Use and Care Manual

Page 16 www.123filter.com | [phone] | [e-mail]
● Get a bucket under the tank and remove tank by disconnecting the ball valve.
● Dump the water from the tank by turning it upside down (through the top stem). You may add
air from the front valve to help emptying the water.
● Use a gauge at the front air valve to check tank pressure. It should be within 7-10 PSI. If
pressure is too low, you can use a bicycle pump to add more pressure to the tank.
● Re-connect tank to the system and turn on the water supply.
Continuous drain
All RO systems create drain water. The drain water should run only when the system is making water.
The ratio of drain water to RO water is about 0.8-3:1 for our RO systems (Pumped, Side-Flow systems
have lower ratio). For a regular residential household, the waste water per day is about 3 more flushes
of a toilet, which is not too bad. The drain should stop after the tank is full. Allow 3 hours for the tank
to fill up. If the drain is still running, the problem might be caused by the following reasons:
● Faulty automatic shut-off valve (ASV, the white square valve that connects to the 4 tubings),
● Faulty check valve (at the pure water outlet of the membrane housing),
● Faulty flow restrictor (the small tube that marks "flow 300" and connects to the drain line).
● Low tank pressure.
High TDS level in RO water
The RO system should produce a TDS rejection rate of about 85-95%. Check the following first:
● What is the TDS reading of the tap water? Is there a sudden increase in tap water TDS level?
● Has the RO membrane been installed? It is packed in a plastic bag and in blue color, located in
the accessory box.
● Possibility of reverse drain line and pure water line. Compare your tubing connection to the
diagram in the manual.
Tastes and Odors in RO Water
Possible Cause
Solution
Carbon Post Filter is exhausted.
Replace Filter.
There is foreign matter in the Holding
Tank.
Clean, flush and sanitize the Holding Tank.
Replace filters.
Product water and Drain water lines are
reversed.
Correct the plumbing.
Dissolved gases in feed water.
Pre-treat feed water to remove gasses.
Increase in Product Water TDS.
See High TDS in Product Water Section