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SpectraPure
SpectraPure®Inc.
480.894.5437 Call us toll-free 1.800.685.2783
2167 East Fifth St, Tempe, Arizona 85281
®
16
RO MEMBRANE REPLACEMENT
1. Turn off the water supply to the RO system. Place the system
where the membrane housing is easily accessible.
2. Remove the black tubing from the membrane feed push-fitting
by depressing the collar on the fitting with your thumb and pulling
the tubing from the push-fitting (Fig E).
3. Lift the membrane housing from the retention clips.
4. Unscrew the membrane housing lid. This may require two people.
5. Use a pair of pliers to grasp the membrane stem and pull the
membrane from the housing (Fig. F).
6.
Remove the black housing O-ring (Fig. F). Wash the empty housing
with soapy water. Rinse thoroughly with hot, clean water.
7. Insert new membrane into the housing, with the double
O-ring end first (Fig. G). The tube must fit into the recess at the
bottom of the membrane housing. When the membrane is aligned
with the hole, firmly push the membrane into the hole until it
bottoms out.
8. Place the black housing O-ring on the housing rim and carefully
screw the lid back on to the base.
9. Reconnect the black tubing to the membrane feed push-fitting.
Note: If you have a dual-membrane system, perform steps 2 thru 9 on
the second membrane now.
10. Disconnect the yellow concentrate tubing (Fig.C) from the
membrane housing and remove the flow restrictor (Fig. D) from the
yellow tubing (Refer to the procedure on page 11-12).
Fig. E: Membrane Housing
blue product
water tubing
black feed tubing
membrane feed
push-fitting
membrane housing lid
yellow concentrate tubing
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
9
SpectraPure
®
CHECKING THE CONCENTRATE TO PURIFIED 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
the pro-rated Membrane 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 Puri-
fied 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. Open the cold water supply valve and let the system run for 15 minutes. Direct
both tube down the drain.
2. Collect product water from the blue tubing into a measuring cup for one minute.
Measure the collected amount in milli-liters. Do the same with the waste water
from the yellow line.
WASTE (YELLOW) IN MILILITERS______________
DIVIDED BY
PRODUCT (BLUE) IN MILILITERS______________
The resultant is the Concentrate to Product Ratio
(Although not needed in this proceedure, the daily product flow rate in Gallons per Day
(GPD) can be calculated to be equal to the product flow rate times 0.38 ).
3.
If ratio is less than 4:1
Disconnect yellow drain line from the membrane housing and then remove flow restrictor.
Use the appropriate Flow Restrictor Chart to determine how long to cut the flow restrictor
in order to obtain a 4:1 ratio. ( Figure B)
* Please refer to pages 11-12 for Flow Restrictor Removal, Adjustment, and Replacement. *
4. If ratio is greater than 6:1, flow restrictor requires replacement (Please contact
SpectraPure Inc).
5. Turn on feed supply.
6. Check for Leaks.
7. This completes the procedure.
NOTE: WHEN TESTING AND ADJUSTING THE RATIO THE WATER PRESSURE
SHOULD BE BETWEEN 40-80 PSI.