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When vaccuming pool,after attaching hose to skimmer water pressure resort to priming stage.wyh?

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You need to pre-prime the hose with water. remove the hose, vac head and pole from the pool. lay the hose out straight (not coiled up). with the pole and hose attached, lower the vac head to the bottom of the pool. carefully feed the remaining hose over the pool wall vertically down into the water hand over hand until the end of the hose is at the water line, water should well-up out of the end of the hose. keeping the end of the hose low at the water line, bring it to the skimmer and through the skimmer opening. stick the end of the hose down into the vacuum port in the bottom of the skimmer pot. this should resolve the loss of flow at the pump from gulping air through the hose.

Posted on Sep 08, 2010

  • l_stubbs Sep 23, 2010

    did exactly as you suggested.worked fine until all the water has passed thru the hose.goes bace to priming mode.when i see air coming out of the water inlets,i can take the hose out of the skimmer opening,when i do that water start to bubbling back thru skimmer.when stop and water return back to normal flo,i can return host to skimmer get strong pressure until the water has passed thru hose.back to primming mode.where is all this coming from?

  • Charles East
    Charles East Sep 23, 2010

    It might be a possibility you have a hole in the hose. Remember that the hose is being used to **** water. not air. The end of the hose (vacuum head) must remain under water at all times. But also understand that if there is a leak, hole, crack or loose connection that is NOT under water, then the suction action happening inside the hose will pull air into that opening, which if enough, will cause the pump to drop prime. Listen for a hissing or gurgling sound along the hose. You can set it up as previously suggested or as John224 suggested and once suction is established, leave the vacuum still underwater and watch for bubbles in the leaf trap of the pump or listen for a hiss in the section of hose not completely underwater.

    Another matter you have to attend to, is keeping the water level up above your skimmer opening(s). If your vac hose is going down into the skimmer pot, the water in the pot must remain full at all times or air will be sucked in when the water is gone. If you have your filter system set to backwash or any other setting that would remove water from your pool, the level is going to drop. so add water as necessary to keep the level several inches above the bottom of the skimmer opening(s)

    Another possibility is a preexisting air leak in the suction line of the skimmer back to the pump. If the leak is really small, it may not pose a significant issue for the pump as far as dropping prime, but would produce a small amount of air bubbles showing in the pump all the time. As suction increases, the leak would become more prominent, which adding the vac hose would do. Your pump should not have any air bubbles present when the system is setup for normal operation on filter and not vacuuming. If there is air bubbles, then you have an air leak.

    Your pump lid o-ring seal must be clean, no cracks, and lubricated with a suitable sealant like Aladdin's Magic Lube or similar product made for this. DO NOT use vaseline or petroleum based products as these will deteriorate the o-ring. Make sure there is NO debris on or around the oring. tighten the lid is instructed by the pump manufacturer. If it is a threaded lid, then hand tighten ONLY! If the lid is leaking air while the pump is running, shut off the pump and immediately tighten the lid some more by hand is possible. Do not over-tighten the lid using a wrench. It will be very difficult to remove later.

    Knowing how your plumbing is laid out would make diagnosing this easier for you. If this is an in-ground pool, you likely have a bottom drain and 1 or more skimmers. In many installations, the bottom drain and the skimmer are plumbing together on the same piping leading back to the pump and might include 1 or more valves to adjust water flow through the skimmers or bottom drain. The valves (if present) could also be leaking air. If they can be disassembled, then they should be serviced to lubricate and even replace any o-rings that could be deteriorated.

    Summarized...
    1. Thoroughly inspect your vacuum hose and attached fittings for cracks holes, etc.
    2. Thoroughly inspect your pump for loose suction connection, lid loose or oring dirty or deteriorated.
    3. Thoroughly inspect any suction control valves for leaks.

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Thank you for posting your question here on Fixya.com.

It happens because you are introducing a lot of air into the suction line when you attach the vacuum hose. Once the pump draws that air thru and expels it you should go back to normal pump flow in order to vacuum. To help eliminate this problem, place the vacuum under the water and take the end of the hose you will attach to the skimmer and place it over a return outlet. This will fill the hose with water and force most if not all the air out. Attach the hose to the vacuum plate and vacuum away.

If this answer does not fix your problem, please comment with additional details prior to rating the answer. Positive feedback is appreciated once your problem is solved!

John

Posted on Sep 07, 2010

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