My ESP25 only pumps about 4-5" water in a 18x24" pit with each discharge (leaving ~4" water in pit after pumping), is that normal or something wrong?
1627823
My pump draws all the way down. I do have it on a 2" concrete block to keep the debris and gravel out.
1627824
I agree with the other answers. Mine runs for approx 20 secs on a timer. There is only a top highwater float and not a "shut off float" at the bottom. Your pit is decent sized so there is a lot of water in it circumference-wise to empty in 20 seconds. It should not matter whether there is still water in the pit and indeed you don't want the pump to be running part of the time as dry. I'd rather have a little extra water than not enough such that part of the 20 second run time is dry. 4 inches in the bottom seems just fine. When it fills again the pump will turn on again.
1627825
The switch on this pump runs on a timer, so it will only run for a predefined number of seconds when the switch is activated (I think around 10-15 seconds). It will not necessarily pump until the pit is empty. Also, this pump will likely not drain the sump pit as quickly as your main pump. Have you noticed a reduction in performance, or has it always been about the same performance-wise? Edit to add: If there is a significant amount of lift in the drain line (6' or more) you will see a distinct reduction in performance. Four inches drained seems low, but it depends on your setup whether or not that should be expected.
1627826
It may be normal depending on the height of your run and the number of bends. If you have tall ceilings, a lot of bends in your piping, or perhaps a weak seal somewhere in the installation, you will get different results.
1627827
There is always going to be some water left in the pit roughly 4" inches. That is so the pump doesn't run itself dry. If you want to get the water level lower try adjusting the float position.
1627828
The switch on this pump runs on a timer, so it will only run for a predefined number of seconds when the switch is activated (I think around 10-15 seconds). It will not necessarily pump until the pit is empty. Also, this pump will likely not drain the sump pit as quickly as your main pump. Have you noticed a reduction in performance, or has it always been about the same performance-wise?Edit to add:If there is a significant amount of lift in the drain line (6' or more) you will see a distinct reduction in performance. Four inches drained seems low, but it depends on your setup whether or not that should be expected. The switch on this pump runs on a timer, so it will only run for a predefined number of seconds when the switch is activated (I think around 10-15 seconds). It will not necessarily pump until the pit is empty. Also, this pump will likely not drain the sump pit as quickly as your main pump. Have you noticed a reduction in performance, or has it always been about the same performance-wise?Edit to add:If there is a significant amount of lift in the drain line (6' or more) you will see a distinct reduction in performance. Four inches drained seems low, but it depends on your... » Read More The switch on this pump runs on a timer, so it will only run for a predefined number of seconds when the switch is activated (I think around 10-15 seconds). It will not necessarily pump until the pit is empty. Also, this pump will likely not drain the sump pit as quickly as your main pump. Have you noticed a reduction in performance, or has it always been about the same performance-wise?Edit to add:If there is a significant amount of lift in the drain line (6' or more) you will see a distinct reduction in performance. Four inches drained seems low, but it depends on your setup whether or not that should be expected. « Show Less
843366
Could be a faulty pump. I would either return the pump for replacement, or buy a new pump. They are inexpensive. I have not had any problems with mine. I would alos recommend buying an external power supply like Pyramid Model PS-4KX. I have one of these and I never have any troubles.
1416862
This is a great pump, but it does need a sump pit to operate correctly. There are pumps that would work well in your situation without a sump pit. Once example would be the Tsurumi Pump LSC residue pump. It can pump water down to 1/16". You can find them here on Amazon.
1637086
One of your pumping pistons isn't re-extending for the next pump and so it's only pumping at half pressure.That's how mine died, I haven't figure out a fix yet.
1833528
I have a 3/4 HP and using the smallest tank available which is 4 Gallons .Just what are you using the pump for ? I am watering my lawn without any problem for hours. alex
1702097
It is most likely because you have low water flow/pressure, if you are feeding this with a pump you may need a bigger pump, I f you have a filter system on your water supply perhaps its plugged?
2124803
First try pump alone in pan of water.even on lo some water should flow thru.There is a dial on side of pump minus to plus. Turn it to plus for maximum flow rate.If nothing comes out it probably is defectiveIt should move one half inch tube of water around one foot up
2040462
I measured the O.D. of the largest part of the barb with my caliper and it showed .305". The largest part of the fitting up against the nut, is .313". Mine came with a piece of tubing about 7" long to connect to the a 6 valve outlet port (included). The barbs on the oulet ports measured .205". I've had this air pump for 2 years now running non-stop with zero defects. If all the ports are used the pump is fairly quiet for its size and it really moves some air. When used with airstones the water looks like it boiling. It tends to run a little hot but this hasn't seemed to affect the pumps performance. This pump is little animal. I think it would air up a truck tire. I'd buy it again in a second. Hope this helps. I measured the O.D. of the largest part of the barb with my caliper and it showed .305". The largest part of the fitting up against the nut, is .313". Mine came with a piece of tubing about 7" long to connect to the a 6 valve outlet port (included). The barbs on the oulet ports measured .205". I've had this air pump for 2 years now running non-stop with zero defects. If all the ports are used the pump is fairly quiet for its size and it really moves some air. When used with airstones the water looks like it boiling. It tends to run a little hot but this hasn't seemed to... » Read More I measured the O.D. of the largest part of the barb with my caliper and it showed .305". The largest part of the fitting up against the nut, is .313". Mine came with a piece of tubing about 7" long to connect to the a 6 valve outlet port (included). The barbs on the oulet ports measured .205". I've had this air pump for 2 years now running non-stop with zero defects. If all the ports are used the pump is fairly quiet for its size and it really moves some air. When used with airstones the water looks like it boiling. It tends to run a little hot but this hasn't seemed to affect the pumps performance. This pump is little animal. I think it would air up a truck tire. I'd buy it again in a second. Hope this helps. « Show Less
193501
Mine works like a dream. Have filled it to the max with no problem, but mostly just to the minimum. Yours must be defective.
1877710
I fill my unit I/2 inch from the top. If the water still flows poorly, check the pump, it may have a blockage. Rinse the pump real well. Hopefully this will help.
1117603
Mine works great. I think it works best between 30 and 40% full. Pump it 20 to 30 times.
2118006
I draw water from about 5-feet below the surface. The discharge is about 6-feet above surface. It pushes water up about 2-feet and out about 8 to 10 feet. The discharge end is just the 2-nich opening. Hope this helps.
717016
My best guess is that the pump circuit is very dry and it needs to be primed with an EXTERNAL hand pump. They are avaiable for a small sum.
566029
You may have calcium build up on your machine and it could be giving you a false reading. Unscrew the end unit and hose off any white build up you see. Try the pump again. I actually just did this today and now it's running fine. Good luck!
1833527
I have a 3/4 HP and using the smallest tank available which is 4 Gallons .Just what are you using the pump for ?I am watering my lawn without any problem for hours. alex
1380275
Mine does have a tiny amount of water remaining but not nearly as much as you have. I don't know if that mean there is something wrong. Perhaps try it running on the intermittent timer compare it to running it continuous.
622852
That's the way I am using them (i.e. plugged directly into the tubing, although I'm using 5/8" tubing). In those cases where I am using emitters putting out greater flow (5 and 10 GPH) I use the Rain Bird MBF4PK - Full Circle Micro-Bubbler spikes to avoid "washout" (the stream of water washing out the soil). I have found that occasionally you have a faulty emitter that seems plugged up and puts out less water than the others, but this is probably less than 1 in 20.