SpectraPure
SpectraPure®Inc.
480.894.5437 Call us toll-free 1.800.685.2783
2167 East Fifth St, Tempe, Arizona 85281
®
8
1. Locate the yellow concentrate tubing. Remove the tubing from its push-fitting at the membrane as follows:
a.) Firmly depress and hold the push-fitting collar down with your thumbnail.
b.) While the push-fitting collar is depressed, pull the tubing straight out of the push-fitting. Once the tubing
is removed, release the collar.
2. Carefully remove the flow restrictor assembly, now visible as a 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
flow restrictor (consisting of the insert collar and thin capillary tubing) may then be gently extracted.
Note: Take care not to crush or otherwise damage the delicate capillary tubing
.
3. Refer to the Flow Restrictor Tables (page 8). Find the table that represents the Flow Restrictor Assembly for the system
that you have. Find the
product flow rate
in the left-hand column and the
length of the flow restrictor
in the
right-hand
column.
Example: If your Flow Restrictor Assembly is for a 90 GPD Membrane and the
product flow rate
is 170 mL/Min, then
the flow restrictor length should be cut to 6.5 inches (16.5 mm). 170 is about halfway between 164 (7 in.) and
175 (6 in.).
4. Using a new single-edge razor blade, carefully measure and then cut the flow restrictor to the
total length
indicated.
5. Re-insert the flow restrictor assembly into the yellow tubing and firmly re-seat the insert into the end of the yellow
tubing by carefully pressing on the insert with your thumbnail. Care should be taken not to crush or other-wise
damage the end of the capillary tubing protruding from the end of the insert.
6. Re-insert the yellow tubing into its push-fitting in the RO membrane as follows:
a.) Moisten the O-ring seal inside the concentrate outlet fitting by dripping a few drops of clean water into the fitting.
b.) Grasp the yellow tubing near the flow restrictor end, and insert the tubing into the push-fitting. Push the tubing
into the fitting until resistance is felt, approximately 1/2 inch (12.7 mm). The tubing is now resting on the O-ring
seal inside the fitting.
c.) Firmly push the tubing approximately an additional 1/4 inch (6.35 mm) further into the fitting to completely seat
the line into the fitting and O-ring seal.
7. Turn on the system water supply and check for leaks prior to further use or testing. If a leak is observed, you may not
have pushed the yellow tubing into the push-fitting far enough to seal the tubing against the O-ring. Turn off the
system water supply and re-seat the tubing as described above.
FLOW RESTRICTOR REMOVAL, ADJUSTMENT AND REPLACEMENT
