The pump and impeller are both spinning however it is not moving any water. When the pump is turned off the water runs freely with no obstructions. With the pump on, there is no water flow. What would you think the problem might be?
Re: the pump is not pushing water through. Wat is the
Try priming the pump. I've had trouble with mine a few times and actually had to close my exit valve and shout some water out of the pump onto the ground through the exit hose. After a few seconds the power may increase. If this happens close the intake valve and reset the hoses to original positions. Typically it will start up at normal stength.
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Re: the pump is not pushing water through. Wat is the
Ure the propeller and shaft turn, but I woulsd dare to say that they are actually turning independant of each other. Sort of like a stripped nut on a bolt. They both look like they are in place and working, but when you add any sort of pressure they just don work the way that they are supposed to. I bet the shaft is actually spinning inside of the propeller, as soon as the water pressure is built up, it fails. Spinning it with your fingers will not imitate the real life pressures exerted on the propeller and shaft, that the water pressure exerts under load (in operation). I would either rebuild it with new parts (new shaft and Propeller) or just go out and buy a new one with a warranty. There is no other reason why this pump will jnot throw water through your system... NO REASON, unless you have the thing hooked up wrong, but I think that would be impossible, wouldn't it?
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The impeller starts to spin immediately.
Fill the unit with tank water before you plug it in. It is not a strong enough pump to pull water out of the tank when it is dry, that would require an air pump. It has to be in water and then it will be able to push that water out which will draw water through the uplift tube.
NEVER run your water pump when it is dry. This will damage the impeller and possibly the impeller housing (the hole it sits in) and then you get to replace one or both of these.
Pour tank water into the filter until it starts to overflow back into the tank. Plug it in after you dry your hands. You should be able to hear the impeller spin. If you hear a noise and then it goes quiet, then the impeller is blocked for some reason and is not spinning. Unplug it and take it apart. The impeller should be smooth with no scratches or burrs that will cause it to catch in the housing in and stop spinning.
For regular maintenance, clean this impeller once ever few months by using a clean toothbrush on the sides of the magnet, on the flat end, and in the hole it sits in. Do this when you do your regular partial water changes.
Start with the power and motor. When it's plugged in is there a noise or vibration? Smoke or burning electronic smell? If there is noise or vibration the pump motor is in working order. If it is still not pumping move to the next step.
Now for the impeller, gently turn it. Did it move? Is the turn rough or sticks? With pumps smaller than 1/8hp you can try carefully turning the impeller while powered on to get it spinning. Larger pumps this is not recommended.
Next check the hose fittings and the pumps seals. Are any fittings lose? Run water around the seams while the pump is running, carefully avoiding the motor and any electronics, if the pump starts to prime as you are running the water you have located the bad seal.
the impeller is usually screw onto the shaft or the shaft has a D (flatspot on one side to lock impeller) so no, the shaft cannot spin without the impeller moving unless the shaft is snapped or impeller is totally stripped (ive never seen either)
if the pump is running but not pushing water, take the wet end off and make sure there is no debris (leaves, worms etc) caught in the impeller fins. you will be amazed at how much that will reduce the performance of a pump
that could mean that your water pump impeller is broken. when you press the gas the remaining piece of the impeller is pushing the water and it actually makes it to the heater core. at idle it isn't spinning fast enough. ask a local autoparts store if the impeller is made of plastic.
Take the hose off the pump, put it in water and turn it on. If it moves water, look for a blockage in the line and nozzles leading up to the blade. If it doesn't move water there may be a small peice of tile or enough of the tile 'mud' in the impeller that it can't spin. Depending on what type of pump you have, if you can, take the cover off the impeller and remove anything that would keep it from spinning. If it does not come apart you may have to force water through it backwards in an attempt to flush out whatever may be in there. If it won't come out sometimes giving the pump a firm wack on the side will knock things loose.
If nothing obvious like blocked / obstructed outlet pipe
You need to check if the outlet pump motor in line with the outlet hose is spinning when in the outlet mode. First check if it is spinning by looking at it and see if the small fan is spinning. If it is turnning this means that it has power and the internal "impeler" that pushes the water out has become loose. Remove the pump (easy job) and repair. If it does not spin you need to determine if the 2 push on terminals have power on. If there is voltage and the motor does nut spin this indicates that the pump motor is open circuit and must be replaced.
I would check for a clog somewhere. Make sure the drain hose is not kinked or clogged. Take a flashlight and look into the suction port on the pump. Make sure it is not clogged and check the pump impeller. Make sure no blades are broken or missing and that the impeller turns freely. If any blades are broken or missing or if the impeller won't move freely, then the pump will have to be replaced. Hopefully it is just a clogged pump or drain line. Hope this helped and best wishes.
This could be anything from a stuck impeller to bad windings in motor. If you open the pump at the lock ring and remove the difusser from the impeller you can see if you can spin the impeller, If it won't move is it something holding the impeller up remove it. If notit is probally a bad bearing and you should replace the motor. If the Impeller turns try turning it on and caerfully try to spin before it kicks the breaker. If it is sort of stuck and does not want to turn the motor is bad and needs to be replaced. If it spins and won't start same thing, If it spins and starts it is probally a start capicator. Shut the power off at the breaker remove the back of the motor the capacitor will be a small black or silver cylinder with 2 or 3 wires clipped to it. Remove this and take it to a motor shop and get an exact duplicate. and that should fix it. When putting back together be sure to lube all "O"rings and refill with water. Hope this helps.
you can take the belt off and turn it by hand to see if it is hanging up and moves freely,take hose off to check impeller inside,most of the time if its lound during spin it's the transmission,if it is a humming sound the water pump-mike