Hi,
Hopefully someone here can help with an issue on pool pump motors. I have a Hayward Superpump Dual speed 1.5hp. Pump model SP2610X152S. Motor model SP1610Z2MSC. Pool was installed end of 2017 with no use and immediately put away for winter after initial tests (pool in PA). For 2018 pool ran 5 months no issues. 2019 pool was started late april and run for a few weeks. Normal run schedule once pool clears I run on low speed only during daylight hours. So original pump motor had very light usage. A few weeks after startup found pump not running during the day...was set on low speed. Pump hot to the touch. After cooling it would start on high speed and run...but wont start (hums) on low speed. If i run in high speed and switch to low it will run. Since my normal usage is low speed on a timer switch, I cant run as I want to without fixing the issue. I contacted the pool installer and electrician and they both recommended a new motor. I researched online and found that generally issues with a motor humming means a bad capacitor. I got an exact replacement...did not fix the issue. I called Hayward and through email was able to arrange a new motor to be sent out through a one-time warranty concession. It is an exact replacement of stock motor. I swapped the motors and seals, started it up on high...it ran...turned it off...switched to low...and when I tried to start...it just hums. So its not a capacitor issue (or shouldnt be as Ive tried 3 different ones) I checked voltage at the two terminals on pump while running and im getting 240v. (235 to 237ish). Some things im not familiar with...this motor has hardly any info about it online. When this motor starts up and shuts down there is a clicking sound as a contact on some white square (switch?) hits 2 contacts on the rotating centrifugal switch. Is this clicking normal ... my last pump wasnt making this sound and I cant remember if it ever did at initial install. This pump only has a run capacitor on top of motor and no other start capacitor under the rear cap. Is there any adjustments I should be aware of concerning the centrifugal switch or the way it is contacting the other white square (switch?)...i say switch but im not sure exactly what it is cant find any info or parts diagram to tell what it is. Anyone else have similar issue with these dual speed pumps? I like the low speed to save energy but if they are a constant issue i may go to a variable speed. Thanks for any help.