Question: How Do I Replace The Pre-Filters On My RO System?

Answer:

Sediment and Carbon Pre-filters – Turn the valve off on self piercing valve (or other inlet source for the incoming water). Next, turn the ball valve off on the storage tank. Open the R.O. faucet at the kitchen sink (or wherever you installed it) to de-pressurize system. Unscrew filter housings by turning counter clock wise (for easy servicing, be certain to use your housing wrench) – NOTE – remove only one housing at a time so you do not mix the housings or type of filter. Remove the old (depleted) filter and discard. Clean the filter bowl with warm soapy water. Then rinse and add one table spoon of liquid household bleach and fill the housing with water. After letting it stand for 5 minutes, empty the housing and rinse well with tap water. Insert the replacement filter into the housing. Do not touch the filter. By using the wrapper to handle the new filter your hands will not induce bacteria that will grow and foul the water. Inspect the “O” rings and replace as necessary. Hand tighten and use a wrench only if the housing leaks. If you are replacing the post carbon filter and or the RO membrane, complete those replacements at this time. If you are only replacing the pre-filters, then turn the incoming water on and fill the storage tank. When the storage tank is full, turn the faucet on and drain the storage tank. This will remove the fines that may be in the water from the start up on the new carbon filters.