Inspecting the impeller
The impeller is the heart of a pool pump and allows it to do its job effectively. An impeller is attached to the motor shaft and spins the water inside the pump. As the impeller spins, it energizes the water, increases the pressure, and makes the water move.
Keeping the pump strainer basket clean is critical to the performance of an impeller. If the basket is not cleaned properly and is full of fine debris such as sand, it can decrease the performance and even clog the impeller so it cannot start. In addition to checking the basket, service professionals should note any noises from the pump. A noise may indicate debris is stuck in the impeller.
Fortunately, modern variable speed technology, available with select pumps, allows professionals to gather feedback on the equipment in real-time via an app which helps professionals diagnose and fix problems more effectively. For instance, if a pump sends an alarm that the impeller cannot turn, the pump will have to be taken apart and examined
more closely.
While examining the pump, the mechanical seal between the impeller and the motor should be checked, as it can be a common source of water leaks. If leaking, water would likely show up as a puddle forming in the middle of the pump, just in front of the motor. While a mechanical seal typically has a life expectancy of a few years and may wear out, if it is still intact and the impeller is still not working, one can also check the clearance between the impeller and the diffuser for possible debris buildup in the tight channel.
Mitigating mechanical issues
The capacitor was a chief source of mechanical issues in single-speed pumps with induction motors. Now, however, variable-speed pumps are run with a drive on top as a mechanical inverter. While drives tend to be trickier to troubleshoot, there are things a professional should check for if experiencing a mechanical issue and an unresponsive drive.
If a drive is not working, always check the power first. If the power is on and the pump offers IoT (Internet of Things) connectivity, check to see if it is connected to the internet. Today, many pumps include technological advances that allow them to be controlled by an app, making remote monitoring possible and troubleshooting more streamlined.
