Question about Culligan Under Sink Water Filter

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Water comes very slowly from Kent RO faucet and to fridge.

Water outflow from faucet and to fridge very slow. Changed filters . No improvement. Now they say no air pressure in tank, so need to change tank. Only 1 year since purchase. Pl advise

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If it has only been one year, check the warranty. Who said that it needed to be replaced? Oftentimes, a repairman can adjust the pressure to increase the outflow without needing to replace the whole unit.
Elisa Jed ' http://www.multicrafthome.com

Posted on Jan 17, 2014

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Posted on Jan 02, 2017

h2oservices
  • 306 Answers

SOURCE: I can't get a water

If the tank is full of water (pick it up) with 8 lbs of air then the air charge is low and little or no water will come out. Take should have 7psi air pressure when it is completely empty. Make sure all the water valves are on. If feeding RO with piercing valve make sure it is open all the way and has plenty of water pressure feeding RO. If there is no water being created then there will be no water at faucet, fridge or ice maker, assuming they are all tied into the RO.
RJ

Posted on May 12, 2011

h2oservices
  • 306 Answers

SOURCE: I own an old Culligan

It is quite common to loose air pressure in the RO over time. At times the tank will be full of water but will not have enough air pressure to push water out. Take the tank of drain as much water as possible, for 3 gallon tank bring pressure in tank to 7psi, for 10 gallon tank pressure should be 10psi.
RJ

Posted on May 12, 2011

h2oservices
  • 306 Answers

SOURCE: I HAVE A RO WATER FILTRATION MY PROBLEM IS I

There may be several causes for this. Here is a list of things to look for.
1. If an activated carbon filter was installed many times carbon fines will plug up the head of the RO housing. Pull the filters out and flush the whole assembly with NO filters in it.
2. The capillary tube (which puts back pressure on the membrane to create water) may be worn out and all the water will run to the drain. Replace capillary tube
3. The automatic shutoff may not be opening to allow for water flow.
4. Shut the water off at RO tank and take the line off from RO filters to see if any water is flowing from housings.
5. The RO tank may also need air. If the air charge is low in tank (7 psi for 3 gal tank) no water can be forced from the tank.
6. If the RO is fed by a piercing valve make sure their is water coming from it.
7. Depending on what type of RO it is their may be a flow restrictor in head of membrane housing that can get plugged also.
I hope these tips may help you,
RJ

Posted on Jun 21, 2011

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Culligan AC-30 Tank not Filling and Recharge only produces minimal water.


You should change filters and membrane and then proceed. Replace both filters not one. You mat to buy new RO unit that you can find filters on line ie store (less than you are going to pay for Culligan) PROCEDURE FOR RECHARGING REVERSE OSMOSIS BLADDER TANK WITH AIR
When you turn on the faucet you notice low water pressure from the storage tank and only a quick burst of water come out of the system, and it dies down to trickles. Is the tank defective, i.e., bladder has hole and not functioning properly? Perhaps.

If you have the above problem and the tank is heavy (full), then try to relief the pressure from the air valve on the tank side. Is water coming out? If the answer is yes, then the bladder has hole and is defective, and tank replacement is due. If air comes out then it is possible that the air needs to be recharged.

Notes on bladder tank, please continue reading:

RO Tank useful life is 5-7 years. If the tank has been serving you for that long it is possible that the bladder had a hole and that tank replacement is due. If the tank is not that old, it is worth it to evaluate it for air pressure. In an empty tank, air pressure should be 7-10 psi. In a full/heavy tank, air pressure should be 30-40 psi. To be accurate, air pressure should be 2/3 of incoming water pressure. When the tank is full, and if feed water pressure to the RO system is 60 psi, then a full tank should have 40 psi. The RO tank has a bladder inside, and this bladder separates air from water. On the lower side of the tank is the air valve which is connected to the compressed air chamber. The top water inlet/outlet port (where the tank valve is mounted) is connected to the pure water chamber. So, when you turn on the faucet, the compressed air would squeeze or compress the bladder to force the water out of the tank.

You do not want to believe the tank is useless and want to do extra testing? If your answer is yes, please continue reading.

TOOLS NEEDED FOR TESTING:

1. An air compressor or air pump (like a bicycle tire air pump)

2. An air pressure gauge that is able to read less than 10 psi, and

3. Adjustable wrench.

STEPS:

1. Shut off the water supply to the RO system

2. Turn on the faucet to allow water to run until it stops.

3. Check to see if there is still water in the storage tank by lifting the tank. If the tank feels heavy, that means you need to recharge the tank and continue the following steps. If the tank feels light, that means you don't need to charge your storage tank at this moment.

4. Locate the air valve on the side of the tank. It looks like the air valve on tires.

5. Use air compressor or air pump to pump air into the tank. Keep the faucet on while pumping air, so that all water inside the tank can be purged out.

6. After all water has been drained from the tank, use an air pressure gauge to check the tank pressure.

7. The tank should have 7 psi of pressure when it's empty. Add or purge air if necessary.

8. Turn the feed water valve back on, and turn off the faucet to allow refilling of the tank.

9. finished.

What if the tank does not hold pressure and you see the same problem again? Bladder is out and you need to replace the tank.

May 01, 2017 | Tools & Hardware - Others

1 Answer

I can't get a water flow from my RO faucet or from the water dispenser in the door of the fridge...also the ice maker won't work. I just replaced the 3 large filters, and no change. Just a trickle, then...


If the tank is full of water (pick it up) with 8 lbs of air then the air charge is low and little or no water will come out. Take should have 7psi air pressure when it is completely empty. Make sure all the water valves are on. If feeding RO with piercing valve make sure it is open all the way and has plenty of water pressure feeding RO. If there is no water being created then there will be no water at faucet, fridge or ice maker, assuming they are all tied into the RO.
RJ

Mar 31, 2011 | Culligan Under Sink Water Filter

1 Answer

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The pressure on an EMPTY tank should be 8-10 psi. Be sure the tank is empty before checking the pressure. A good way to empty the tank is to connect a small air compressor to the air valve on the tank, open the systems faucet, and turn on the compressor. A bicycle pump works too....Just more of a workout:)

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I would pull out all the filters changed and check them. If a GAC filter is used as the post filter, before the RO tank, carbon fines can come out of the filter and can plug up the head on the RO system. Make sure the sediment pre-filter is not plugged and there is plenty of water supply. You may have lost pressure in the RO tank. A 3 gallon tank should have 7psi pressure when totally empty.
RJ

Jun 20, 2010 | Culligan Under Sink Water Filter

2 Answers

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There is a blue cap on the body of the white pressurized water tank. Twisting off the blue cap, you will see a air nozzle - similar as those on the tire. You need to pressurized the tank to 60 PSI. I spend hours to figure out this solution on my own system.

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1 Answer

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