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C.
Changing the In–Line Activated Carbon Post Filter
Close the Feed Water Saddle Valve by turning fully clockwise.
1.
2.
Close the Holding Tank Valve and then open the Dispensing Faucet to release the pressure.
Remove the In–Line Activated Carbon Post Filter. Disconnect the used Post Filter by pressing in the connector's
3.
collar and at the same time pulling the tube out of the fitting. Firmly reconnect the polytubes to the new Post Filter.
(Refer to Fig. 5 above.)
5.
Slowly open the Feed Water Saddle Valve.
6.
When water begins dripping out of the Faucet, in the following order, close the Faucet and open the Holding
Tank Valve. When the Faucet is first opened, expect air and carbon fines (very fine black powder), from the new
Post Filter to be rinsed out. This is normal for the first tank of water.
T
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eChnICal
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A.
Water Quality
Water quality is normally measured with a special meter that measures the water's ability to conduct electricity. The
more dissolved solids in the water, the higher the conductivity. The results are usually reported in Parts per Million
(ppm) or Milligrams per Liter (mg/l) of Total Dissolved Solids (TDS). (Although technically they are not exactly equal,
in most discussions ppm = mg/l.)
R.O. Membranes are rated by the amount of dissolved solids that are rejected. This rating is a ratio of the TDS in the
feed water to the TDS in the product water and is reported as Percent Rejection. If the feed water contained 100 ppm
of TDS and the product water contained 10 ppm of TDS, 90 ppm have been rejected and the reject
ratio is 90%.
Percent Rejection =
Feed TDS–Product TDS x 100%
Feed TDS
EXAMPLE: Feed water is 500 ppm TDS and the
product water is 75 ppm TDS.
Percent Rejection = 500 – 75 x 100%
Percent Rejection = 0.85 x 100% or 85%
B.
Water Quantity
Water quantity is termed Flux or Product Water Rate and is measured as the amount of water produced in one day. It
is reported as Gallons per Day (gpd) or Liters per Day (lpd). The flow of water to drain is the Reject Water Rate and
is measured as Gallons per Day (gpd) or as Milliliters per Minute (ml/min). Milliliters per minute x 0.38 = gallons per
day
EXAMPLE: The drain flow will fill a graduated cylinder to the 150 ml mark in one minute.
150 ml/min. x 0.38 = 57 gpd
If the container available measures ounces, use the following conversion:
Ounces per minute x 11.2 = gallons per day
EXAMPLE: The product flow will fill 2½ ounces in two minutes.
All manuals and user guides at all-guides.com
In-Line Activated Carbon Post Filter Assembly
500
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