We emptied the water out of our WM6 pressure tank in order to check the pressure. However now that the tank is empty we get no reading from air fill valve.

This looks like a fault. The plastic tank has two reed switches that measure 'tank empty' and 'tank half full'. When the tank is empty the inlet solenoids (there are 2 for safety) open and water enters the tank but not so much to fill the tank to the half way level. In normal operation the level water in the tank will drop and then more water is allowed in. In your case it appears the 'half full' reed switch is being activated because the solenoids are not closing off properly and water is leaking in and filling the tank. If you do not empty it then eventually it will fill and leak into the leak. The problem can be caused by either low water pressure (below 145 psi) or sticky solenoid. If is the solenoid then the Miele solution will be to replace both solenoids. Alternately you may be able to remove, take apart and clean. Also check that you have a mesh filter at connection to tap. Also you can temporarily fix the problem by turning off the water at the tap and re-programming machine to 'turn off' the plumed water line. regards

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.

crack open an injector line and look for fuel at that point if no fuel there, take off oil filtertype fuel filter and look to see if it has fuel in it..we had a ford f650 superduty that a driver ran empty and were forever bleeding att hthe air out of the system to restart it..on diesels the system can have no air in the lines anywhere..so if the filter is empty, fill it before installing it...saves on the starter getting hot...in extreme cases you can pump pressure into the tank up to 20 psi and force fuel up front be careful on plastic tanks though...good luck and repost please...

Make sure all the lines are hooked up correctly. It is going to take 3-8 hours to fill a 3 gallon RO storage tank. It depends on the capacity of the membrane (IE: 14, 20, 30, 50 or 75 gpd). It also depends on the TDS of the water. Water that has high TDS 500+ppm will take longer to produce product water than TDS of 100ppm. Check the pressure in the RO tank. When empty (In a 3 gallon tank) there should be 7psi pressure. A ten gallon tank takes 10psi. If it needs air you can use a bicycle pump to add appropriate air. Make sure the tank valve is turned off when adding air.
Do not use the RO faucet for several hours to allow tank to fill up. Also you should dump the first couple tanks of RO water to make sure any carbon fines are rinsed out.
RJ

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:)

If the water pressure reads 50 psi, then, the submersible pump is running okey. Do these:
1. Shut the power off.
2. Release the pressure of the tank by opening the
gate valve and free the air inside.
3.Drain the water inside your pressure tank empty by
opening the drain plug at the bottom.
4. Then, replace the drain plug .
5. Check the flow control valve. From full close
position, adjust to 1/4 open position. However, if it
is using a gate valve as flow control, Just open two
full turn counter clockwise.
6. Put the power on.
7. And start the submersible pump and allow it to
run until the pressure tank is pressurized.
8. At 20 psi pressure, open your faucet, and see if
you've got water.

I would like to know the result, so just send in your e-mail . Thanks and God bless you.
.
6.

I am assuming based on your description that the system you have is a reverse osmosis system. If this is true, you most likely need to recharge the air pressure in your RO storage tank. I have included step-by-step instructions below. If you find that your tank is not holding air or the tank will not empty completely, the bladder inside the tank may be broken and the tank will need to be replaced. I have included a link to our selection of RO tanks as well. To recharge the tank you will need a bicycle tire pump and a tire gauge that will be capable of reading below 10 psi. If you don’t have one that reads in single psi increments, then a meter that starts at 5 psi will work.
http://www.freshwatersystems.com/c-32-reverse-osmosis-storage-tanks.aspx

1) Close the cold water feed valve (if you can’t locate this on your system, you may be able to turn off the cold water to your sink)
2) With the RO tank valve on, locate the valve stem on the bottom or side of the tank. (this will look like the air stem on a bicycle or car tire)
3) Remove the stem cap.
4) Drain all water out of tank through open RO faucet into sink. (Continue to leave the RO
faucet open throughout the entire procedure)
5) If the current tank pressure doesn’t empty the tank, apply tire pump to valve stem
and pump a few times. Flow will increase and then gradually decrease as
pressure equalizes. Do not overcharge the bladder during this procedure.
6) Repeat step #4 and #5 until tank is completely empty. (Tank is empty when additional
pumping produces no more water)
7) At this point, adjust EMPTY tank to exactly 7psi. (Gauge reading midway between 5
& 10psi is sufficient)
8) Turn off RO faucet.
9) Replace cap on valve stem
10) Open cold water feed valve.
11) The water is useable immediately; however, tank will take a few hours to completely fill.


Geoff D., CWS-I - WQA Certified Water Specialist
Fresh Water Systems, Inc - http://www.freshwatersystems.com 1.877.335.3339

You need to test the air pressure with the tank totally empty, remove the tube that is going into the tank and open the tank valve to release all water, if water is in tank and does not come out your bladder is finished and you will need a new tank, if you are able to get all the water out then you need to test PSI again and it needs to be between 7-10 psi, this way when the bladder fills up again with water that pressure will be the ideal 40-50 psi.

Fresh Water Systems | http://www.freshwatersystems.com | 1.877.335.3339

witch model do you have, for some models thats normal on others its not, some run the water over hot coils and it evaporates others the water goes into a holding tank and sits their til the tank fills up then you must empty. expect more water when high humidity or in the summer

check to make sure your fill bucket is correctly placed back into the unit. there is a safely switch that will not let the unit work without the bucket in place..hope this helps let me know?