When running a bottom cleaner (2 different models, same problem) we lose suction after running over an area of sediment. The cleaners don't get clogged, they're clear. What seems to happen though, is the silt (which looks white like chemical residue) goes straight through the filter (you can see it coming out of the pump after the cleaner runs over a heavy concentration of the silt) and shortly after that, the suction just goes to a minimum. Sometimes stoping and restarting the pump clears it, sometimes I have to run a backflush cycle to get it going again. Any suggestions on how to not lose suction on the cleaner?
My pool filter runs fine when skimming, but when I attach the droid or manual vacuum the basket has sucked air. Do impellers ware out? Is there a seal between the motor and the impeller that can leak air?
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most systems lose suction when vacuuming. this is not a huge problem. in most cases, people forget to close the bottom drain opening in the skimmer when they set up. combined with the pin holes in the vacuum hose, there is always a small loss.
as for loss of pressure during backwash/rinse, if you are just looking at the guage, there will be no reading. as long as the water is pumping out the back, all is fine.
most all pool cleaners generate there motion with a thing called a venturi ! thats inside it usually moves a small propeller from the action of water being sucked hard thru the hose , on most the path to this "propeller" is different than that of pool debris , i suspect this alt path is part ways blocked , a simple way to clear is to connect garden hose to suction port of cleaner and force water Back in other direction other than that sometimes dissasembly is need to lube and clean hidden ports inside
The reason the pump will lose prime anytime is because insted of the pump pulling in water, it is now pulling in air from some source. When you set up the pool to be vacuumed, you must be sure to prime the vacuum hose with water before inserting the vacuum hose into your suction. The easiest way to do this is to: 1. attach vac.head unto the vac.pole and 1 end of the vac hose. 2. holding on the the other end of the vac. hose so it doesn't get away from you. slowly lower the the set up into the pool and make sure the pole doesn't get away from you either. 3. now you will notice part of the hose is filled water and part of it is floating ontop of the water with air still in it. Now while sitting on the edge of the pool, pull the hose toward you to where you think the part of it is now full of water. than slowly feed the rest of the hose, hand over hand until the end of the hose and you will see water come out the end, the hose is now totally full of water. 4. This is the tricky part, cuff your hand over the end of the filled hose and with the pump running plug the end into the suction, re: skimmer or suction port. At this point you might have induced some air into the system and the pump may lose prime or start to lose prime. Go over to the pool equipment and if present, bleed the air out of the filter. Hope this solves your problem.
It sounds like your automatic pool cleaner might have a leak that is causing the pump to lose its prime. Check the hose to make sure that there are no leaks or cracks. Check the vacuum connection. It should be submerged so no air enters the system. Look and check the pump basket lid for looseness, cracks, and worn or missing O-rings.
There are several things that you need to check if these pool cleaners stop working or lose suction. Check for debris or obstructions in the flapper. If you have something making your flapper lose its seal or prevent flapper movement, your water flow can be restricted. Make sure that you filter and pump are not becoming clogged with debris. Make sure that the main drain and all suction lines are closed except for the line you are using to run the pool cleaner.
If you are not getting any suction to the vacuum, but the pump is working fine the rest of the time, start by checking all of your connections that conncets the cleaner to the filter and pump. Make sure there are no cracks, lose hoses, etc. Then, check for the following common problems with your pump that might cause low pressure in pool pumps:
1) Pump not primed
2) Leakage of air into suction system
3) Impeller clogged
4) Valve in suction or discharge line partly closed; Suction or discharge
line partly plugged or too small.
5) Plugged basket in skimmer or hair in lint strainer
Are you filling the hose with water before you put your hose into the skimmer? Put your vacuum in the pool - put the other end of the hose over a discharge ... when the air bubbles stop coming from the bottom ... , put your hand over the end of the hose and then stick the hose into the skimmer suction.
With this model, remove the dust tank, and turn it on, check for suction at the lower intake. If you have suction, install the tank and remove hose, and check for suction there. keep following until youn lose it. Then you problem will be between those 2 areas