• Cone-shaped grinding wheel • 1-1⁄4" hole saw or drill bit • Safety mask NOTE: All tools may not be necessary for installation. Read installation procedures before starting to determine what tools are necessary. 2 • RAIN GRO-475 Installation and Operation Manual...
(C) Disconnect cold water line from the bottom of main faucet. should be changed at least every 12 months to avoid (D) Install the water supply adapter into the cold water line. chlorine bypass. RAIN GRO-475 Installation and Operation Manual • 3...
4. Installing the Drain Clamp NOTE: If you have a single-basin sink with a disposal unit, call Technical Support for options. NOTE: Before installing the drain clamp, check the drainpipes under the sink 4 • RAIN GRO-475 Installation and Operation Manual...
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SHUT OFF VALVE TO TANK 7 1/2” FLOW RESTRICTOR MEMBRANE 15” (minimum) to oor INLET WATER TO DRAIN BACK VIEW TUBING CONNECTION DIAGRAM 1 1/2” (minimum) to oor CARBON SEDIMENT CARTRIDGE CARTRIDGE RAIN GRO-475 Installation and Operation Manual • 5...
Push Up from the tank, the system automatically starts the cycle of replacing the water and then stops water production when the tank is full. Closed Tank Valve Open Tank Valve Counter- clockwise 6 • RAIN GRO-475 Installation and Operation Manual...
Counter-clockwise Total Dissolved Solids (TDS) Test NOTE: It is highly recommended that you (the consumer) have your water tested at least every 12 months to verify that your system is performing satisfactorily. RAIN GRO-475 Installation and Operation Manual • 7...
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. 8 • RAIN GRO-475 Installation and Operation Manual...
Check to see if tube is in place by trying to gently pull tube out. 3/8" Faucet Permeate Tube 3/8" Drain Tube 1/4" Feed Tube 1/4" Faucet Drain Tube Carton (2nd Stage) Prefilter 1/4" Storage Sediment Elstage Prefilter Tank Permeate Tube RAIN GRO-475 Installation and Operation Manual • 9...
Check for leaks every hour. As pressure builds in tank, leaks may occur that did not exist directly after installation. When the RO element and cartridges have been changed, follow the system start-up procedure in Step 11: System Start-up. 10 • RAIN GRO-475 Installation and Operation Manual...
Call Technical Support. Reduced production Slow or no product water flow usually indicates either a clogged pre-filter or an exhausted membrane. First, replace the pre-filters. If the production rate is not improved, replace membrane. RAIN GRO-475 Installation and Operation Manual • 11...