In this page you will find:

Changing The Filter Cartridges

Your RO module is equipped with valve heads which will automatically turn off the water supply to each filter when the filter is released, thus you do not need to turn off the incoming water supply at the AdaptaValve. The RO faucet must be off when filters are replaced. To make the removal of the filter cartridges easier, the heads & cartridges may be swiveled up to 90 degrees as shown in the pictures below.

At the 6 Month System Maintenance

One sediment filter (Red Label P/N: 105311)
One carbon pre-filter (Yellow Label P/N: 105351)

At the Annual Maintenance (Sanitization also recommended)

One sediment filter (Red Label P/N: 105311
One carbon pre-filter (Yellow Label P/N: 105351
One carbon post-filter (Blue Label P/N: 105341) OR VOC POST FILTER @ RO Pure Plus (Silver Label P/N: 105381)

Tip: This is a good time to check the air pressure in your storage tank. 

Note: Flush first tank full after completing the annual maintenance. 

Step 1: 
Place a towel under the RO module to catch any excess water that may drip out from the filters during the changeover.



Step 2
To remove a filter cartridge: Push & hold the button on the valve head above the filter. Pull cartridge downward (from the head) to remove. Release button and discard old filter



Step 3:
To install a filter cartridge: Remove the seal cap and insert the cartridge into the valve head until you hear an audible “click” (the button does not need to be pressed to install new filters).

Note: To reset the electronic monitor during replacement of filters, simply slide out the battery from the base of the faucet and reinsert.

This reverse osmosis system contains a replaceable component (the RO membrane) which is critical to the efficiency of the system. Replacement of this reverse osmosis membrane should be with one of identical specifications as defined by Watts Premier to assure the same efficiency and contaminant reduction performance

Membrane Replacement (2 - 5 Years)

Replace: One Membrane (Green Label P/N: 105331)

Membranes have a life expectancy between 2 and 5 years, depending on the incoming water conditions and the amount the RO system is used. This reverse osmosis membrane is critical for effective reduction of total dissolved solids (TDS). The product water should be tested periodically to verify that the system is performing satisfactorily.

Normally, a membrane would be replaced during a semiannual or annual filter change. However, if at any time you notice a reduction in water production or an unpleasant taste in the reverse osmosis water, it could be time to replace the membrane. Watts Premier recommends replacing the membrane when TDS reduction falls below 75%.

A water sample may be sent to Watts Premier for a free diagnosis of your membranes performance. To send a water sample, use 2 clean containers and fill 1/2 cup of tap water in one container and 1/2 cup of RO  water in 2nd container. Clearly label each sample. Send the samples to the address listed on the cover of this manual attention “Water Samples”. Watts Premier will test the water and mail or call you with the results. You can also test the TDS with a Handheld Pocket Meter.

Annual Sanitization

Note: Sanitization procedure must be performed before a filter change.

Step 1:
Turn off the water supply to your RO system at the adapt-a-valve and open the RO faucet to drain the storage tank.


Step 2:
Disconnect the blue tube from the ball valve on the storage tank (see page 7 for quick connect fitting use instructions).


Step 3:
Using a clean eye dropper insert ½ teaspoon of hydrogen peroxide or common household bleach into the blue tube. This will flow into the tank once water is turned back on to unit. Reattach blue tube to the ball valve. Follow startup procedure and drain two full tanks of water. Replace carbon Post-filter.

Check The Air Pressure in Your Tank:

Step 1:
Shut off the incoming water to the RO unit at the Adapt-a-Valve

Step 2:
Turn on (open) your RO faucet and leave in the Open Position.


Step 3:
Locate valve on tank (usually just below label there is a blue cap sticking out, remove cap) - attach a bicycle pump to the valve and start pumping - as you are pumping air into the tank you will see the water begin to flow out of the faucet. Keep pumping until no more water comes out the faucet (DO NOT TO OVER FILL THE TANK WITH AIR)

Step 4:
Once all the water is out of the tank (shake the tank to make sure), you will need to check how much air you've pumped into the tank using a Digital Tire Gauge. You will need to set the air pressure to 5 to 7 psi

Step 5:
Once pressure is set; close faucet & turn the water supply back on. Allow 4 - 8 hours for tank to refill.

Note: If you are hooked to your ice maker or refrigerator you will want to make sure you have the water to those units turned off in order to get the tank to pressurize and fill.