Checking Air Pressure In The Tank; Procedure For Extended Non-Use - Watts Premier WP-4V Installation, Operation And Maintenance Manual

Reverse osmosis (ro) water treatment system
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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 the blue plastic twist off cap.
Turn off the incoming water supply to the RO by turning the needle
Step 1
valve on the adapt-a-valve clockwise until it stops. (Follow the green
tube away from the RO system to find the adapt-a-valve.)
Open the RO Faucet and allow water to drain from the tank until it is
Step 2
completely empty.
Tip:
When water from the RO faucet slows to a trickle, with the 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.
Once all water in the tank is purged, check air pressure using an air pressure gauge, it
Step 3
should read between 5 - 7 PSI. (Digital air pressure gauge is recommended)
Procedure for Extended Non-Use (More than 2 months)
Turn off the water supply by turning the "T" on the adapt-a-valve clockwise until it stops and
open the RO faucet to empty the storage tank (Save a few ounces of RO water). Once the
storage tank is empty, remove the membrane and place it in a sealed plastic bag with the RO
water saved earlier and store in your refrigerator.
For restart, reinstall membrane and follow startup procedure on page 11.
Page 15

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