Question about Air Tools & Compressors

Open Question

Why does pressure in captive air tank keep getting higher?

I checked and set the pressure in my captive air tank by the proper procedure to 40 pounds( shut off pump, drain system of all pressure , check tank pressure, set to 2 pounds below cut-in pressure of pump). After a short ime noticed that my water pressure would drop to almost nothing before the pump kicked on; a classic symptom of the pressure in the captive air tank being too high. When I checked the pressure in the tank again, by the same method (pressure drained from system) it read 55 pounds. I thought I screwed up so I readjusted the pressure to 40 pounds. The next day the same thing occurred. I checked the pressure in the tank (again, after draining the system) and the pressure was back above 50 pounds. Yesterday I set the pressure at 10 pounds. The water pressure in the house seems good now. I checked the pressure in the tank (again after draining the system pressure) and it's now at 13 pounds. Can someone please explain how the air bag is gaining pressure???

Posted by on

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
Krazytech
  • 725 Answers

SOURCE: I have a whirlpool front load washing machine model WFW8300SW00

Hay Crab.
what I have found is that the washer thinks it is not pumping out .. if your drain pump is clearly removing the all the water in a good time... then the problem is your pressure switch...it is telling the computer that it still has water in the machine...

replace the pressure switch and it will solve your f21 error.

It is a round unit on the right hand side on top...with a tube and wires going to it...let me know if it helps

Posted on Apr 05, 2008

Ad
  • 1 Answer

SOURCE: whirlpool duet sport wfw8300sw00 f-21 error

Unplug the machine. Unscrew the 3 screws under the front edge of the washer. The service technician manual is attached to the panel that slides down and off. Find F21 code. See suggested procedures. Note: My drain pump filter had a baby wash cloth in it along with some change that was disrupting the flow. It is exceptionally easy to remove, clean, and reinstall. Just line up installation notches when reinstalling. Whirlpool should have mentioned this filter in the User & Care Guide, but I could not find it anywhere in there.

Posted on Mar 20, 2009

  • 59 Answers

SOURCE: Drain valve in Porter Cable air compressor

this valve works backwards, you screw it out to stop airflow. If that doesn't work, replace the valve.
David

Posted on May 25, 2009

  • 69 Answers

SOURCE: COMPRESSOR PUMPS UP TO 40-50 psi KEEPS RUNNING.

Most likely the pump is leaking somewhere, if the new hose is not leaking. Hoses don't just burst without showing signs or wear and tear, i.e. cracking and splitting. The pump was probably having problems, and this caused the hose to burst. Look for signs of leakage, and if you can't find them, the pump is shot.

Posted on May 27, 2009

  • 256 Answers

SOURCE: Drain valve on air compressor won't open or close

I would use an ajustable wrenck to try and open the valve. Being at the bottom and in the water, this is a common occurrence. to replace the valve, there is a Hex nut outer fitting (part of the valve) that you have to remove right by the valve "T" handle. Put a wrench on this and remove the complete valve. It too will be very hard to remove. When you install the new valve, use some anti-seize compound to make future removal easier.

Posted on May 31, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

WX-203 146S30, 32 Gal WELL-X-TROL Well Tank Stand low pressure upstairs


There is a schraeder valve at the top of the tank. Check the air pressure with a tire gauge. It should be two psi lower that the cut in pressure. eg: If you have a 40/60 pressure switch, the tank should read 38 psi.If it is lower, charge it up with air. If it loses the air again, the tank needs to be replaced. The gauge at the tank is rarely accurate so I would an outside sillcock pressure gauge to determine your system pressure so you can set the tank pressure properly. Good luck!

Apr 25, 2017 | Water Heaters

1 Answer

Repair help


If it has an automatic pressure regulator ( cuts out at set pressure) adjust the pressure higher. They are only meant to pump up tyres to a max set pressure probably at the 40 psi as most tyres only need 35 psi max.

