Question about Jandy PHP High Head Pump 2 HP Up rated

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I've got a Jandy pump. Sometimes, when the pump is off, I see a few small air bubbles at the top of the pump lid. Is this normal. No air comes out of the returns.

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Well, normal is a relative term.... But not uncommon at all. In theory there should be no air getting into the system. In reality air sneaks in through a number of places, such as loose connections and fittings, old o-rings, and also when I cleaner comes out of the water, or water gets low and air sucks into skimmer, or if skimmer door sticks, etc., etc. As long as the pump is not running dry a little air hurt anything. If however you have a tab chlorinator, and air is trapped here this can be bad as chlorine gas is very corrosive. A lot of air trapped in the filter can be bad as this can create hydraulic pressure and cause undue stress on the filter. If the filter is working properly air should be forced through the filter and back into the pool. Open the air bleeder on the top of the filter occasionally after the pool has been running awhile and make sure there is not a lot of air trapped inside. Hope this answers your question. let me know if you need further assistance by commenting on the post, and don't hesitate to m give a positive rating if you found this helpful. Thanks, and Good Luck!

Posted on Sep 29, 2010

Testimonial: "Thanks for your feedback. Its a new saltwater pool. Can tightining the pump lid while the pump is on be harmful...should you not do that? thanks."

  • 2 more comments 
  • Imthedude Sep 29, 2010

    macdirk- do you mean that some air can be trapped by the polaris (pool cleaner) coming out of the water periodically?

  • Derek
    Derek Sep 29, 2010

    Um, Yea, that's not advisable. With some pumps it's not a big deal, but the bottom line is when the system is running the lid is being sucked down pretty tight, and so it's hard to tighten. It's always best to turn off then adjust. If in doubt replace the o-ring, and only use enough lube to make the o-ring moist, not all gooped up. Believe it or not too much lube actually can allow air to get sucked in easier. Some pump/lid/o-ring combinations will seal well even when o-ring is old and worn out, others will leak even if the o-ring is just a little worn. if you over tighten the lid, eventually it can crack or break, and a lid cost a lot more than an o-ring. If you damage the pump itself, well you know that aint cheap. Lid should only be hand tight, not wrench tight. if the lid pump and o-ring are all clean, new and lubed properly just snug should seal nicely. If it's currently all gooped up, and dirty, etc, (or if it gets this way in future) clean it up really well then reapply lube as stated above. "Simply Green" or other similar household degreasers, (or even paint thinner), and a soft to med bristle brush works pretty well to clean the old lube all up.

  • Derek
    Derek Sep 29, 2010

    well if it's a suction cleaner, and the cleaner comes up out of the water, then yea some air can get in the system. But, as i stated earlier this isn't a big deal. If the filter is working properly (the internal air bleeder screen not all plugged up) then the air should bleed out on it's own. I only mentioned this to explain a common way that air can get into the system. If there is a little air in the top of the pump pot, that's no big deal. Depending on the power and flow of your pump sometimes this will churn and get sucked right through the system in seconds, with some setups, it will always just always seem to have a little air trapped in the lid. not necessarily a big deal, as long as things sound and work fine. if you have constant bubbles flowing back into pool, then there is a definite leak somewhere. For example, lets say your system works perfect and there are no air bubbles coming into the pool, or trapped in the pump pot. If the cleaner climbs the wall, comes out and sucks in some air, this will obviously run through the system and blow back into the pool. this could happen in seconds (more likely a minute or two), or it could sort of get trapped in the pump pot, and filter, and maybe slowly blow tiny bubbles into the pool over the next 10 or 20 minutes.

  • Imthedude Oct 16, 2010

    Thanks again for taking the time to help me with my questions.

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