4
About the system
Reverse Osmosis process is a separation process. Tap water enters the system, and it is separated at the 4
th
stage
membrane filter. One side would go to the storage tank (purified water); the other side carrying all the minerals is purged
to the drain. The ratio of purified water to drain water is 1:3. That means for every gallon of water you use, it will drain 3
to 4 gallons. The drain is required for the RO process to work. If the drain is intentionally shut off, all the minerals will
be accumulated inside the membrane, and it would permanently damaged the membrane filter.
All Reverse Osmosis units require purging of water when it’s producing water.
Production rate: The system uses a 75 GPD (gallons per day) RO membrane. The actual production rate will depend on
water input pressure, temperature, and water chemistry. At optimal condition the membrane will make 85 GPD, but on
average, it would make about 45 to 60 gallons per day, or about 2 to 3 gallons per hour.
Drain rate: The drain rate of the system is set at 600 mL/min. using a flow restrictor. This drain rate is constant,
independent of input pressure. If the input water supply is very hard (> 17 grains) or the TDS reading is above 700 ppm,
it would be advantageous to change the membrane to 50GPD, in order to get better rejection and prolong the life of the
membrane filter.
ASSEMBLY QUICK VIEW
Carbon Carbon Sediment
1. Remove plastic wrap on the filters
2. Insert the filters as shown above.
1. Put upper portion of the unit on top of the filter housing
2. Screw on filter housing vertically to the filter housing cap by hand
3. Then use filter housing wrench to tighten the each housing
INSTALLATION QUICK VIEW
4 connections
Color of tubing
A
Feed water valve
Red or orange
B
Dispensing Faucet
Blue
C
Drain saddle valve
Black
D
Tank ball valve
Yellow
