Here is how the story goes.
I have an old pool. The original filtration system had a 2HP pump running the system. It included solar panels heating the pool and a Polaris 180 pressure side pool cleaner.
The old 2hp pump got really noisy and the filter started to rust. So I replaced them with a Pentair, Whisperflo WFDS-4 1HP and MBW 4060, 60ft DE filter.
Polaris was activated through a dedicated line using a T valve (following picture). Turning it all the way to the left would direct the flow to the Polaris and to the right would de-activate the Polaris and would return the water to the pool. Since the flow was too strong, I would place the T valve half way in the middle and it did a good job. (I do not remember what the pressure on the filter gage was)
But now with the 1HP whisperflo, I have to turn the T valve to about 75% to the left to get the Polaris to move. Doing that would get the filter pressure up to 30-32psi from the norm of 20psi when used with filtration and routing the water directly to the pool! Frankly that scares me, wondering whether I am putting excess pressure on the new pump and the filter.
So that is why I am trying to figure out my next step, with the following choices?
1. Placing a new Polaris Booster pump and use my old Polaris 180
2. Purchase a new pressure side pool cleaner that does not need a booster pump (Legend II or Polaris 360)
3. Or continue with my existing setup, which puts the filter pressure to30-32psi?
All your comments are greatly appreciated.