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My Culligan AC-30 RO system, original owner installed in 2000, started leaking to the drain last night.

It is very faint but noticable trickle you can hear when you are near the sink. When I turn off the water the trickle goes away. I don't have the airgap shown in the newer manuals. I have a line going from the filter manifold to my sink drain. Ideas?

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  • Culligan Master
  • 2,963 Answers

I believe as vague memory recalls their is a back wash or bypass of the ro filter system. Is the leak to the drain from a tube? or from the unit? IF you have a pump, the pressures are high entering the ro filter. If no pump they are no more than the city water. But given the age, plastic parts may be approaching their end of life. I Don't know what that is, but you might google this model and see if anyone is having these kind of problems.

Posted on Mar 28, 2015

  • epaiken Mar 28, 2015

    G, No pump just line pressure from curb. There is a small reserve tank but it has a separate line from the manifold. And yes, there is a line from the mainfold straight to my sink drain. None of the Culligan manuals I've been able to find are installation only, no troubleshooting ideas. I tried several search engines but most folks are experiencing leaks from thier connectors or filter housings. This one seems to be internal. If no one has any ideas I may just look at taking apart and see what the insides look like.

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1 Answer

I have a Culligan AC 30 aqua-cleer drinking water system;after changing the particle filter and the carbonfilter , the storage tank does not fill.I have pumped air in it to pressure 0,7 bar.


When you put air in the tank did you make sure all the water was out of tank? In a three gallon tank there should be 7 lbs of air, 10 gallon 10 lbs of air.
There can be many reasons for no water in tank.
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http://www.johnguest.com/Home/applications/beverages-and-drinks-dispense/Inch-Size-Accessories/LOCKING-CLIP.aspx
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http://www.eculligan.com/support/ac30_owners_guide.PDF
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