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My pool filter is not moving water. I tried to prime it

Customer Question
My pool filter is...

My pool filter is not moving water. I tried to prime it several times and it does not have suction. The intakes are not obstructed. The motor is working.

Contractor's Assistant: Who manufactured the pool?

It is a Hayward pump 3/4 HP.The model number is ***** off but I think it is a 900 E cartridge filter..

Contractor's Assistant: Do you plan on doing the work yourself?

Yes

Contractor's Assistant: Anything else we should know to help you best?

Not that I am aware. can I dismantle the pump to see if the impeller is damaged? CAN THE IMPELLER BE REPLACED?

Submitted: 9 months ago.Category: Pool and Spa
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Answered in 40 minutes by:
11/7/2017
Pool and Spa Expert: David Bowden, Pool and Spa Certified replied 9 months ago
David Bowden
David Bowden, Pool and Spa Certified
Category: Pool and Spa
Satisfied Customers: 1,310
Experience: Owner at Floridaco
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Pool and Spa Expert: David Bowden, Pool and Spa Certified replied 9 months ago

I​f the pump has a hard time priming most likely it is because you have air trapped in the filter that needs to be released. Once released the pump will have greater suction (because it doesn't have to try and overcome the stored air pressure) the was preventing the pump from priming. The best way to do this is at the top of the filter near the pressure gauge should be a release valve. If not I highly recommend you install one to save a lot of headaches later. Here is a link showing a few examples of the relief valves with the pressure gauge attached. In addition once the air is released the normal pressure on a clean filter is around 10-12psi if the pressure is higher than 20-22psi it is time to backwash. Air can enter into the system in many ways, but one of the most common ways is from leaks. Any equipment leaks need to be repaired, other wise when the pump shuts down air is now being drawn in and eventually the pump will lose its prime. Think about a straw in a drink. Put your finger over the end of the straw, bring the straw out of the drink and the liquid remains, release your finger and the liquid drains away quickly as air replaces it.

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It has been my pleasure providing an answer for you today, however if additional service is needed, please use the reply box to let me know and I will respond back once I have the requested information.

Enjoy the rest of your day,

Dave

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