background image

for corrosion. Corroded pipes should be replaced before continuing with 

installation.

(A)

 Attach the drain clamp to a vertical section of the drainpipe, about 6 inches

above the trap. Make sure the opening on the drain clamp is facing towards the

drinking water faucet (see diagram on previous page).

(B)

 Using the fitting hole of the drain clamp as a guide, drill a 1/4-inch hole

through one side of the drainpipe.

(C)

 Remove the drain clamp from the drainpipe and enlarge the hole with a

3/8-inch drill bit. Use a file to remove rough edges from the drilled hole.

(D)

 Make sure the black rubber gasket is adhered to the inside of the drain clamp

and place the drain clamp assembly over the drilled hole. Look through the

hole and position the clamp so that the center of the clamp hole is slightly

higher (about 1/16-inch) than the center of the drilled hole. Tighten the clamp

securely.

(E)

Screw the plastic compression nut onto the drain clamp until hand-tight.

5. Connecting the Faucet to the Drain

CAUTION:

  This is a gravity drain line. Any loops, kinks or sharp bends must be 

eliminated before proceeding. Failure to create a straight line to the 

drain may result in reject water leaking through the air gap in the faucet 

onto the countertop and below the faucet.

(A)

  Align the larger reject (3/8-inch) tubing from the faucet with the compression

nut on the drain clamp. Create as straight and smooth a path as possible with

the 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. Tighten with fingers, then tighten 1 to 2 turns with a wrench.

6. Installation of Mounting Screws

(A)

  If system is being installed under the kitchen sink, locate it on back or right

wall. Make sure to allow ample space for installation. To change the filter

cartridges, a minimum of 1-1⁄2 inches of clearance is required underneath the

filter housings. A minimum of 2 inches of clearance from the left side of the

unit is also required or 5 inches from the left bracket mounting screw hole.

(B)

 Install mounting screws at least 15 inches from cabinet floor and 7

1

2

-inches

apart. Leave a 5/16-inch space between the head of the screw and the wall to

slip bracket onto screws.

NOTE:

  Each connection fitting on the RO Assembly has a plug that must be

removed before inserting tubing. Push in on the collar and pull the plug 

out.

7. Connecting the Faucet to the System

(A)

 The faucet tube from the bottom of the threaded metal tube is inserted into the

post filter. The fitting is at the top right of the RO System. Push the free end of

the tubing into the quick connect fitting.

4

A

B

C

6"

D

E

5

A

B

3/8" Tube

15”

(minimum)

to floor

1 1/2” (minimum) to floor

7 1/2”

6

7

BACK VIEW

TUBING CONNECTION DIAGRAM

SCREW HEADS THIS SIDE UP

TO FAUCET

TO DRAIN

TO TANK

INLET WATER

CARTRIDGE

CARBON

NOTE:

CARTRIDGE

SEDIMENT

MEMBRANE

RO

RESTRICTOR

FLOW

VALVE

CHECK

FILTER

POST

AUTO

SHUT OFF

VALVE

RAIN

 GRO-

4

75

 Installation and Operation Manual • 5

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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