May 31, 2013 | Air Tools & Compressors

2 Answers

At what torque should lug nuts be tightened


Instructions
    • 1 Check the maximum pressure rating of the air tank. The rated pressure is indicated in pounds per square inch (psi). If there is no indication of limit on the tank, do not use it.
    • 2 Drain any accumulated moisture from the compressed air tank before filling. If the tank has no drain valve, you may skip this step.
    • 3 Remove the cap from the fill valve. The valve is the same size and type as used on automobile tires. The location of the valve differs depending on manufacturer.
    • 4 Attach the fitting of the air supply hose to the valve stem of the air tank and depress the fitting firmly. If the air tank has its own pressure gauge installed, keep a close watch to avoid over-pressurizing. Wear safety glasses when filling the air tank.
    • 5 Stop filling the air tank periodically and check the tank pressure using an air pressure gauge if the tank does not have one installed. As the air pressure in the tank increases, check more frequently until the maximum amount is reached.
    • 6 Remove the air supply fitting and replace cap.

Jan 20, 2013 | Campbell Hausfeld 3/8" Ratchet

1 Answer

DeVilbiss air compressor will not build pressure


Does it have an intake air filter? Has the compressor been properly maintained? Oil less? It may have worn out rings and or valves

Aug 24, 2017 | Air Tools & Compressors

2 Answers

On my 1996 ss impala what low side pressure should I see on the a/c with the system running


It all depends on the outside (ambient) air temperature. Your A/C low pressure switch is designed to turn the compressor off at 24 Psi. and turn it back on at 45 Psi. Most systems will normally run at between 25 and 40 Psi when the system is running on HIGH blower and "MAX" or "RECIRCULATE". A system that is fully charged may run at 25 Psi when the ambient temperature is 75 Deg. (F) and may run at 40 Psi when the ambient temperature is at 90 Deg. (F). (it can be even higher if ambient temperatures are higher than 90 Degrees.)

To properly diagnose a malfunctioning A/C system, the HIGH side pressure must also be checked. Restrictions in the system can make the low side pressure look normal while the high side pressure is high enough to blow hoses apart. (400+ Psi.)

Sep 04, 2011 | 1996 Chevrolet Impala SS

1 Answer

Campbell hausfeild air pump 26 gallon runs for an hour and only produces 40 pounds of pressure what could be the problem


Head valves. Some units use simple metal strips (reed valves) while others are just a bit more complicated. Could be either a broken valve or a stuck valve. The other possibility would be a stuck one way check valve that goes into the tank and keeps the pressure from going back into the pump.

Jul 15, 2011 | Campbell Hausfeld Air Tools & Compressors

1 Answer

I have a flotec shallow well pump i can not get it to pump the water it stays at 20 pounds did i hook it up wromg


check your pressure tank. It sounds like it is water logged. This means there is no air pressure in it. If you're cut in pressure is set at 30 pounds you must have 30 psi of air pressure in the pressure tank.

Oct 01, 2010 | Flotec 3.4 Hp Floodmate Submersible Sump...

1 Answer

No more then 30 pounds of presure and wont shut off. Flotec water


If the pressure does not get pass 30 psi, then check for leaks along the pipelines and on the tank itself. An air leak on the top portion of the tank can cause the pressure not to trigger the pressure switch. Use soap bubbles to detect any air leak. Although a stuck pressure is not more likely the problem, check it also.

Aug 31, 2009 | Flotec 1/2 Hp Stainless Steel Waterfall...

1 Answer

Water pump cycles to often. When pump turns on, pressure gauge shoots up to 50 lbs right away without pumping much water.


Sounds like a well fed system with a pressure tank that has lost its air charge. Check for a water tank with a tire pressure type stem fitting, should also have a pressure gauge. Most newer tanks have a rubber diaphram inside to keep the air and water from mixing, but a lot of older ones don't and the newer ones will develope a leak that will produce the simpoms you describe. Try adding a few pounds of air pressure to the top of the tank and check for leaks. Warning: Compressed air can escape explosivly if the tank is badly rusted out but if your water pressure goes to 50# without the tank leaking, it should be safe to add up to 25# of air. The air charges the water system and allows the pump to shut off until enough water is used to lower the pressure back to set points on the control switch. It's not a good idea to adjust the set points on the switch unless all parts in the system have been checked for safety to the new pressures.

Aug 13, 2009 | Water Heaters

Not finding what you are looking for?
Air Tools & Compressors Logo

Related Topics:

44 people viewed this question

Ask a Question

Usually answered in minutes!

Top Air Tools & Compressors Experts

John Trevino

Level 3 Expert

1388 Answers

Joe Garcia
Joe Garcia

Level 2 Expert

205 Answers

Brad Brown

Level 3 Expert

15941 Answers

Are you an Air Tool and Compressor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...