Can I swap a Hayward D.E. pool filter pump motor with Sand motor?

It is generally not advisable to swap a Hayward D.E. pool filter pump motor with a sand motor. While both types of motors are used in pool filter pumps, they have different specifications and requirements.

D.E. (diatomaceous earth) filters require a higher pressure pump than sand filters. This is because the D.E. filter media is finer than sand, so it creates more resistance to water flow. A sand motor is not designed to produce the same pressure as a D.E. motor, so using it with a D.E. filter could result in inadequate filtration and decreased efficiency.

Additionally, the plumbing connections for D.E. and sand filter pumps may be different. D.E. filters typically require a larger diameter plumbing line than sand filters. If the plumbing lines are not compatible, you may need to modify the piping to accommodate the new motor.

For these reasons, it is generally recommended to use the type of motor that is specifically designed for your pool filter. If you are unsure of which type of motor you need, consult with a pool professional or refer to the manufacturer's specifications.