I recently switched out my booster pump motor (like for like). Century 2.5 HP 230V. The existing motor was old (not sure how old because I purchased the home 1 1/2 years ago) and was blowing start capacitors. After three capacitors I went ahead and switched out the motor as it seemed the old one had reached the end of its life. I never had any issues with the old one besides the start capacitor. After hooking up the new one, it fired right up and running great, but is quickly overheating and shutting off (I haven't timed it, but I'd guess 30 min-1 hr). Nothing electrically has changed, but I did test it and I'm getting the correct voltage. Additionally, after purchasing the new motor and it overheating, I was able to switch it out for another new one and still having the same issue.
Is there any reason why replacing the same exact motor would begin to overheat?
Is there any reason why replacing the same exact motor would begin to overheat?