jda
01/24/2007, 01:32 PM
This is all probably posted in a marathon post somewhere, but here is what I found.
I modded a sedra 5000 and a sedra 9000 pump. I did everything just like everybody else. I borrowed a meter and I was pulling about 28-30 units (forgot what they were).
After the mod, I was also pulling in too much water and the skimmer chambers were too turbulent. I put a T on each pump and this helped a LOT.
Then, I got to thinking. I need to figure out how to get more air and less water. At the suggestion of another local, I took some putty and made the intake around the venturi a lot smaller. The increase in velocity in the neck really pulled a heck of a lot more air. I also decreased the turbulence in the chamber - which was good. Unfortunately, I don't have the meter anymore so I cannot measure. At one point, I increased the veloicty so much that you could cavitate the pump with all of the air. Luckily, I got the putty out and redid the job.
Next is to figure out how to increase the air by veolicy in a better manner than putty in the venturi neck.
I modded a sedra 5000 and a sedra 9000 pump. I did everything just like everybody else. I borrowed a meter and I was pulling about 28-30 units (forgot what they were).
After the mod, I was also pulling in too much water and the skimmer chambers were too turbulent. I put a T on each pump and this helped a LOT.
Then, I got to thinking. I need to figure out how to get more air and less water. At the suggestion of another local, I took some putty and made the intake around the venturi a lot smaller. The increase in velocity in the neck really pulled a heck of a lot more air. I also decreased the turbulence in the chamber - which was good. Unfortunately, I don't have the meter anymore so I cannot measure. At one point, I increased the veloicty so much that you could cavitate the pump with all of the air. Luckily, I got the putty out and redid the job.
Next is to figure out how to increase the air by veolicy in a better manner than putty in the venturi neck.