expansion tank

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Old 10-07-13, 06:40 PM
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expansion tank

I think my expansion tank has gone bad AGAIN! Its only about 3 years old. First one the bladder went and now I notice everytime I use water the pump kicks on. Checked the air and its only at like 10psi. I tried putting air in it as it needs like 40 psi but it wouldnt raise the pressure at all but I was using a small air pump. So how could I check it to see if the bladder is fine and could hard water be causing the tank to fail?
 
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Old 10-08-13, 06:17 AM
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Did you turn off the water and drain the pressure out of the system before trying to add air? I'm not sure that's really your problem, but I know it's suggested to have the system depressurized when you're adding/checking the air.

Is this a well pressure tank or a small one mounted near your water heater?
 
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Old 10-08-13, 12:28 PM
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Its a well pressure tank. I just drained it and added 38 psi.
 
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Old 10-08-13, 02:12 PM
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As long as it holds that charge for a while, you should be good.

For future reference http://www.doityourself.com/forum/we...ml#post1453545
This post tells you how to repressurize your tank. It mentions setting it for 27/28psi... but that sounds low to me. Someone who knows this better than me should be around shortly to confirm.
 
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Old 10-08-13, 03:53 PM
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Yup thats how I did it and it seems good for now. Thanx!!!
 
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Old 10-08-13, 03:57 PM
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check the psi once a yr. It will lose some pressure yearly. Low psi damages the bladder as well as short cycling the pump which will shorten its life...
 
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