MEM-45, MEM-90, MEM-ES-75, MEM-ES-50, MEM-ES-100 InstallationUpdated 3 months ago

For the membrane filter installation, the csutomer only needs to take it out of the packaging, but there is no need to remove the sticker/label on the actual filter before the installation. Below is the step by step instructions to install the membrane filter.

1) Turn OFF the cold water supply to the RO system. Turn OFF the tank ball valve. Turn on the RO faucet lever briefly to relieve the built-up pressure inside the RO system. This will make opening the housings easier. 

2) Locate the Membrane housing on the system (labeled “Membrane”). Remove the WHITE tubing from the housing’s cap at point D. To remove tubing, Push In and Hold Down on the collet ring square against the fitting. With the collet held in this position, the tube can be removed. Open up the cap (turn counter-clockwise). Using a plier, remove the used membrane for disposal. 

3) Once the membrane is removed, please tilt the RO system at an angle to drain out residual water from inside the membrane housing and insert the new membrane using a plier. Push the membrane into the housing. Avoid touching the Membrane with your hands to prevent contamination. 

4) Important! Make sure the “double-ring” end of the membrane goes into the housing first, as shown in

5) Close the housing cap. Reconnect the WHITE tubing to the cap. Turn on the cold water supply and tank valve. Let the RO system run to refill the tank (takes about 2-3 hours). 

6) Check for leaks! 

7) Drain the first tank of water (through the faucet) to flush out the new membrane! The 2nd tank of water is ready for use