This is an example of a pump operating without proper water flow coming into the pump.
Heat is generated at a very high level, when it does not have the water to cool the temperature down. There are many reasons why this would happen. Sometime it’s as simple as the pump lid not being tight enough or the o-ring not installed properly. This heat generated can also loosen up the plumbing on the in and out ports of the pump. The motor’s shaft seals can also be damaged. These can become costly repairs.
Watertown would be more than happy to teach new or previous pool owners things to be aware of to save time & money.
