The overheating of the self priming pump motor is not entirely a quality issue. Let's take a look at the reasons that can cause the motor to overheat and how to solve it:
1. Incorrect selection of self suction pump, for example, in actual working conditions, the head of the self suction pump is only 10 meters, but the user chooses a self suction pump with a head of 20 meters or even 30 meters. After use, the motor becomes severely overheated, because the actual conveying head is too much lower than the head of the self suction pump, causing the pump outlet flow to be too large, resulting in an increase in motor current and causing the self suction pump motor to become overheated. In severe cases, the motor may also be burned out. Solution: Install a valve at the pump outlet and reduce the outlet valve to control the flow rate of the self suction pump in order to reduce the current. If the difference in head is too large, even reducing the valve cannot solve the problem. The only solution is to replace the low head self suction pump.
2. The specific gravity of the medium being transported is too high. Solution: Increasing the motor power can solve the problem of overheating in the self suction pump motor.
3. The on-site voltage is unstable or the cables used for the self priming pump motor do not meet the standards. Solution: Resolve voltage issues and replace standard cables.
4. The spring of the mechanical seal of the self priming pump is adjusted too tightly during installation and replacement. Solution: Readjust the spring compression amount.
5. The assembly quality of the self-priming pump is poor, and the balance between the self-priming pump motor and the pump shaft is not concentric enough. Solution: Check the assembly quality of the self suction pump and reassemble for calibration.