Back wash is going into the pool

[meleajalea]

Hi!
I have opened my pool several days ago and have thought 3 times now that things were starting to clear up and look better only to realize that the jets keep pumping filth BACK INTO the pool! It seems to happen at two different times. The first is when I backwash. I noticed bubbling at the closest jet and then saw earth and algae flowing out at the same time as water was going out the backwash hose. The second time seems to be when I brush the deep end by the drain. Last night I thought we had really made progress so I grabbed the brush and went around the pool. When I reached the deep end drain, tons of particles began flowing out of the jets. Horrible!

This did lead me to discover that I have been running the pump in vacuum mode even though I have not been vacuuming. In other words, all my pull was at the skimmer and none at the bottom of the pool. I don't know if this is part of the problem or not.

After I fixed this last night, I left the pump running all night. When I came out this morning, the pump was still running and the pressure was about 15 (10 when I started) but there was NO water returning to the pool through the jets. As soon as I bumped it, the jets flowed as normal.

The pump is the Hayward Perflex EC-65 from the 80's.
http://mypool.com/Help_files/Parts_Diag ... x-ec65.htm

Any help is greatly appreciated! Thank you! ---Melanie

 

[duraleigh]

Welcome to the forum. :lol: If water is returning to the pool when you are in backwash mode, I think you have a problem with the multiport valve. It will need to be disassembled and inspected.

 

[meleajalea]

Thanks for the reply! In this exploded view http://mypool.com/Help_files/Parts_Diag ... x-ec65.htm which is the multiport valve? If I look up multiport valve on google with an image search, I see nothing that looks like anything on my pump system.

 

[BoDarville]

A multiport valve looks like this: http://www.troublefreepool.com/help-to-id-multiport-valve-t45712.html?hilit=multiport. It is usually attached to the plumbing leading to the filter but is not part of the filter itself.

 

[meleajalea]

I have nothing like this on my pump. My in laws had this pool built in the 80s and it is still all original, as far as I know.

 

[duraleigh]

Then you likely have a push-pull valve which is defective. It would be a good time to replace that valve and replace it with a multi port. Posting a pic of your filter would confirm that.

 

[meleajalea]

Here is what I have:

 

[meleajalea]

Is it normal to not have either of these valves?

 

[Richard320]

Welcome!

http://www.poolcenter.com/filter-haywar ... manual.pdf

Your filter doesn't have a backflush valve. It appears you bump it a whole bunch, then just let it drain and finish by running it briefly with the drain open instead. Page 5.

But you may have a torn tube inside. Troubleshooting guiide is on page 8 & 9

 

[mikeginder]

Here is what I have:

that pump and sand filter(with multi port valve) can be bought for $375 online.

 

[meleajalea]

Thank you Richard for that help! I forgot about bumping before back washing...and the link to the manual will be very helpful. Have a great summer!