Check Air Pressure In The Tank - Watts ZRO-PURE Installation, Operation And Maintenance Manual

Check Air Pressure in the Tank

Check air pressure only when tank is empty of water!
Important:
Check air pressure in the storage tank when you notice a decrease in available water from
the RO system. Air can be added with a bicycle pump using the schrader valve that is
located on the lower side of the tank behind a blue plastic cap.
Turn off the cold water supply to the RO and unplug transformer.
Step 1
Open the RO Faucet and allow water to drain from the tank until it is
Step 2
completely empty.
When water from the RO faucet slows to a trickle, with the
Tip:
faucet still in the open position, you may add air to the tank
to purge any left over water, this will ensure that the tank is
completely empty.
Step 3 Once all water in the tank is purged, check air pressure using an air pressure gauge, it
should read between 5 - 7 PSI. (Digital air pressure gauge is recommended) Pressurize
tank using a bicycle tire pump if low. Follow start-up procedure on page 11.
Page 14