Question about Jacuzzi MAGNUM POOL PUMP 1-1/2 HP MAGNUM PUMP BY

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There is air in my pump. I cannot prime it after having done a backwash.

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Check the seals in your valves.

Posted on Jan 16, 2014

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1 Answer

How do i bleed my aqua-flo flo-master XP2 pump? It starts up in both speeds but moves NO water. I am thinking I have air in a line


your pump will not prime with air in the line. Check the impeller for junk in it. Clear it out by opening the pump lid, and then opening the air bleeder on your filter. That will flush the stuff from the impeller. Check pump lid gasket, and make sure all your baskets(skimmer, and pump) are empty. Prime pump. That should get it flowing. Also, clean or backwash your filter.

Dec 30, 2016 | Pool & Spa

1 Answer

How to replace filter sand


  1. Open air relief and drain plug to allow air into filter and water out.
  2. Take apart filter, remove all nuts/bolts/screws/fasteners and separate the filter. Could need some force to separate
  3. Use a shop vac to suck out the sand or a cup, be careful not to be too violent, if you damage laterals sand will go into the pool
  4. Check the laterals, No cracks or damage
  5. Close drain plug.
  6. Go to pool/home store buy POOL SAND. Amount required should should be posted on the filter somewhere. any extra will go into pool, or backwash out.
  7. Add some water about halfway of the filter, slowly add sand back into filter, dont be too violent. be careful not to get sand into any piping it will go back into pool.
  8. Prime the pump(add water to it) backwash the filter for 2~3 minutes
  9. Close air relief
  10. Run pump on normal open air relief as need to let excess air out .
Done!

Oct 13, 2015 | Pool & Spa

2 Answers

My 24' above groung pool with a 1.5hp pump and sand filter ssems to be losing prime when i hook up my aqua critter. If i unhook the critter the pump re-primes. Any sugguestions as to why?


Your hose either has a hole in it, at the sections at the waters surface where it is exposed to the air? Even a "Pin" hole will create the symptom you are experiencing.
Or... there is a clog in the unit itself.
It appears that you are either sucking in air, or the water flow is being blocked. The pump should pull water no problem through a vacuum hose or a suction style pool cleaner. If the pump loses prime, then "Water" flow is being restricted either physically are mixing with air.

Aug 13, 2013 | Hayward SAND FILTER, PRO SERIES

1 Answer

I have a hayward s166t filter, guage reads 0 and sight glass water does not swirl when backwashed


Does it show pressure when in "Filter" mode?

If not, then your pump is either not primed, Impeller is plugged, or there is not enough water in the pool, you are sucking air.

Jul 18, 2013 | Hayward S166T Pool Filter System w1 HP...

1 Answer

Hayward vari flo valve


Does it filter? Does the pump have full prime? I'm not clear about how when the valve is put in the backwash position nothing happens.

Jun 15, 2013 | Pool & Spa

1 Answer

Does this pump Dynamo DYN 11-n1-1 serial no 1-23-JO9 have to be backwashed and if so...how?


Pumps don't need to be backwashed, some filters do. Sand and DE filters need to be backwashed when the filter pressure has increased to 10 or 11 psi. depending on the manufacturers recommendation. The cartridge filter cannot be backwashed but instead it is removed and a hose sprayer is used to clean out the dirty outside. Your pump does need to be primed so it is not trying to pump mostly air. Each time the pump basket area is low in water then it needs to be primed. You will know how low it can go before it needs to be priming by turning it on when it is low and if it cannot start pumping water at full rate then at that level of water it needs to priming. If it is pumping water at full flow and you turn it off it should not need re-priming because there is enough water in it to force the air through the system. I hope this helps.

Aug 14, 2011 | Dynamo ABOVEGROUND POOL PUMP - 3/4HP -

1 Answer

The filter wont vacumn


The filter is most likely not the issue at all.
When you lose vacuum pressure and see bubbles the problem is usually air getting into the line killing the prime. The most common place that air gets into the line is from the strainer cover on the pump. The clear lid on the front of the pump has an o-ring that is probably due for replacement.
With a bad o-ring it's easier for the pump to draw air through the lid then water through 20+ feet of vac hose. Replace the o-ring, make sure it is lubed well with a non petrol based grease.
The only other issue that may cause this is a cracked or seriously warped strainer lid, which should be easy to recognize once it is removed to replace the o-ring.
Once this is done you should be fine.

Oct 06, 2009 | Hayward SAND FILTER, PRO SERIES

1 Answer

I have no water pressure when I backwash and it does not appear any water is going through the clear jar at top of filter What do you suggest?


Try priming your pump and running it for a few minutes in the normal way, and switching it over to backwash quickly. You may be loosing prime. DO NOT RUN YOUR PUMP IF YOU DO NOT SEE WATER IN THE PUMP HOUSING YOU WILL DESTROY YOUR PUMP. Please rate me if you find this helpful, thanks.

Jun 04, 2009 | Hayward Pro Series 18" Above Ground Pool...

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