Although each model is different, there are some steps that can be applied to all RO units.
You should read the manual before you begin. Most likely, it contains detailed instructions detailing the procedure for replacing your filter.
- Wash your hands first – you don’t want to infect your new filters.
- Turn off the water supply.
- Close the storage tank valve
- To depressurize the RO system, open the RO faucet and drain any water. After the dripping stops stop, close the faucet.
- Put a bowl under the system.
- Turn clockwise to remove the pre-filter housing. This may require a strap wrench or filter wrench. A towel is a good idea to keep handy in case of water spillage. To place the filters, a bucket is handy.
- If necessary, wash the interior of the housings with warm water. Unscented household bleach or another suitable sanitizer can be used to clean your system. After rinsing, rinse thoroughly.
- Install the pre-filter(s). Make sure all O-rings (black rubber) are in good condition and in place before you screw the housings back on. If necessary, replace them and/or lubricate them with silicone grease. You can tighten the housings with a wrench, but not too tightly!
- Push in the collet and pull the tubing out. Continue with the other end. Install replacement cartridge by removing the cartridge (check the arrow to see flow direction). Simply push the tubing into each fitting to reconnect the filter. To ensure a secure connection, pull back on the tubing.
- Restart the water supply.
- Turn on the RO tank valve.
- Let the system flush for about a minute by opening the filter water dispenser.
- Look for any leaks.
- Let the tank fill up by closing the faucet
- You should dispose of 1 to 2 full tanks of water after you have changed the filter. At first, discolored water might come out of your faucet. It is not something to be concerned about. This is just carbon fines being flushed and should disappear after the second flush.
As a guide, note the date of the last filter replacement. If your RO faucet has a filter change indicator, make sure to change the battery.
This post was written by a water treatment expert at Paragon Water Systems. At Paragon Water Systems we are the Manufacturers of the best Carbon Block Filter! We know that the best product comes from the best materials. We manufacture home water solutions such as reverse osmosis systems, under sink water filtration systems, showerhead filtration systems, carbon cartridges, and a wide variety of other products. Our focus is to provide Americans with safe and clean water throughout the home.