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9) Pure water still tastes like Tap water:
The first thing to check would be if the reverse osmosis membrane was installed. The membrane is the
heart of the RO unit and it is the component that removes most of the contaminants and impurities in the
water. If the membrane is installed, please make sure the first 1-2 tanks of water have been completely
flushed out. The new filters on your system needs to be flushed out before use.
If the tank has been flushed out, use the TDS meter to check the tap water vs. pure water TDS. RO units
will remove 90-95% of contaminants and impurities in the water. If the pure water is not at 90% or
higher, please contact an APEC technician for assistance.
10) Air Bubbles: Lots of Air bubbles in cup or bottle when filling
It is quite normal to see air bubbles in a cup of pure water. This mainly occurs when a RO unit is first
installed or when filters are being replaced. When new filters are installed to the unit, the filter housings
are dry. When they are attached onto the RO head, air pockets will fill the housing. As water is turned on
and flows through the unit, the air pockets move throughout the system. This can have an effect on the
appearance of air bubbles in the water.
RO units will self purge the air bubbles that can accumulate inside the unit. As you continue to draw wa-
ter, trapped air will be removed by the water flow and you should quickly see a reduction in the bubbles
inside the water cup. You can also drain 1-2 tanks of water to quickly purge the air bubbles.
* * * End Trouble-Shoot Guide * * *
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