does the pump run all the time and will hold vacuum when off
1156633
The pump has a pressure switch that will automatically turn it on and off as needed to maintain vacuum.
1156634
no, it stops and starts, a noisy thing if you do not use the included rubber mounts. it requires a special electric plug, which i was not able to find...
1156635
If you don't have any vacuum leaks, the pump shuts off at about 16 inches of Vacuum and holds till it needs to pull back down.
1156636
usually it only turns on when requested for example 4x4 with vacuum lockers or blend doors on your ac when something like that is turned on it turns on the pump
1156637
I used mine to make a brake bleeder. It cycles off around 17 in hg and will hold unless there is a leak. I believe it cycles on again around 13 to 14 in hg.
1207774
My old central vacumm did go on automatically when hose was plugged in. The new system does not. It has an on/off switch on the hose handle. I prefer the new system, where you don't have to go back to the wall and unplug the hose.
1664124
We've had no issues with it at all. Provided it is set up correctly, and the maximum speed/suction set, it will only shut off if the water flow is stopped or slowed dramatically. Our vacuum hose has a pressure relief where it connects in the skimmer, so if the flow rate is too high excess water is drawn directly into the skimmer, bypassing the vacuum. This might be why we haven't had any issues. It's also important to run the pump at a speed no higher than is needed to keep the vacuum head moving. Running it at a higher speed wastes electricity, doesn't improve vacuum performance, and may make the pump overly sensitive to small flow rate changes. We've had no issues with it at all. Provided it is set up correctly, and the maximum speed/suction set, it will only shut off if the water flow is stopped or slowed dramatically. Our vacuum hose has a pressure relief where it connects in the skimmer, so if the flow rate is too high excess water is drawn directly into the skimmer, bypassing the vacuum. This might be why we haven't had any issues. It's also important to run the pump at a speed no higher than is needed to keep the vacuum head moving. Running it at a higher speed wastes electricity, doesn't improve vacuum performance, and may... » Read More We've had no issues with it at all. Provided it is set up correctly, and the maximum speed/suction set, it will only shut off if the water flow is stopped or slowed dramatically. Our vacuum hose has a pressure relief where it connects in the skimmer, so if the flow rate is too high excess water is drawn directly into the skimmer, bypassing the vacuum. This might be why we haven't had any issues. It's also important to run the pump at a speed no higher than is needed to keep the vacuum head moving. Running it at a higher speed wastes electricity, doesn't improve vacuum performance, and may make the pump overly sensitive to small flow rate changes. « Show Less
109058
This is a vacuum pump - it just pulls air. It sounds like you need an air compressor, which has a tank on it.
787345
I a believe it does Yvonne. I put it in as a designated line which I can keep running or throw a switch on the post. Sorry..I'm not technical, but I believe there is a on/off switch on the pump...but would not advise using it that way.
832051
No the suction is from the bottom of the pump. The pump is only partially submerged before pump kicks on.
794844
Sorry, I don't know. I've only had mine for several months and have had no problem, except that it functions on vacuum overkill.
1968865
That's exactly what I use it for, and it does a great job. Just beware of the on/off button. It's VERY difficult to push backward to turn off. But the vacuum does such a great job, it's worth that aggravation.
249137
No. you have wind it up yourself around the section between the body of the vacuum and the wheel base, but the vacuum is worth having to wind the cord up yourself. It is a really good little vacuum!
474270
Yes it does. It's a foot pedal on the rear of the vacuum that's very easy to switch on and off.
1673288
None that i know of. It will just continue to pump air. Didn't know that the unit had an on feature. Good luck
1587850
Yes this has the low pressure cut off switch so you can hold the arm on to let the pump start again. Hope this helps.
718562
The short answer is "yes", otherwise the "source" liquid you are trying to pump can't get started when you turn the pump on. Also, the machine generates a lot of suction and after cleaning up a mess from failed garden hose collapsing and connections leaking, found that a set of washing machine hoses were sturdy enough to hold up.
834817
It does. You have to hold the vacuum directly on it to pump, because it does not "click into place" or any such thing. But as long as you hold it snugly against the bag it works just fine.
101348
This pump primes itself when switched on ; then only runs if you trigger the sprayer wand. I've had no trouble with mine after spraying pesticides and weed killer.
2211647
Yes, we have been running it 24/7 since we purchased it. We have unplugged it once for an afternoon to clean it. We use it in the room where the litter boxes are so it needs to run constantly
620900
Yes, the air pump is meant to run continuously. You can adjust the amount of air being produced with the adjustable dial on the pump according to your needs.