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Thread: Dolphin M 500

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    Join Date
    Jul 2015
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    oklahoma
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    Dolphin M 500

    Thank you to TFP forum and its members! I have been reading for a couple of weeks about robotic cleaners and have finally decided which cleaner to get. I decided on the Dolphin M 500 because of the triple brushes (so it won't get stuck on main drain) and because of the programs. I like that I can clean the floor only, the floor, sides and waterline, or the waterline only. I doubt I will ever use the weekly timer since I will remove it after each use.

    I paid $1199.00 for it which I think is a good deal. A replacement motor costs $389.00 which is also a decent price compared to other robotic cleaner brands. I ordered it on the phone on Saturday and it will be here on Tuesday or Wednesday. Customer service told me the 3 year warranty is still in effect since it was a phone order. This was my main concern of course. Only time will tell.

    From researching I think it will work well with my vinyl liner...I hope. The liner was replaced last year by a (supposed) professional. He measured and ordered the wrong dimensions of the playpool liner. He left a 6ft long "bubble" of liner above the waterline and about 20 or 25 wrinkles in the liner on the walls. He also told me that while he walking on the concrete, the concrete collapsed a few inches in multiple spots. Of course he didn't tell me until AFTER the liner was installed and the pool was filled. When I asked him to remove the wrinkles, he said he couldn't then lowered the install cost to what I had already paid when he ordered the liner. $2000.00.

    So I have a question about the wrinkles, sunken concrete, and the liner. Will the M500 tear the wrinkled vinyl? Thanks.
    16' x 32' inground Foxx sport pool. 15,300 gallons estimate. 1 skimmer, 1 main drain, 3 returns. Concrete bottom with metal side panels and vinyl liner. Sport pool has 3ft depth on each end that gradually goes to 6ft depth in the center. Pentair Intelliflo Variable Speed pump. Hayward Pro Series sand filter #S-244T. 300 lbs sand. Filtration rate-20 GPM/ft2. Filtration and backwash design flow rate-62 GPM. Maximum Working Pressure- 50 PSI.

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    duraleigh's Avatar
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    Apr 2007
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    Sebring, Florida
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    Re: Dolphin M 500

    Will the M500 tear the wrinkled vinyl?
    Maybe / maybe not. Sorry that's not a good answer but I know wrinkles in a pool are problematic. whether or not the M500 can overcome that is a big gamble.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Join Date
    Jul 2015
    Location
    oklahoma
    Posts
    138

    Re: Dolphin M 500

    That's what I thought. It is very difficult the get the manual brush inside the wrinkles to clean. Well, we will just use the liner as long as it lasts. We live 2 hours from a large city so there are not many good repairmen or contractors out here in the boonies.
    16' x 32' inground Foxx sport pool. 15,300 gallons estimate. 1 skimmer, 1 main drain, 3 returns. Concrete bottom with metal side panels and vinyl liner. Sport pool has 3ft depth on each end that gradually goes to 6ft depth in the center. Pentair Intelliflo Variable Speed pump. Hayward Pro Series sand filter #S-244T. 300 lbs sand. Filtration rate-20 GPM/ft2. Filtration and backwash design flow rate-62 GPM. Maximum Working Pressure- 50 PSI.

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