Polaris Booster Pump on works for about 3 to 5 minutes and then quits working. After it has quit working and I subsequently turn off the switch (for just a few seconds) and then turn it back on, it will immediately start working for another 3 to 5 minutes. Help please!!
Hello Jessy - I would start by replacing the start capacitor. The capacitor is part number 5270-11. If that doesn’t work, you will probably need to replace the motor,
Thank you very much for your response. One more question: The referenced part no 5270-11 indicates it is 110 volts. My booster pump is 220 volts. Does the difference matter? Thank you!! Finally, my booster pump indicates it is a PB4 LR 51044. Is this the old version of the PB40? Again, thank you!
It is normal for the voltage of the capacitor to differ from the voltage of the motor.
I’m not 100% sure but I believe PB4 LR 51044 is a number used on the newer models. If it looks like the picture below, you have the newer version. If not, you have the older style.
Rob, I said I wouldn’t bother you again but I lied. I swithched out the capacitor switch from another pump (that I knew was working) but it kept doing the same thing, i.e. working for about 3 minutes and then the Polaris would stop completely (but the motor keeps running). I turned it off and waited about 10 seconds and it will work for another 3 minutes and then the Polaris stops (but the motor keep running). I noticed that there is a small leak below the volute. Could that be the cause of the problem? Thank you!!
The leak shouldn’t cause the motor to start and stop. Check the voltage at the motor terminals. High voltage can cause the thermal overload to turn the motor off. If the voltage is within + or - 10% of the nameplate voltage, it’s not the issue.
If the voltage is not the issue, it may be the windings. You’d want to go ahead and replace the motor if it’s the windings.
Are you having to reset a relay when the motor turns off?
Thanks for your help. I suspect I need a new booster pump. I don’t know if it makes any difference, but the motor doesn’t physically stop running. It simply appears to run at a different rpm. When the Polaris stops running, I can hear the differnence in the pitch of the sound emanating from the pump. Perhaps you know what that indicates. Thanks!!