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First what brand, model, & size (sqft) filter system is it & what do u mean by "skimmer"? The skimmer is built into the deck of your pool & has its opening off of the wall of the pool & sucks water & debris from the serface of the pool & totally different from your filter system. Atleast for a In ground pool.
I'm not familiar with that particular brand, but if you want to get sand out of your pool you should first make sure you're ready to vacuum (with the plate firmly in the skimmer box and connected to your hose and then to your pole with the vacuum head), then turn the multi-port valve (MPV) to 'waste'. If your equipment is below the water line then water may start to come out your waste line - not a drama. Next, just turn the pump on and you will be vacuuming sand straight through the pump and out to wherever your waste line goes.
Be careful to ensure that you don't let the waterline in the pool get below the level of the skimmer box, because if you start to suck air you increase the likelihood of damaging your pump. A good idea is to top up the pool as much as you can with a hose before you start vacuuming, and then top it up again as necessary as your going along.
If you do need to top up the pool, be sure to get your water tested as soon as you can afterward, then top it up with whatever chemicals you may need.
The Speed of a Navigator is adjusted by water flow. There is no adjustment on the unit itself. The more flow through the unit the faster it will go. If the unit moves too fast or too slow proper cleaning may be sacrificed. The proper flow can be achieved using the flow meter that comes with the unit.
Many pools are set up with multiple shut-off valves in front of the pump. These regulate flow from bottom suction lines, skimmer suction lines, and vacuum suction lines. If you have these valves, make sure the valve on the line the vacuum is attached to is fully open and then adjust the flow by closing off the other valves slowly until proper flow is reached. This is where the flow meter is used.
If there are no valves and the Navigator is moving too fast, an in-line valve is also supplied with the unit and can be used to regulate the flow. This valve is installed between the vac hose and the port where the vacuum is connected to the pool (side port or skimmer).
Thank you for posting your question here on Fixya.com. It happens because you are introducing a lot of air into the suction line when you attach the vacuum hose. Once the pump draws that air thru and expels it you should go back to normal pump flow in order to vacuum. To help eliminate this problem, place the vacuum under the water and take the end of the hose you will attach to the skimmer and place it over a return outlet. This will fill the hose with water and force most if not all the air out. Attach the hose to the vacuum plate and vacuum away. If this answer does not fix your problem, please comment with additional details prior to rating the answer. Positive feedback is appreciated once your problem is solved! John
Oh then you DO need help. To vacuum you don't need to change the valve setting on the filter, but if there is a valve on the intake selecting main drain/skimmer you can select skimmer only, but I usually only do this after I have the hose primed. . You attach the hose to the skimmer inlet. Usually there will be a round plate attched to the hose that fits into the skimmer ( you may have to remove the basket) If you don't have that round plate on the hose, then you can insert the hose driectly into the bottom of the skimmer. Before you attach the hose, connect it to the skimmer head on the pole. Submerge the head and hose. Allow to settle to bottom. Put all the hose into the pool. Take the other end and hold over the discharge back into the pool to fill the hose with water (prime) until air bubbles stop coming from vacuum head. Then hold your hand over the hose (to keep from loosing prime) and quickly attach to skimmer. You may hear some air, and the pump may stop pumping fully mommentairly untill it is pumping full water again. Now you can select the valve to divert all the flow from the skimmer
First connect hose to vacuum head mounted on handle. Put vaccum in water. Take other end of hose and hold over return outlet filling the hose with water until the vacuum floats up and all the air bubbles stop bubbleing. When it sinks again, hold your had over the hose and take it to the skimmer. If you have an adaptor plate for skimmer have it already on the hose. If you don't have one, then remove basket and quickly remove your hand and put hose down ito pipe in skimmer. You will get some air and once the pump recovers, and starts pupming, then begin vacuuming.
You have air infiltrating the vacuum line somewhere. The hose may have a swivel cuff on one end that must be in the water, not attached to the skimmer. Next, check the gasket on to p of the pump housing. Under vacuum, the gasket may bleed air into the system shutting down the pump flow. Lastly, check the skimmer thoroughly for small cracks. Again, under vacuum it may open and allow air to infiltrate. The only way for a filter to go from 10-0 pressure is if the pump loses prime ie: air infiltration. Hope that helps.. Rob
YOU CAN DO THIS 2 WAYS IF YOU WANT TO USE SKIMMER THERE IS A PIECE THAT GOES INSIDE SKIMMER TO ATTACH YOR VAC HOSE TO HEAD O VAC FITS ON END OF POLE TWO PUSH PIN ATTACH HOSE TO VAC HEAD AND INTO SKIMMER IF YOU WOULD LIKE TO BYPASS HOOK VAC SAME WAY BUT DONT USE SKIMMER PUT HOSE OVER POOL AND DRAW WATER JUST ENOUGH TO CREATE A FLOW BY PUTTING THE END OF HOSE OUTSIDE POOL TO A WET VAC JUST LONG ENOUGH TO GET WATER FLOWING DONT KEEP IT CONECCTED LONGER THAN 20 TO 30 SECONDS GOOD LUCK