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Thread: clogged main drain

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    clogged main drain

    Has anyone here used a pressure washer & Clog Hog to clear a stubborn clogged main drain? The Drain King rubber do-dad at 50 psi won't budge my current obstruction. I can't dive to get to the MD inlet (way too old). My MD valve at the pad is 5' below water surface level, so I have plenty of gravity head, once the clog is broken. I couldn't find information on length of Clog Hog, but my MD inlet is about 25' from the valve. Once I break the clog, I will have to quickly re-assemble the gate valve, or I will lose all the water in the pool. I have plenty of experience on that score, as I have removed plenty of crud from the valve in the past without losing more than one or two gallons.
    15K gallon in-ground gunite/plaster pool(58 year-old Anthony Bros.), 15'x30', depth 3-1/2'->8' . Hayward Ecostar pump. Hayward DE-3600 filter with Variflow 710XR50 1-1/2" valve. Polaris 380 cleaner & "the pool cleaner (suction)". Main-drain suction disconnected. New skimmer suction plumbing 2" PVC. Single return line 1" copper. Cleaner line 1-1/2" copper, re-plumbed in pump-house (PVC) for either suction or pressure. Hayward 3/4HP PB4 booster pump. Leslie's 260 BTU Coppertherm heater. All new suction interconnect plumbing 2". Return plumbing, filter-to-booster, 1-1/2". Single return to pool 1". All equipment located 2-1/2ft. above pool bottom level ( neg. 5ft. from surface ).

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    Re: clogged main drain

    When I unclog stubborn pine cones etc from a MD that didn't have a cover after my air blower didn't work I used a hayward superpumps exhaust to clear blockage. You might be able to do this yourself by temporarily reversing the plumbing on your system to blow the exhaust of your current pool motor into the main drain plumbing.
    -Kevin
    X-Pert Pool Service
    x-pertpool.com
    X-Pert Pool on Facebook and @XPertPoolServic on Twitter
    22,000 gal / 16' x 32' / Vinyl / Hayward s244t /Pentair SuperFlo 1 hp

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    Re: clogged main drain

    That sounds like a good idea, particularly since the pump would have to deal only with the MD and no other plumbing. Also, when the clog breaks, the resulting "deluge" ( my pad is below sea-level ) would be impeded by the impeller. Capping off the basket port ( normally the inlet ) would stop the flow until I closed the MD gate valve. The main problem, is that the Tristar has a horizontal inlet and vertical outlet. I currently have no unions or o-ring type valves ( with union-like connections ) in either the suction or return plumbing. To temporarily re-plumb would be extensive.
    On the other hand, if I decide to do a major re-do of the pool setup ( re-tile, re-plaster, replace the gate valves with Jandys ) I will have to drain the pool & cut away the pad plumbing anyway. With the MD pipe open, a temporary connection of the pump to the MD pipe will allow me to use it to blow either water or air into it to dislodge the clog.

    Garry
    15K gallon in-ground gunite/plaster pool(58 year-old Anthony Bros.), 15'x30', depth 3-1/2'->8' . Hayward Ecostar pump. Hayward DE-3600 filter with Variflow 710XR50 1-1/2" valve. Polaris 380 cleaner & "the pool cleaner (suction)". Main-drain suction disconnected. New skimmer suction plumbing 2" PVC. Single return line 1" copper. Cleaner line 1-1/2" copper, re-plumbed in pump-house (PVC) for either suction or pressure. Hayward 3/4HP PB4 booster pump. Leslie's 260 BTU Coppertherm heater. All new suction interconnect plumbing 2". Return plumbing, filter-to-booster, 1-1/2". Single return to pool 1". All equipment located 2-1/2ft. above pool bottom level ( neg. 5ft. from surface ).

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    Re: clogged main drain

    You can try a sump pump designed for pumping out basement water, they have somewhat similar power and prime quickly you could use a flexible hose like for an above ground pool and hold it into place.
    -Kevin
    X-Pert Pool Service
    x-pertpool.com
    X-Pert Pool on Facebook and @XPertPoolServic on Twitter
    22,000 gal / 16' x 32' / Vinyl / Hayward s244t /Pentair SuperFlo 1 hp

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