I have posted numerous times on other pool sites to no avail.
I have a 60,000L inground pool with two returns, 1 skimmer, 1 main drain, an old duraglas pump, and swimquip filter. I want to get the main drain working to get more adequate circulation. For the record, the skimmer is a Jacuzzi Model W.
The main drain is plumbed into the bottom of the skimmer, and there is a moveable flap what has a couple of positions on it. There are 3 settings, 1, 2, 3, and max skim, which probable relates to skimming somehow. The other position says vacuum, which its in now. If i'm not mistaken, I should need some sort of skimmer float to get a 50/50 mix of skimmer and main drain.
Any input would be appreciated.