Tools required: Bike pump and digital tire gauge
1. First make sure you turn off your cold water supply.
2. Next you’re going to drain your tank (you never want to check your tanks pressure with water in it)
3. Locate the blue cap towards the bottom of your tank. To remove, simply screw off.
4. Next, using your digital tire gauge, check the pressure of your tank. Your pressure should be at 5-7 psi using this range you can figure out if you need to add or remove pressure.
5. If you have above 7 psi you will need to let out pressure, using the end of a pencil or pen press on the shrader valve until your digital tire gauge reads between 5-7 psi.
6. If you have below 5 psi you will need to add pressure using a bicycle pump. Attach the pump to the shrader valve and pump air into your tank until your gauge reads between 5-7 psi.