Use and Care Manual

Installation Instructions
Residential Reverse Osmosis Drinking Water System
To change  lters and membranes follow these procedures:
1. Close feed water valve by turning it clockwise.
2. Open faucet to allow holding tank to drain.
3. Loosen and remove  lter housings using wrench
provided and discard cartridges and or membrane.
4. Wash the inside of the housings using mild
detergent and soft cloth. Thoroughly rinse all soap
before reassembly.
5. Replace  lter cartridges and membrane before
sanitizing system.
NOTE: The system should be sanitized before installing the
activated carbon post  lter cartridge.
Sanitizing instructions
To sanitize system follow these procedures with the
feed water valve closed:
1. Remove pre- lters and membrane from housings.
2. Use 5-1/4% unscented bleach such as Clorox.
3. Add one cap full (2 tsp or 10 ml) of bleach to each
pre- lter housing and membrane module.
4. Carefully re- ll housings with tap water and
temporarily replace WITHOUT carbon cartridge,
sediment cartridge or membrane installed.
5. Slowly open the feed water line at faucet.
6. Close faucet as soon as water begins to drip out of
spout.
7. Let system stand for approximately 15 minutes.
8. After  fteen minutes do the following in order:
• Close feed water valve.
• Close holding tank valve while faucet is open
to release pressure.
9. Remove housings and empty them.
10. Remove any protective wrap from pre- lters and
membrane and install them in the appropriate  lter
housings. Tighten with wrench.
11. Replace post carbon  lter if necessary.
NOTE: Be sure to check o-rings are in place when installing
cartridges in  lter housings.
12. Disconnect product water tubing from the holding
tank and put 50 drops of bleach into the tubing.
Reconnect tubing.
13. Slowly open feed water saddle valve. When water
begins to drip from faucet, close faucet and open
holding tank valve.
14. Do not open faucet for at least eight (8) hours.
15. Discard the  rst two tanks of water produced, as
they contain chlorine. Do not use this water.
16. When faucet is  rst opened, air and black carbon
powder may be noticed. This is normal.
Water quality
Water quality from an RO system is normally determined
with a TDS Meter, which measures total dissolved
solids in water, measuring conductivity. The results are
normally measured in parts per million or milligrams
per liter. Fewer dissolved solids results in higher quality
water.
RO membranes are rated by the amount of dissolved
solids they reject expressed as “rejection percentage”.
For example:
If feed water contains 100 ppm of dissolved solids and
the product water after the membrane has 10 ppm of
dissolved solids the rejection rate is 90%.
The formula is as follows:
Percent Rejection =
(Feed H
2
O TDS - Product H
2
O TDS) x 100%
Feed H
2
O TDS
Water production
PRODUCT WATER RATE
Usable water production from an RO system is
designated product water rate, produced on a daily
basis. The rate is normally described in gallons per day
(gpd) or milliliters per minute (ml/min).
REJECT WATER RATE
The  ow of water to drain is designated as reject water
rate, as measured in gallons per day (gpd) or milliliters
per minute (ml/min).
Using a graduated cylinder the formulas are:
Milliliters per minute x 0.38 = gallons per day
Ounces per minute x 11.2 = gallons per day
REJECT RATIO
The reject ratio is the amount of water produced
compared to the amount of water  owing to drain.
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