the user's installation of import and export did not install check valves lead to stop the pump after the rapid return of water, the export pressure drop so lower than the preset pressure will start again. The solution to this frequent start is to install a check valve in the outlet to solve the problem.

　　4. Due to the sluice gate is not closed, or elsewhere there is water out of the outlet pressure drop will also automatically start, check the sluice gate closure status, to find where there is a leakage phenomenon is the solution to frequent start.

　　5. If the use of a period of time before the acid and alkali magnetic pump intact, suddenly appear frequent start-stop phenomenon, then there may be a bad automatic switch, you can replace an automatic switch to see if there is still the fault.