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INSTALLATION CONTINUED . . .
8. Connecting the Storage Tank to the System
When tank is full, it weighs approximately 28.5 lbs. (12.9 kg) Provide
CAUTION:
ample support under the tank.
(A) To prevent leaks, apply 3 or more wraps of plumber tape to threads on tank.
Thread the tank valve onto the top of the tank opening. Turn tank so handle is
in line with tubing.
The tank/valve connection will leak if not properly sealed. plumber tape
CAUTION:
will normally seal the threaded connection.
(B) Locate the 1/4" tubing. Place a mark on the tubing 5/8" from each end.
Moisten one end of the tubing with water and insert with a twisting motion into
the port of the tank valve until the 5/8" mark is flush with the quick connect
fitting. Then locate the tank near the system's installation area.
(C) Cut the tubing to correct length. Install free end of tubing into white quick-
connect fitting on the post filter tee on the right side. Do not cut tubing.
(D) Place entire system over mounting screws on wall and slide down.
Make certain system is firmly attached to wall to prevent it from falling
CAUTION:
and possibly becoming damaged.
NOTE: Use caution not to bend or pinch the tubing behind the system while
attaching to mounting screws.
9. Connecting the Supply Adapter and Inlet Filter
(A) Locate remaining length of 1/4" plastic tubing.
(B) Push into quick connect fitting on the right side of system.
(C) Cut the tube to a length that will allow connection to the cold water supply
fitting. Ensure the tubing does not kink. Push the tube into the fitting.
10. Installing the Membrane
(A) Remove tube attached to membrane housing by pressing in the white collar
around the fitting while pulling the tubing with your other hand.
(B) Hold the membrane housing with one hand and turn the cap (wrench
provided) with other hand to remove. To make it easier to hold the membrane
housing, you may want to remove the post-filter.
(C) With clean hands (sanitary gloves preferred), remove the membrane from the
plastic bag. HANDLE WITH CARE.
Do not unwrap the tape around the membrane, as it is part of the
CAUTION:
membrane. Do not squeeze membrane.
(D) With the double O-ring side first, push membrane into housing until it stops.
About 1/8" of the membrane's plastic core will stick out beyond the housing.
(E) Use clean silicone grease (pack is included with the system) to lubricate both
O-rings and the brine seal. Hand-tighten membrane housing cap until you feel
resistance, then tighten an additional 1/2 turn. Do not over-tighten.
(F) Reinsert the tube by pushing it into the quick connect fitting.
8
1/4" Tube
Apply
plumber
5/8"
B
Port Reference
C
9
1/4"
Tube
Port Reference
B
10
Port Reference
A
PENTAIR RO-2550 Installation and Operating Instructions • 7
A
tape
A
5/8"
16mm
5/8"
16mm
C
E
D
A
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