SpectraPure
SpectraPure®Inc.
480.894.5437 Call us toll-free 1.800.685.2783
2167 East Fifth St, Tempe, Arizona 85281
®
6
MEASURING WASTE TO PRODUCT WATER RATIO.
This procedure will assure you of maximum life and reliability of your SpectraPure
System.
Failure to perform this procedure can permanently damage the
membrane and will void Warranty.
In order to maximize the life of your SpectraPure RO Membrane, you may need to
adjust the ratio of the concentrate to purified water. If not enough concentrate is
allowed to flow past the membrane during operation, the impurities will
precipitate out on the membrane surface, clogging the RO Membrane. To keep
this from happening, the Concentrate to Purified Water Ratio must be checked
and adjusted in order to compensate for pressure and temperature variations that
exist in all water supplies. The flow rate of the concentrate must be a minimum of
4X the product flow rate. (4X to 6X is an acceptable concentrate flow rate.)
Procedure:
1. Collect product water (blue tubing) into a measuring cup for one minute.
(Measure the collected amount in milli-liters). Do the same with the waste
water
(yellow
tubing):
WASTE (YELLOW) IN MILLILITERS______________
DIVIDED BY
PRODUCT (BLUE) IN MILLILITERS______________
The resultant is the Concentrate to Product Ratio
(Although not needed in this procedure, the daily product flow rate in Gallons per
Day (GPD) can be calculated to be equal to the product flow rate times 0.38 ).
2.
If ratio is less than 4/1:
Disconnect yellow drain line from the membrane housing and remove
flow restrictor. Use the appropriate Waste to Product ratio chart (Fig A)
to determine how long to cut the flow restrictor in order to obtain a 4:1
ratio.
EXAMPLE: If you have a 100 GPD unit (FR-90), and your product flow is
175 ml/.min, than the flow restrictor needs to be cut to a total length
of 6 inches (15.2 cm)
.
3.
If ratio is greater than 6:1
, flow restrictor requires replacement
(Please contact SpectraPure Inc).
This completes the procedure
.
