SpectraPure®Inc.
480.894.5437 Call us toll-free 1.800.685.2783
215 South Industrial Drive, Suite 2A Tempe, Arizona 85281-2941
SpectraPure
®
Operating Instructions
1. Turn off system water supply.
2. Remove the yellow tubing from its gray push-fitting at the
encapsulated membrane as follows:
a.) With one hand, grasp the yellow tubing near the
membrane.
b.) With the thumbnail of your other hand, firmly depress
and hold the gray push-fitting down.
c.) While the gray push-fitting is depressed, pull the
yellow tubing straight out of the push-fitting. Once
the tubing is removed, release the gray push-fitting .
3. Carefully remove the flow restrictor assembly, now visible
as a translucent plastic insert in the end of the yellow
tubing. You may use an object such as a dull knife to help
pry the flow restrictor insert from the end of the tubing.
The entire length of flow restrictor (consisting of the insert
plug and thin capillary tubing attached) may then be
gently extracted.
Note: Take care not to crush or otherwise damage the
delicate capillary tubing.
4. To adjust the flow restrictor, the length of the capillary
tubing must be reduced. With a new single-edge razor
blade, carefully cut off approximately 1 inch (25.4 mm) of
capillary tubing from the flow restrictor assembly.
5. Re-insert the flow restrictor assembly into the yellow
tubing and firmly re-seat the restrictor plug into the end of
the yellow tubing by carefully pressing on the plug with
your thumbnail. Care should be taken not to crush or
otherwise damage the end of the capillary tubing
protruding from the end of the plug.
Flow Restrictor
Removal, Adjustment, and Replacement
Flow Restrictor Assembly
capillary tubing
translucent plastic
insert
yellow tubing
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SpectraPure®Inc.
Fax 480.894.6109 Fax us toll-free 1.877.527.7873
E-mail spectra@spectrapure.com Visit us on the web www.spectrapure.com
SpectraPure
®
Membrane Output Calculation
Membranes produce the rated gallons per day (GPD) at 60 psi
(4.1 bars) operating pressure, 77°F (25°C) operating temperature
and 500 ppm total dissolved solids.
Membrane output gallons per day (GPD) depends on operating
pressure, water temperature and the ppm TDS in the feed water.
Expected GPD = Rated GPD × PCF × TCF
PCF is the pressure correction factor
TCF is the temperature correction factor
Calculation of Pressure Correction Factor (PCF):The output
(GPD) from the membrane is directly proportional to the applied
pressure.
Note: The membrane is rated to produce the rated GPD at 60 psi.
For any pressure other than 60 psi the output GPD is multipled by
the PCF.
PCF = Line Pressure (in psi) ÷ 60
Calculation of Temperature Correction Factor (TCF): The output
(GPD) also decreases with decrease in temperature. This is because
water viscosity increases with
decrease in water temperature.
Water Production Rate
Temperature Correction Factor Table (TCF)
°F /°C TCF °F \°C TCF °F \°C TCF
41.0 /5 0.521 59.0 /15 0.730 77.0 /25 1.000
42.8 /6 0.540 60.8 /16 0.754 78.8 /26 1.031
44.6 /7 0.560 62.6 /17 0.779 80.6 /27 1.063
46.4 /8 0.578 64.4 /18 0.804 82.4 /28 1.094
48.2 /9 0.598 66.2 /19 0.830 84.2 /29 1.127
50.0 /10 0.620 68.0 /20 0.857 86.0 /30 1.161
51.8 /11 0.640 69.8 /21 0.884 87.8 /31 1.196
53.6 /12 0.661 71.6 /22 0.912 89.6 /32 1.232
55.4 /13 0.684 73.4 /23 0.941 91.4 /33 1.267
57.2 /14 0.707 75.2 /24 0.970 93.2 /34 1.304
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