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  • Page 7 of 18 FirstFirst ... 4567891017 ... LastLast
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    Thread: Diy rdf

    1. #121
      Zoki51's Avatar
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      Monday morning the RDF was off and the pond lost water. I filed the pond and ran only the bio circuit. Went back six hours later to check and lost 240 gallons. Filled it again and lost water... Long story short I pierced the liner with the wooden stake that I used to support the liner when digging the pit. After fixing the hole left the pond to run and everything was ok so Wednesday I put the RDF on and so far it’s running with no problems.

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      Zoran

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    2. #122
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      RDF is running for five days now. Pics of the screen after cycle wash. The other two pics are what came out of the RDF. The pond looks so clear that you cannot believe all that waste was in the water.

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      Zoran

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    3. #123
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      That looks like its controlling the waste....Congrats

    4. #124
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      Hi, Zoran

      Awesome job building the RDF. Very inspiring. Congrats!

      -Kevin

    5. #125
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      The cycle wash looks like it's working perfectly... that is some serious crap collection!!

      Beautiful work Zoran.
      --Steve



      Koiphen 2021 Koi Person of the Year!

    6. #126
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      Looks Fab

      They are unbeatable IMO at waste removal .. You must be delighted

    7. #127
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      Quote Originally Posted by Wolfgang View Post
      That looks like its controlling the waste....Congrats
      Thanks. Still some fine tuning that needs to be done but definitely on its way.

      Quote Originally Posted by abuchi123 View Post
      Hi, Zoran

      Awesome job building the RDF. Very inspiring. Congrats!

      -Kevin
      Thanks, Kevin!

      Quote Originally Posted by icu2 View Post

      The cycle wash looks like it's working perfectly... that is some serious crap collection!!

      Beautiful work Zoran.
      LOL Sure is Steve, but there is still some fine tuning yet.

      Quote Originally Posted by CHICHI View Post
      Looks Fab

      They are unbeatable IMO at waste removal .. You must be delighted
      Thank you.
      Zoran

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    8. #128
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      I disabled the sensor and inspected the drum and spray nozzles. Some of the nozzles were clogged.
      I am planning to put micro screen so the debris doesn’t end up in the nozzles.
      Second thing that I noticed was debris coming out from the side of the cover screen.
      I have a 1/8” seal under the cover, but I am still not getting a good seal.
      I am going to put six more 10-32 button head SS screws.

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      Zoran

      There is no delight in owning anything unshared
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      knows absolutely nothing about the power and strength of human kindness"


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    9. #129
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      Sorry to hear about the issues. I think and hope that they were just small issues and they're easy to fix.
      How do you use the micro screen to prevent debris from getting into the nozzle?
      Thanks-

      Kevin

      Quote Originally Posted by Zoki51 View Post
      I disabled the sensor and inspected the drum and spray nozzles. Some of the nozzles were clogged.
      I am planning to put micro screen so the debris doesn’t end up in the nozzles.
      Second thing that I noticed was debris coming out from the side of the cover screen.
      I have a 1/8” seal under the cover, but I am still not getting a good seal.
      I am going to put six more 10-32 button head SS screws.
      Last edited by KevinT; 09-11-2013 at 10:53 AM.

    10. #130
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      Quote Originally Posted by DCKOI View Post
      Sorry to hear about the issues. I think and hope that they were just small issues and they're easy to fix.
      How do you use the micro screen to prevent debris from getting into the nozzle?
      Thanks-

      Kevin
      Hi Kevin,
      When I started the project I was sure problems will creep up from time to time and I promised myself I will post the good and the bad so people don’t have to deal with the same issues. So far I was lucky, not too many problems popped up. The screen I am planning to use is a simple washer screen installed in the union. I corrected the problem with the cover as I said I installed six more screws on each side of the curved portion of the cover.

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      Zoran

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      knows absolutely nothing about the power and strength of human kindness"


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    11. #131
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      Quote Originally Posted by Zoki51 View Post
      ...... The screen I am planning to use is a simple washer screen installed in the union......
      Got it! It's a good idea to install the screen in the union. However if you draw water for the Jet pump from the clean water side of the filter, the filterred water after it goes thru the micro screen of the drum supposed to be very clean! I was wondering how come it stll has enough debris to clog the nozzles!

    12. #132
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      One of the larger inline screens and holders like they use in drip irrigation systems might work for you. Low cost, easy to service and several size screens are available. .

    13. #133
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      Quote Originally Posted by DCKOI View Post
      Got it! It's a good idea to install the screen in the union. However if you draw water for the Jet pump from the clean water side of the filter, the filterred water after it goes thru the micro screen of the drum supposed to be very clean! I was wondering how come it stll has enough debris to clog the nozzles!
      HI Kevin,
      All nuzzles were clogged with nylon shavings. I drilled 1229 holes two barrels that’s 2458 holes debarring both sides 4916 holes some of them were stubborn and didn’t want to came out. After four days drilling and debarring I figured no problem let them be. The spray of the jet is debarring am now. They are lighter and stay on the surface, as the water drupes down creates vortex on the intake and that’s when the jet pump comes in and they gat sacked in.

