Reverse rotation due to pump failure

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Reverse rotation due to pump failure: First, let us introduce the reasons behind the reverse rotation of pumps. When several water pumps operate in parallel or a single pump is running, if the pump suddenly stops rotating and the check valve at the pump’s outlet is not secure, reverse rotation of the pump can easily occur. In such a situation, the pump must not be started, as this can easily cause damage to the shaft and the motor. Therefore, when this happens, it is necessary to immediately close the outlet valve of the pump and start the backup pump – this point must be kept in mind. What will be introduced below are the hazards caused by reversing the water pump. When a water pump operates in reverse, the pressure in its outlet manifold may drop sharply. Additionally, this can cause the impeller to loosen, leading to friction between the moving and stationary parts inside the pump, which in turn can damage those components and affect the overall operation of the pump; it may even pose safety risks. In addition, when the water pump operates in reverse, its head pressure will be very low; in severe cases, no water will be pumped out at all.