Rainfresh RO450 User Manual (English)

Other manuals for Rainfresh RO450

Installation & Maintenance Manual8 pages

Questions and Answers:

K
Kelsey ThompsonAug 19, 2025
What to do if water doesn't come out of my Rainfresh Water Filtration System faucet?
- E
  Emily ConradAug 20, 2025
  If water is not coming out of your Rainfresh Water Filtration System faucet, here are a few things to check: * First, make sure the feed water saddle valve is open. * Second, the pre-filter may be clogged and needs replacing. * Third, the RO membrane might be clogged and needs replacing. * Fourth, remove the shrink wrap from the pre-filter cartridges. * Finally, the shut-off valve may be defective. Contact Envirogard to replace it.
H
heatherdavisAug 22, 2025
How to fix a leak at the head seal of my Rainfresh RO450 Water System?
- J
  Jim TateAug 22, 2025
  If you notice a leak at the head seal, it could be due to: 1. A cracked or dry head seal due to age. Replace the head seal 2502. 2. A dirty head seal or groove. Wipe the seal and seat with a paper towel. Thinly lubricate using food grade silicone (Dow 111) or any other non-petroleum lubricant and re-install. If this doesn’t work, replace the head seal.
P
pscottAug 23, 2025
Why is my Rainfresh RO450 Water System leaking at the vent button?
- R
  Ronnie Woods MDAug 25, 2025
  If your Rainfresh Water System is leaking at the vent button, it's likely that the vent O-ring is dry or dirty. The vent O-ring may not be seating properly. Press the vent button several times to re-seat it properly. If it continues to leak, replace the assembly (2505).
J
Jasmine GrimesAug 26, 2025
Why does my Rainfresh Water Filtration Systems faucet make a gurgling noise?
- K
  Kristy HaynesAug 27, 2025
  The gurgling noise from your Rainfresh Water Filtration Systems faucet is normal. It is caused by drain water running from the unit while the RO system is filling the storage tank.
H
Hector GonzalezAug 28, 2025
What to do if water doesn't come out of my Rainfresh RO450 Water System faucet?
- J
  John FletcherAug 28, 2025
  If water isn't coming out of your Rainfresh Water System faucet, here's what you can check: 1. Ensure the feed water saddle valve is open. 2. The pre-filter might be clogged; replace it if needed. 3. The RO membrane could be plugged, requiring replacement. 4. The shut-off valve might be defective. In this case, contact Envirogard to replace the shut-off valve.
M
martinronnieAug 30, 2025
Why does my Rainfresh RO450 Water System only dispense water in a trickle?
- B
  Bobby KellyAug 30, 2025
  If your Rainfresh Water System is dispensing water in a trickle, here are some possible causes and solutions: 1. Refer to the solutions for 'Water does not come out from the faucet'. 2. The tank valve might be closed. Open the tank valve. 3. The tank may have low air pressure. If the empty tank pressure is below 5 psi, re-pressurize the tank using a bicycle pump, but only after draining the tank completely. Ensure you do not exceed the initial factory pre-set pressure. 4. The tank might be empty. Wait about an hour to allow the tank to fill.
T
Timothy DiazSep 1, 2025
Why does my Rainfresh RO450 Water System water run continuously down the drain?
- K
  katherinejosephSep 1, 2025
  If water runs continuously down the drain and doesn't stop when the storage tank is full, it could be due to: 1. Low supply water pressure. Increase the supply water pressure or install an RO booster pump. 2. High feed water TDS. 3. A defective shut-off valve.
N
Nancy GuzmanSep 3, 2025
Why does the air pressure in my Rainfresh RO450 Water System tank keep reducing after I fill it?
- D
  David MooreSep 3, 2025
  If the air pressure in your pressure tank reduces after you fill it, the storage tank may be defective and needs replacement.
W
William MullenSep 6, 2025
Why does the water from my Rainfresh RO450 have a sour taste?
- A
  Alex VaughnSep 6, 2025
  If the water from your Rainfresh Water System has a sour taste, your post filter may have exhausted its life. Replace the post filter.
S
Stephanie WoodSep 7, 2025
What to do if water doesn't go to the drain in my Rainfresh RO450 Water System?
- T
  Tiffany BartlettSep 8, 2025
  If water isn't going to the drain in your Rainfresh Water System, check the following: 1. The grey drain tube may be kinked or blocked. Remove the kink, and if the tube is damaged, replace it. 2. The drain restrictor (DR) may be clogged with dirt. Blow some air into the drain restrictor in the reverse direction. If you feel air at the other end, re-install it. If it remains blocked, replace it.

