The frequency of maintenance and lifespan of components depend on the type of well pump and the usage. Submersible pumps have a longer lifespan of up to 20 years without maintenance, while centrifugal pumps typically require more frequent repairs due to their mechanical components. Jet pumps may need to be primed before first usage and after a power outage, but otherwise require minimal maintenance. Convertible jet pumps may struggle with water levels over 25 feet deep and may require more frequent repairs. Hand pumps require physical exertion but have a simple design that allows for easy repairs. Overall, the frequency of maintenance and lifespan of components vary depending on the type of pump and the usage, but regular maintenance can extend the life of the pump.