Question about Utilitech 20-Gallon Vertical Pressure Tank LPT-20
Should the tank air pressure be set before or after the water is in tank?
Normally you set the air first.... but it can be done either way, just be sure that you have about 1/4 of your tank an air cushion, this stops the pump from cycling on and off to fast
Posted on Apr 28, 2013
Bladder style pressure tank air pressure should always be set with no pressure on the water side. Best way to check the air pressure on an installed tank is to electrically turn off the pump, open a low lying nearby faucet to bleed off the water pressure, then check the air pressure.. Leave the faucet open when adding air, so the bladder can displace any water remaining in the tank. Set the air pressure @ 2 PSIG less than what the pressure switch is set at to turn the pump on. As a side note, before I start, I always push down on the tank air valve while the whole system is pressurized. If water comes out the air valve, the bladder is ruptured and a new tank is required. I also turn off the electricity to the water heater so as to not burn out an element, in case the top heater element becomes uncovered with water while I'm draining the pressure tank. Leave the faucet open when you restart the pump so no air is trapped under the water side of the bladder.Finally, check that there is a 20 PSIG difference between pump cut-on and cut-off pressure, or the tank will not last. Remember that the larger the tank the better, because the pump and pressure switch life are rated in number of starts.
Posted on Sep 04, 2015
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Posted on Jan 02, 2017
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