A pool pump can overheat in two ways: because of an electrical problem or friction. While electrically related failures are by far the most common cause for pump overheating, as we will discuss at length, there is also the potential for a friction fire to develop if a pump is starved for water.
How long does a pump motor last? Most pool pump motors last at least 6-8 years, often longer. But that's if you're referring to magnetic drive pool motors, which are used in newer variable speed pumps.
Several factors can cause a pump to draw too much current. Among those are the pump is operating at the far right hand of the pump curve; a mechanical issue such as bad bearings; a bad winding in the motor; or the pump is wired to the incorrect voltage.
High or low voltage supply
In order to overcome load or inertia at a stand-still, the motor's running current will be much too high under load. Incorrect voltage supply will make the motor work harder and could cause it to overheat.
On average, pool pump replacement costs about $440, average prices ranged from $80 to $800 for pool pump replacement in the US in 2020.
The pump is losing power.
Over time, older pumps can begin to deteriorate and lose power. In other cases, you might need to clean the filter or have it backwashed.
A replacement motor is generally going to cost you in the neighborhood of $150 – $300 depending on the horsepower. Add another $15 – $30 for the absolutely necessary, non-negotiable new shaft seal.
When a pump loses prime, or stops pulling the water to itself, this reduced or nonexistent flow of water causes the motor to run hot. If this happens for long enough, parts on the wet end (basket, trap, etc.) may warp and the motor is susceptible to burnout.
Anything that restricts the water flow on the suction side of the pump will cause low water pressure. That includes a blockage between the skimmer and the pump as well as pipes that are too small. To check for a blockage, remove the skimmer basket and check for debris in the pipe.
When determining the magic number of replacement parts cost versus the cost of the whole pump, we generally suggest 60-75% as the standard. If the cost to repair is within or over this range, it is smarter to replace the pump. This way you have a brand new pump and warranty covering any mishaps down the line.
Most of the new generation of pumps are already equipped with automatic controls and safety features. In fact, if you take enough time to learn the manual, you might find yourself able to repair some of the problems on your own. Of course, there are repairs and replacements are best left in the hands of professionals.
A Rule of Thumb
Generally running your pool pump for 12-hours a day is a good option. This is based on the assumption that your average pool pump has a turnover rate of about 8 to 12-hours. That means that the total volume of your pool water will filter through your system 2 to 3 times per 24-hour period.
Can Water Pumps Overheat? Water pumps that are overheating can shorten their life and cause piping surrounding them to malfunction. It is possible for even brand new pumps to get too hot and stop working, so they need to be replaced.
Motors can reach up to 200 degrees before bearings can begin to breakdown, so 115-200 degrees is a safe “hot” temperature for your motor. A pool pump motor uses insulation classified as level 'B' that allows the motor's internal temperature to reach up to 256 degrees.
Only while it is active can the filter be effective at removing dirt. Therefore, you should ideally run your pool pump for as long as possible to ensure your swimming pool stays clean and healthy. However, the reality for many pool owners is that we simply can't afford to have a pool pump running continuously.
The guts of the pump are made up of gaskets, impellers, diffusers, and strainer baskets. All these parts make up the wet end but without something to drive these parts, they are merely pieces of well-formed plastic. The part that makes it come to life is the motor.
Why does the pool pump loses pressure after a few minutes? This might happen due to a few different reasons. There might be clogs or dirt on the pool filter. Even debris stuck in the draining hose and motor might be the reason.
Normal pressure for most pools is between 10 and 25 PSI (70-170 kPa). The pressure for filtration systems varies depending on the type of filter, the size of the lines, the pump and other pool equipment.
Your pump could be leaking water, or the bearings might need to be replaced instead of the entire motor. Screeching is also a sign that your motor bearings need to be replaced. These loud, often painful sounds could also be a sign of rust or oxidation, making it more difficult for the bearings to do their job.