Pentek Water Dispenser - Manual (Page 3)

Undersink Installation
(3/8-inch cold water line)
Materials Required:
Teflon
® tape
Plastic tubing
(2) 3/8-inch compression fittings
(2) 3/8-inch compression elbows (with ferrules and tubing inserts)
(2) 3/8-inch to 3/4-inch NPT reducing adapters (for installation of 3/4-inch I/Os / filters)
NOTE:
• Reducing adapters can be used to adapt the filter to different pipe sizes. See your local
hardware store or plumbing store for help in selecting the necessary adapters and com-
pression fittings for your installation needs.
1. Turn off cold water supply and open nearest faucet to drain pipes before starting instal-
lation. Place a tray or towel under the cold water line to catch excess water. Wrap about
6 inches of Teflon
® tape in clockwise direction around pipe threads of each fitting /
adapter.
2. Attach the mounting bracket:
3/4-inch filters–see #2 under Whole House Installation
3/8-inch filters–using the self-tapping screws, attach mounting bracket to cap.
Mark location under sink where filter is to be mounted. Allow 1 1 /
2
inches under filter to
enable cartridge changes.
3. Assemble fittings/adapters. Start fitting/adapter into inlet of cap by hand, then tighten
with a wrench. DO NOT OVERTIGHTEN. About one thread should remain visible. Repeat
for outlet on filter cap.
4. Using a pipe cutter or hacksaw, remove a 3-inch section of pipe from the cold water line.
Deburr ends of remaining pipe with a file.
5. Determine the lengths of tubing needed to connect the inlet and outlet sides of the filter
to compression elbows on the cold water line. Measure tubing short enough to prevent
kinking. Using two wrenches, tighten compression nuts 1
1 /
2
- to 2-turns.
6. Turn on water supply to allow filter to slowly fill with water, then press the pressure-
relief button on the housing to release trapped air. Open faucet and flush filter with
water for 5-minutes. Check for leaks and tighten fittings as needed.
Cartridge Replacement
A. Turn off water supply to filter. Depress red pressure-relief button to relieve the pressure,
then twist off bottom of housing.
NOTE: If turning off water supply to filter will also turn off water supply to the rest of
the home, be sure to fill a bucket of water first to allow you to clean housing after it has
been removed.
B. Locate and remove large o-ring, wipe clean of lubricant, and set aside.
Discard used cartridge. Rinse out bottom of housing and fill about 1/3 full with water.
Add about 1 tablespoon of bleach and scrub cap and bottom of housing with nonabra-
sive sponge or cloth. Rinse thoroughly.
Lubricate o-ring with clean silicone grease. Clean groove and connection point on cap.
Insert o-ring back into groove and smooth into place with finger.
Insert new cartridge over standpipe in bottom of housing.
C. Screw bottom of housing onto the cap and hand-tighten. DO NOT OVER-TIGHTEN.
Make certain cap standpipe slips into cartridge.
Slowly turn on the water supply to allow filter to fill with water and then press the red
pressure-relief button on top of the filter to release trapped air. Open faucet and flush
filter with water for 5-minutes. Check for leaks before leaving installation.
1
4
5
6
3
2
IN
3”
cold water
line
nut
ferrule
elbow
OUT
3