Rainfresh RO450 Specifications

General

Type	Reverse Osmosis
Stages	4
Storage Tank Capacity	3.2 gallons
Installation	Under Sink
Membrane	Thin Film Composite
Production Rate	50 GPD
Filter Life	6-12 months (pre-filters), 2-3 years (membrane)
Gallons Per Day	50

Summary

Introduction

Water Pressure Requirements

Ensure water pressure does not exceed 100 psi; use regulator if needed.

Freezing Temperature Precautions

Protect unit from freezing; drain if not in use during winter.

Water Temperature and Type

Use only cold water; do not install on hot water lines.

Cartridge Compatibility

Only Rainfresh replacement cartridges are compatible with the system.

Lubrication Guidelines

Use only food-grade silicone lubricant on O-rings.

Cleaning Instructions

Clean unit with warm soapy water only; avoid cleaning sprays.

Pre-Filter Operation Requirement

Never operate the system without pre-filters installed to prevent membrane damage.

Tubing Installation Check

Ensure tubing has no kinks to avoid restricting water flow.

Plumbing Code Compliance

Installation must comply with all applicable plumbing codes and regulations.

Technical Specifications

Water Quality Parameters

Raw Water Supply Requirements

Specifies minimum criteria for water supply, pressure, temperature, pH, and turbidity.

Chemical Parameter Limits

Lists maximum acceptable levels for hardness, iron, manganese, and hydrogen sulphide.

Installation Guide

Basement Installation Options

Details how to install the RO system in a basement location.

Installation Steps Overview

Outlines the sequence of installation steps and compliance requirements.

Air-Gap Faucet Connection

Detailed instructions for installing the air-gap faucet and connecting tubing.

Make Drain Connection

Step-by-step guide for connecting the drain saddle and tubing.

Mount the Main Unit

Instructions for mounting the RO system unit under the sink.

Install Pre-Filters and Membrane

Guides on installing the sediment and carbon pre-filters and the RO membrane.

Install Supply Valve

Instructions for connecting the self-piercing supply valve to the water pipe.

Storage Tank Connections

Connects the filtered water storage tank to the system via tubing.

Start-Up Procedure

Guides on turning on the system, checking for leaks, and initial flushing.

Maintenance

Winterizing and Storage

Instructions for draining the unit and storing it during winter.

O-Ring Lubrication

Apply food-grade silicone lubricant to O-rings during maintenance.

Sump Replacement Recommendation

Recommends replacing filter sumps every 5 years to prevent issues.

Housing Cleaning Precautions

Avoid using organic solvents for cleaning housings to prevent damage.

Cartridge Replacement Schedule

Provides a schedule for replacing pre-filters, post-filters, and the RO membrane.

Pre-filter Replacement Procedure

Step-by-step guide for replacing sediment and carbon pre-filters.

Post-Filter Replacement

Instructions for removing and installing the post-filter.

RO Membrane Replacement

Guides on identifying membrane end-of-life and replacing it.

System Sanitization Procedure

Instructions for sanitizing the RO system annually or during filter changes.

Troubleshooting

Faucet Gurgling Noise

Explains that gurgling is normal during storage tank filling.

No Water from Faucet

Troubleshoots issues like closed valves, plugged filters, or defective components.

Water Flow in a Trickle

Addresses low flow issues related to tank pressure, valves, or filters.

Pressure Tank Issues

Diagnoses problems with the storage tank losing pressure or becoming defective.

Sour Water Taste

Identifies an exhausted post-filter as the cause of a sour taste.

Continuous Drain Flow

Troubleshoots drain lines that do not stop, often due to kinks or blockages.

Drain Issues

Addresses problems with the drain tube or drain restrictor being blocked.

Air Bubbles in Faucet

Explains that air bubbles are normal after installation or cartridge changes.

Sump Removal Difficulty

Provides solutions for stuck sumps, including checking pressure and lubrication.

Rainfresh RO450 User Manual

Table of Contents