Troubleshooting guide
Page 15
California Proposition 65 Warning
WARNING: this product contains chemicals known to the State of California to cause cancer and birth defects or other 
reproductive harm. (Installer: California law requires that this warning be given to the consumer). For more information: www.
wattsind.com/prop65.
Procedure for Extended Non-Use (More than 2 months)
Turn off the cold water supply to your RO system, unplug power transformer from electrical 
outlet and open the RO faucet to drain the storage tank. Once the storage tank is empty, 
remove the Reverse Osmosis Membrane, place it into a sealed plastic bag and store in your 
refrigerator (DO NOT FREEZE). 
To Restart System:
If you have connected your RO system to a refrigerator / ice maker, make sure the ice 
maker is off (do not allow water to ow to the ice maker) until the tank has been allowed 
to completely ll.
After the Tank has lled, open the RO Faucet to ush the tank completely. You will know that 
the tank is empty when the ow rate from the RO faucet is down to a trickle.  The second tank 
can be used for drinking. 
Open the RO faucet and leave it open until water begins to trickle out (it will come out slowly).
Step 5
Turn on the cold water supply to your RO system. Plug in the transformer,
(Check frequently over the next 24 hours to ensure no leaks are present).
Step 4
Step 3
Note:
Step 2
Close the RO faucet allowing the storage tank to ll with water.  It may take 3 hours to ll 
the tank completely depending on the production capability of the membrane, local water 
temperature and water pressure. 
Reinstall reverse osmosis membrane.Step 1
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.
Check Air Pressure in the Tank
Important: 
Step 3
Check air pressure only when tank is empty of water!
Step 1 
Turn off the cold water supply to the RO and unplug transformer.
Open the RO Faucet and allow water to drain from the tank until it is 
completely empty.
Step 2
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.
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. 
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