This is complicated, but I'll try to be simple. Have used Polaris 380 since day one, 40 yrs. ago. Recently noticed dirt was not going out through main drain in bottom, and found that main drain is plugged somewhere between pool bottom and gate valve near pump inlet. Also, the gate valve is frozen in open position. There are two skimmers with dedicated plumbing back to pump inlet. When I shut off the two skimmers, the pump motor ran, but no water moved, so I conclude that the main drain is blocked somewhere.
My pool consultant has both pool construction license, and plumbing. He has done work for me before, and I think he is excellent. His proposed solution was to try to flush through the main drain to clear it, but found the gate valve frozen and not serviceable. Now, his recommendations: 1. get a Zodiac MX8 suction side cleaner, and run it through one of the skimmers, 2. completely close the main drain at the bottom of the pool, plugging the pipe, and the surface opening with epoxy, permanently abandoning the main drain.
My questions: 1. Is it OK to abandon the main drain? 2. With an MX8, can I run it few hours a day (like the old pool sweep)? 3. What pump speed will I likely need to get the MX8 to work? 4. If I'm just running the pump to circulate the water, will I need higher pump speeds to overcome the resistance from the long hose from the skimmer to MX8?
Thanks for insights/advice, etc.
My pool consultant has both pool construction license, and plumbing. He has done work for me before, and I think he is excellent. His proposed solution was to try to flush through the main drain to clear it, but found the gate valve frozen and not serviceable. Now, his recommendations: 1. get a Zodiac MX8 suction side cleaner, and run it through one of the skimmers, 2. completely close the main drain at the bottom of the pool, plugging the pipe, and the surface opening with epoxy, permanently abandoning the main drain.
My questions: 1. Is it OK to abandon the main drain? 2. With an MX8, can I run it few hours a day (like the old pool sweep)? 3. What pump speed will I likely need to get the MX8 to work? 4. If I'm just running the pump to circulate the water, will I need higher pump speeds to overcome the resistance from the long hose from the skimmer to MX8?
Thanks for insights/advice, etc.
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