Question about Hayward 1.5 Hp Northstar High Performance Pump

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Low pump pressure

My pump is not priming properly and has low pressure. I checked for leaks on the suction side and cannot find any. Is it possible the impellar as cracked ?

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  • droot2001 Jul 13, 2009

    found the problem

    my strainer was cracked and had leaves stuck in the impellar

    pulled them out and all is great now



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Or blocked.

Have you used pool 'O' ring grease on all 'O'rings - tipped water from bucket on all pipe joins on suction side to see if blows bubbles?

Posted on Jul 13, 2009


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3 Answers

How do I prime my flotec 4022 pump

A number of Flotec pump manuals are available here: . The site lists a FP4022-10 pump with the direct link to the manual here: .

For this type of pump, there should be a priming plug or priming tee. Remove the plug (or tee) and pour water into the pump. Keep adding water until the pump and all of the piping to the well is full of water. If a priming plug or tee was also added on the suction side of the pump, open that section and fill all of the piping on the suction side with water. Replace the plugs/tees then open a faucet in the house. Start the pump. After 2-3 minutes, turn off the pump if no water has come through the unit. Add more water through the priming plug or tee (or multiple plugs and tees). Then repeat closing the priming ports and start the pump after opening a faucet. Once the pump is actually pumping water, turn off the open faucet. Wait for the pump to shut off once it reaches full pressure. Open one or two faucets to check that the pump is properly sensing the pressure changes and maintaining system water pressure.

If the unit didn't pull water from the well, check the piping for air leaks. See the full trouble-shooting guide in the manual. Page 9 has the priming information and page 10 has the trouble-shooting guide.

I hope this helps.

Cindy Wells

Aug 27, 2016 | Flotec Plumbing

1 Answer

I have a intelliflow vs pump and im having a hard time priming. my pump ramps up and trys to prime but there is occasional air in the line. it looks as if its not coming from the suction lines cause i dont...

check the suction side fitting, reset the threads and check or replace the lid o-ring. If there is not air showing in the check valve, it's more likely to be a suction side fitting leak. also be sure to check the impeller for debris.

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My new Optiflow pump seems to not be pulling the water thru the sand filter and discharging as it should. Sand filter gauge fluxuates between 0 and 3 lbs of pressure.

it sounds like you may have a suction side leak on the pump. check the lid o-ring and the suction side fittings to see if there may be a possibility of air being sucked into the pump and causing it to act like it's picking up prime and then losing it.

Jul 25, 2011 | Pentair OptiFlo Aboveground Pool Pump 1 HP...

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Hi my pump won't prime or pump every thing is free and spining but won't pump

4 possible problems: 1. Was the pump filled with water first. 2. Make very sure that there are no air leaks on the suction hose and connectors. 3. Try less vertical lift on the suction side. It can be increased when primed. 4. Check for blockages or damage to the impeller.

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Suction on vacuum is low, pressure in filter is low and pump appears to be louder then normal what's the problem

If pressure gauge on filter is low, then most likely problem is obstruction is suction side of plumbing, which includes a clogged impeller. double check impeller, this can be hard to get to without unbolting the two halves of pump, separating the two, and removing the diffuser so that you can fully inspect the impeller. You can try using a wire with a little barb on the end and trying to pick at the center of the impeller from within the pump pot (where the basket goes), but if this doesn't reveal anything, taking pump apart to reveal impeller is the best bet. Before you take the pump apart, (or after if you've already done so.) make sure pump basket, skimmer basket, and any leaf traps are cleaned out. Make sure any valves on the suction side are fully open to allow as much flow as possible. (you can open and close these later to single out the problem if it is a plugged vac line) Disconnect the cleaner from the wall or skimmer to eliminate a clogged cleaner from the possible causes. A bad o-ring, or air leak somewhere can also cause low, or bad suction. so make sure the pump lid o-ring is sealing properly. Also check the pipe that goes into the pump (suction side) If this is loose, or letting air into system, that will also affect suction. You should be able to find your problem if you check all the above. If not let me know by posting a comment, and I'll help you further. Every pool, and equipment are different, and there are endless possibilities to where your problem can be, but eventually you can narrow it down to the problem. Good luck and let me know how it turns out.

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1 Answer

Running at 20psi

If you pressure is low on these pool filters, there are several things that you will want to check. First, make sure that your system strainer baskets are not dirty or clogged. Also, check the suction side of your pump to make sure that there are no leaks. Make sure taht you filter cartridge does not need to be replaced or cleaned. Make sure your pump is properly primed and that the pump impeller vanes are not blocked. Make sure that your strainer basket is not broken to allow debris in.

Jul 04, 2010 | Hayward Xstream 150 Sq. Ft. Cartridge...

1 Answer

We have a well that has recently lost all water pressure. We have now replaced the points, the switch, the valves, and the pipe from the pump to the tank. We have bypassed the underground piping to see if...

What kind of pump is it? If it is a jet pump, it may need to be primed or the foot valve in the well could be blocked with rust or dirt. On a shallow well or jet pump, check it for suction side leaks. turn it off, and see if water seeps out of any of the joints. A small amount of air seeping in will make the pump airbound and keep it from building pressure.

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I have a Sta-Rite Max-E-Glas II (1.5hp) Pool pump and a Hayward Navigator sweep. The sweep was working then stopped. Pulled it apart found bad bearings replaced them. Ran sweep again worked at first...

Is the pump leaking water? If you lost the prime or are having trouble priming then there would be an air leak somewhere on the suction side of the pump. Poor suction would interfere with the sweep. One way to ell if the pump or suction line(s) are leaking is to examine the inlet basket once the pump is primed. Any air left in there after a few minutes of operation once primed would indicate a leak in the suction/pump.

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When my pump turn on it does not want to work you hear it running but that is it, it sound like it needs to be primed or something to kick in gear

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1 Answer

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The pump is not properly primed due to suction leaks. Check for leaks in your suction line. Check also the integrity of your suction check valve.

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