After the Texas deep freeze in 2021 I couldn't find a new impeller for my polaris pb4-60 so I went ahead and bought a whole new pump. It worked great until this year. It began making a very loud humming noise and the pool cleaner was not moving. I thought it was bearings going bad so I attached my old pump and switched the impeller over. The noise was the same. So I got a new impeller and tried that. Still making the same noise. How can both pump be acting the same way and making the same noise? I double checked the wiring. Could there be a clog in the line?
2 different pumps, same noise?
- Thread starter jc1of2
- Start date
- Jul 21, 2013
- 52,856
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Do you have flex lines connecting to your PB4-60?
Did you install new flex lines with the new pump?
The flex line can collapse from the inside.
Did you install new flex lines with the new pump?
The flex line can collapse from the inside.
I do have a few feet of flex lines on the inlet and outlet sides. I will check them out. Thanks.
What are the chances both pumps would have a bad capacitor? I'll google how to check it.
- Jul 21, 2013
- 52,856
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
I wired both pump just like the old one. I’ll check the voltage first then capacitor
Ok so the control box is working, voltage to the relay is good, relay switching is good, voltage out of the relay is good, capacitor is good. Double checked the wiring to the pump. Impeller spins freely. In/out lines are not clogged. When I switch it on I’m still getting the humming noise but I gave the back of the pump a spin and it started to run but very erratically. Turned it off and on but the hum came back.
Is the input voltage measured at the pump correct and does it match the wiring?
What is the input voltage measured line to line?
What happens to the voltage when the pump tries to start?
Check the frequency.
Can you show the wiring in the pump?
What is the input voltage measured line to line?
What happens to the voltage when the pump tries to start?
Check the frequency.
Can you show the wiring in the pump?
The voltage at the pump is correct and it does match the wiring, 240. I am going by the wiring diagram on the pump. The voltage going to the pump after the relay is switched on is the same voltage before the relay.
Can the capacitor be bad if the multimeter is reading it is within the correct parameters?
60hz on both sides of the relay before and after it switches on.
245 volts before the relay and 233 after the relay when it’s switched on. I tested the voltage down at the pump at it is also 233 when switched to “on”.
Attachments
It’s working. I moved the newer capacitor on to the old pump but nothing happened. So I decided to reattach the newer pump and swap impellers. I also noticed the circuit board on the old pump was broken. That may have been the cause! Thanks for the help.