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OPTIONAL INSTALLATION

Connecting your Reverse Osmosis System to Refrigerator Icemaker / Water Dispenser

CAUTION:

  If you are connecting this unit to your refrigerator/icemaker with initial RO installation, wait to turn on the icemaker until 

the post-polishing filter has been flushed according to Step 11.

CAUTION:

 Use plastic tubing and fittings. Do not use copper tubing or brass fittings. 

NOTE:

  For optimum performance, it is recommended that the distance between the RO system and the refrigerator icemaker/water 

dispenser be no greater than 10 feet (3 m). At distances greater than 10 feet, the water pressure from the system may not be 

adequate to deliver water to the refrigerator. 

MATERIALS REQUIRED

 (available from your local hardware store):

•  3/8-inch x 3/8-inch x 3/8-inch (0.952 cm x 0.952 cm x 0.952 cm) compression or quick-connect tee
• 10 feet (3 m) of 3/8-inch (0.952 cm) polyethylene tubing
• Shut-off valve

1. Turn off refrigerator water supply and icemaker (consult manufacturer’s guidelines).
2. Close tank valve (on top of storage tank).
3. Turn off water to RO system at the cold water supply, or at the feed water supply adapter.
4. Open drinking water faucet to relieve pressure.
5.  Locate tubing (permeate) leading to your drinking water faucet. Cut and insert the

3/8-inch x 3/8-inch x 3/8-inch compression or quick-connect tee into the permeate tubing.

Consult manufacturer’s guidelines before installing the supply adapter.

NOTE: 

When cutting the permeate tubing, you may experience some water leakage.

6.   Using a length of 3/8-inch polyethylene tubing, connect the

icemaker/dispenser line with the free port on the compression tee.

7.  The shut-off valve should be installed as close to this port of the tee

as possible. Shut-off valve should be installed in the OFF position

Consult manufacturer’s guidelines before installing the shut-off valve.

8. Completely open cold water supply.
9. Open tank valve.

 10. Turn off the drinking water faucet.
11. Turn on water to RO system at cold water supply.
12. Turn on icemaker and open shut-off valve.

Consult manufacturer’s instructions.

13. Check for leaks and tighten connections if necessary.

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RAIN

 GRO-

4

75

 Installation and Operation Manual

Summary of Contents for GRO-475

Page 1: ...www rainwaterlv com Rain Water Conditioning of Las Vegas RAIN GRO 475 4 STAGE REVERSE OSMOSIS WATER FILTRATION SYSTEM INSTALLATION AND OPERATION MANUAL 702 257 PURE 7873...

Page 2: ...ter PARTS INCLUDED SEE BACK OF MANUAL FOR DIAGRAM Pre assembled filter system mounting bracket encapsulated membrane element pre and post filter housings and pre and post filter cartridges Storage tan...

Page 3: ...hould be changed at least every 12 months to avoid chlorine bypass HOW REVERSE OSMOSIS WORKS The GRO 4550 Reverse Osmosis RO System uses a semi permeable membrane to reduce dissolved salts and mineral...

Page 4: ...ches if drill bit slips C Mark point with center punch Use a 1 4 inch drill bit to drill a pilot hole through sink D Use a 11 4 inch hole saw to enlarge hole Smooth rough edges with a file 3 Mounting...

Page 5: ...e tubing Do not kink tube Cut the tubing squarely below the nut and remove the internal and external burrs B Loosen the compression nut two complete turns Insert the tubing into the nut until it stops...

Page 6: ...to quick connect fitting on the left side of system Depending on the installation the system may need to be removed from the mounting surface to access the left side of the system C Cut the tube to a...

Page 7: ...ank is filled open the faucet to flush the post filter cartridge Allow 4 to 5 minutes for all of the water to drain from the tank Close faucet and allow tank to fill F Repeat step E four times NOTE In...

Page 8: ...2 Close tank valve on top of storage tank 3 Turn off water to RO system at the cold water supply or at the feed water supply adapter 4 Open drinking water faucet to relieve pressure 5 Locate tubing pe...

Page 9: ...sure to install cartridges in proper housings see diagram below 8 Screw bottoms of housings back onto caps securely do not over tighten Turn on cold water supply Check for leaks Continue to check peri...

Page 10: ...system to catch any water that spills during removal of the filter housings 2 Open drinking water faucet to drain tank When tank is drained close faucet 3 Disconnect the tubing connections from the G...

Page 11: ...e system is producing water by turning off the valve on the storage tank and opening the faucet Water should drip from faucet 1 Examine the pre filters If clogged replace see Replacing the Pre Filters...

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