Change it, If it worked once upon a time, now it does not, You can't fix it. They come preset 20/40,30/50 or 40/60 the first number is the on psi the second is off. Check your old one to see which you need, it is on the inside of cap. Make sure to check the air in bladder tank while the system is down. (2 psi less than start up pressure)
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Change it, If it worked once upon a time, now it does not, You can't fix it. They come preset 20/40,30/50 or 40/60 the first number is the on psi the second is off. Check your old one to see which you need, it is on the inside of cap. Make sure to check the air in bladder tank while the system is down. (2 psi less than start up pressure)