Hi everyone. I'm new to TFP. I recently bought a home with an inground pool in the yard. I know there's at least 20,000 gallons in it. It hadn't been open in almost 5 years. Without all the details, I got the water to the point where it's clean, swimmable, and ready to vacuum. I'm not having much luck and i'm seeking advice.
Some more notables about my pool and filter - I have 2 skimmer baskets. the separated pipes join somewhere underground because only a single pipe comes up from the ground to go into the filter. I have a hayward gold 1.5 hp pump. It's brand new. The old one had a bad bearing and was on the way out. Also now is the insides of my filter, which is a hayward DE-3600.
When in filter mode, the filter gets and keeps excellent prime. It has been safely assumed by myself and a good friend who does pools that the system itself has no spots where air could be getting into it. Once I try to vacuum however, I lose prime and suction over time.
Here's what I tried... and sorry in advance for the lack of proper terminology for any of the parts.
I have a 36 foot hose that LOOKS like new. It was left behind by the previous owner. I have the plastic triangle vacuum head with brushes in several strips underneath. I also have the standard filter cap that the hose connects to in order to connect the vacuum.
Before connecting the vacuum, I was told by a staff member at Leslies to power off my filter before doing any of this, so starting with filter off.
First, in the filter furthest from my pump, I installed that black plastic thingy to block water from being sucked out of that filter. Next, I took my time priming the hose, and I assume I got all of, if not most of the air out of the hose. I connected the vacuum head underwater. Next, I placed that filter cap over the other filter. I took the other end of the vacuum hose under water, and flipped it on top of the vacuum filter cap as best as i could. Next, I held the cap and hose tightly as I asked my wife to tun the filter on. Immediately, everything was pulled in tight and I seemed to have suction. I walk over to look at the filter basket only to see that it looked like it was losing prime, but it never ran completely dry. So I hopped into the pool to vac and I felt suction. It was weak to say the least, but it did work at first. I vacuumed for about 10 minutes until there was no more suction. Now, I checked the filter basket and the pump had seemingly lost prime. I hopped out of the pool and asked my wife to hold the vacuum hose and cap onto the basket. I switched the filter to off. I added water to reprime. Sealed it up and powered on. I was off and running again for about 10 minutes but again, the suction was weak and I again lost prime. I gave up at that point. I reprimed the filter and it ran all night, again no issues or loss of prime. ANY help or advice is appreciated. Thanks in advance!