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      Zoran

      There is no delight in owning anything unshared
      "We believe .....that the person who says that "nothing comes for free"
      knows absolutely nothing about the power and strength of human kindness"


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    14. #134
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      Quote Originally Posted by BWG View Post
      One of the larger inline screens and holders like they use in drip irrigation systems might work for you. Low cost, easy to service and several size screens are available. .
      Thanks for the suggestion BWG I don’t have room for a holder and two unions are in line already.
      The washers are 10 pcs for $8.00 at McMaster Carr.
      Zoran

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      knows absolutely nothing about the power and strength of human kindness"


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    15. #135
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      Update and observations


      Update and observations
      Over the past few weekends I had time to play with my filter and find the flows and limitations. I introduced lots of debris to the point that the screen would clog up completely and the pump would almost empty the drum and it would start siphoning. At that point the motor was unable to spin the drum because it was too heavy. Even I could not spin it by hand. I had to shut the pump and wait for the water to build up in the outside portion. The weight of the drum is 250 pounds when there is no water in the outside portion of the filter. It sits on the two toilet flanges and the friction is too great for the drum to spin. I decided that 1.5”of difference in water height is best for the cleaning cycle and it is easier for the drive motor to spin the drum. In normal pond operation I had problems with the float to the point that I lost 700 gallons the first time and 940 gallons the second time. It was hard to adjust the sensor so I made a new bracket and float and mounted two optical switches. Top one is for cleaning and the bottom is a fault switch and will shot off the drum and the pumps. With the new bracket and float so far there are no problems. The float is a square tube 0.25” by 0.7” inserted in to ¾” pipe. In order to adjust the height I added sand. The white piece is made of polystyrene and holds the tube square to the optical switches.

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      Zoran

      There is no delight in owning anything unshared
      "We believe .....that the person who says that "nothing comes for free"
      knows absolutely nothing about the power and strength of human kindness"


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    16. #136
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      fascinating... priceless information.
      --Steve



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    17. #137
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      Zoran, If I understand correctly, the second fault switch will cut off power to the pump and stop the filter operation when the water level goes too low! Have you thought of building some kind of by pass/safety weir system so that when it goes to the failure mode, the pump can stilll continue to run and bypass the screen?

      Kevin


      Quote Originally Posted by Zoki51 View Post
      Update and observations
      Over the past few weekends I had time to play with my filter and find the flows and limitations. I introduced lots of debris to the point that the screen would clog up completely and the pump would almost empty the drum and it would start siphoning. At that point the motor was unable to spin the drum because it was too heavy. Even I could not spin it by hand. I had to shut the pump and wait for the water to build up in the outside portion. The weight of the drum is 250 pounds when there is no water in the outside portion of the filter. It sits on the two toilet flanges and the friction is too great for the drum to spin. I decided that 1.5”of difference in water height is best for the cleaning cycle and it is easier for the drive motor to spin the drum. In normal pond operation I had problems with the float to the point that I lost 700 gallons the first time and 940 gallons the second time. It was hard to adjust the sensor so I made a new bracket and float and mounted two optical switches. Top one is for cleaning and the bottom is a fault switch and will shot off the drum and the pumps. With the new bracket and float so far there are no problems. The float is a square tube 0.25” by 0.7” inserted in to ¾” pipe. In order to adjust the height I added sand. The white piece is made of polystyrene and holds the tube square to the optical switches.

    18. #138
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      Sweet, project. You'll really start to understand why commercial drum filters cost so much. Lots and lots of engineering goes into making these things work correctly
      Currency units are a media of exchange and not a store of wealth

    19. #139
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      Quote Originally Posted by icu2 View Post
      fascinating... priceless information.
      Hi Steve,
      I believe that if you don’t share the results with others than the whole thing is for noting.

      Quote Originally Posted by DCKOI View Post
      Zoran, If I understand correctly, the second fault switch will cut off power to the pump and stop the filter operation when the water level goes too low! Have you thought of building some kind of by pass/safety weir system so that when it goes to the failure mode, the pump can stilll continue to run and bypass the screen?

      Kevin
      Hi Kevin,
      The way the filter is designed there is no way to have a weir. If you remember I installed the filter 2” lower than the intended height and because of that if I keep the pond level where it should be I cannot shot the pump off without over flowing the filter so at the same time when external pump shots of the submersible pump turns on located in the barrel before the RDF. They are controlled by the same relay one NO-contact the odder NC-contact. If the power goes out the filter will overflow. I am working on solution to stop the over flow by adding 6” to the 55 gallon barrel.

      Quote Originally Posted by rbarn View Post
      Sweet, project. You'll really start to understand why commercial drum filters cost so much. Lots and lots of engineering goes into making these things work correctly
      Hi rbarn,
      Thank you! Too bad I can’t charge myself for designing the filter. LOL
      Zoran

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    20. #140
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      Quote Originally Posted by Zoki51 View Post
      Update and observations
      Over the past few weekends I had time to play with my filter and find the flows and limitations. I introduced lots of debris to the point that the screen would clog up completely and the pump would almost empty the drum and it would start siphoning. At that point the motor was unable to spin the drum because it was too heavy. Even I could not spin it by hand. I had to shut the pump and wait for the water to build up in the outside portion. The weight of the drum is 250 pounds when there is no water in the outside portion of the filter. It sits on the two toilet flanges and the friction is too great for the drum to spin. I decided that 1.5”of difference in water height is best for the cleaning cycle and it is easier for the drive motor to spin the drum. In normal pond operation I had problems with the float to the point that I lost 700 gallons the first time and 940 gallons the second time. It was hard to adjust the sensor so I made a new bracket and float and mounted two optical switches. Top one is for cleaning and the bottom is a fault switch and will shot off the drum and the pumps. With the new bracket and float so far there are no problems. The float is a square tube 0.25” by 0.7” inserted in to ¾” pipe. In order to adjust the height I added sand. The white piece is made of polystyrene and holds the tube square to the optical switches.

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      I Love the way you `DECIDE` things Sweetie

      The Entire Venture has simply flowed on-the-fly ... little planning / winging it much of the time always SOLUTION oriented .. Wonderful Ingenious even

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