I have a Hayward SP1580Z2 pump. I needed to change the impeller seal and in doing so took off the thing behind the impeller shaft that looks like points. Now after I reassembled, pump trips breaker on my 20AMP line. If I plug it into a 30AMP line, it will run but has very low pressure. I'm certain I should adjust "point gap" but can't find any posts on what the gap should be. Can anyone help me?
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Re: Hayward Pump Motor low pressure...
The "points" you are talking about sound like the contacts. These are closed for starting and open when the shaft turns at a set rate to change to "run" mode. They are not adjustable. Underneath the contacts is a small part with 2 springs that moved when the motor starts turning. This whole assembly is a centrifugal switch. I would take the assembly apart and re-install it. Make sure the "bracket" is seated correctly on the shaft. The motor shaft end is grooved so the "bracket fits tight. When installing the contact assembly, make sure the contacts rest DIRECLTY centered over the tab in the middle of the "bracket". Its a bit of a job, but if you are mecanically inclined, should be no problem.... Good luck...
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open & dismantle pump from motor. Some will have thru bolt motors all the way thru the motor, heads of bolts are (4 each) visible & accessible at back of motor. Loosen these & your wet end will be detached from the motor once the impeller is removed. To do this, block and prevent the shaft from spinning - normally there is access to the shaft which is located at center behind a cap at the back of the motor. Then unscrew the impeller from motors shaft.
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The leak is likely caused by a defective pump seal. If you look at the parts breakdown at http://www.star-pool.com/assets/Hayward-Pool/Hayward-Manuals/Hayward-SP2610X15-Super-Pump-Parts-Diagram.pdf you can see the seal and the other parts that must be separated in order to replace the seal.
THE HARD WAY!
Once you are sure the seal is defective you need to buy a new one along with a diffuser gasket, a pump housing gasket and some pump gasket grease.
The 4 housing cap screws and the impeller must be removed in order to remove the 4 motor cap screws. The hardest part of this process is removing the impeller. The cover on the other end of the motor should be removed and the motor shaft held with a wrench. The impeller must then be removed by turning it with a large pump pliers or by inserting a screw driver into one of the holes on the outer edge of the impeller in order to turn it counterclockwise with the shaft held with the wrench. If this damages the impeller it should be replaced.
Now remove the 4 motor cap screws and everything is apart except the seal. Half of the seal can be removed from the motor shaft and the other half from the seal plate. Placing a socket on the back side of the seal that is on the seal plate allows the seal to be removed by tapping it with a heavier tool (hammer or pump pliers). Clean this area, apply a little silicon adhesive to the area and insert the new seal half into the seal plate using the instructions that are included with the seal.
Use pump gasket grease on the pump impeller gasket and reassemble the completely reassemble the pump. THE EASY WAY! Remove the piping from the motor and the electrical conduit and wires from the end of the motor. Bring the pump to Leslies pool supplies (I don't work there or own any of their stock) . If they are not very busy then they will do the above and only charge you for the parts while you wait.
I have replaced so many seals I almost always do it myself at the pool site but it is not easy for the first timer.
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You forgot to replace the most important part...The" shaft seal".It is behind the impeller. Be sure to remove all the pieces of the old seal off the impeller ,(they always come off in pieces) and put silicone on the rubber part that sets in the pump housing. Make sure you keep the white porcelain surface perfectly clean, and you will also need to replace the ribbon gasket again.
You will need to disassemble the pump and check the impeller. remove any debris and try turning the impeller by hand. If it does not move or is dragging, you will need to overhaul the pump. Possibly a shaft seal leak has damaged the motor bearing(s). Replace the shaft seal and motor bearings. If the motor is badly deteriorated, you might need to replace the motor. Note... the impeller turns counterclockwise to loosen. you may need special tools to grip and hold the motor shaft and the impeller to prevent damage to the impeller. If the impeller is seized on the shaft from rust, you may have to break it to get it off. reassemble with teflon lubricant on the shaft threads when reinstalling the impeller. This will prevent seizure later.
The pump seal is leaking and needs replacing and requires removing four 3/8 bolts (9/16) wrench and removing the motor then the diffuser to get to the impeller and seal . A 7/16 wrench holds the rear motor shaft behind the springs and impeller spins off to reveal the seal which has two parts one on the impeller with a spring and one in the seal plate is white ceramic/ porcelan whatever they use. Part number is an SPX1600KA on super pumps and 1500KA wassome above grounds. When replacing do not touch the mating white and black surfaces with your fingers.
The seal is located behind the impeller. Once you remove the impeller it is fairly obvious how to replace it. Basically, unscrew everything, replace it and put it back together again. There is a decent diagram on page 11 of the Hayward owners manual found here if you need it.