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Understanding the Booster Pump and RO Process
1) Source water enters the system and passes through the stage 1, 2, and 3 pre-filters. Located
between the pre-filters is the Low Pressure Switch. This switch turns on when the
incoming water pressure is 7 PSI or greater.
2) The High Pressure Switchturns on when the pressure from the pressurized tank is below
20 PSI, and turns off at 35 PSI (e.g. when tank is full).
3) When the Low Pressure Switch and
High Pressure Switch are both on,
the Feed Water Solenoid Valve
opens, allowing water to the Booster
Pump.
4) The source water passes through the
Booster Pump, bringing it up to
approximately 80 PSI entering the
membrane housing.
5) Coming out of the RO membrane is
a pure water port and waste water
port. The RO water is forced through
the .0001 micron sized holes of the
RO membrane, and exits through the
one way Check Valve on the
membrane’s pure water exit port.
The water rejected by the RO
membrane exits through the waste
water exit port.
6) The pure water is then routed to the
pressurized storage tank. As the
storage tank fills, the tank pressure
rises. When the pressurized storage
tank reaches 35 PSI, the tank
pressure triggers the High Pressure
Switch off, shutting the booster
pump and system off.
7) When you open the RO faucet, the water exits the tank, passes through the FT15 post
carbon filter, and is dispensed from the RO faucet. As the RO water is dispensed, the tank
pressure will gradually drop back down, triggering the High Pressure Switch back on to
refill the water removed from the tank.
Page 5 www.123filter.com | (678) 261-7611 | [email protected]
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