Rainfresh R519 Installation & Maintenance Instructions Manual

Ultraviolet (UV) Water Disinfection System  

Models - R519/R830  

Installation & Maintenance Instructions

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INTRODUCTION

Rainfresh water disinfection systems utilize the proven properties of ultraviolet light (UV). UV emitted at 254 nm wavelength

kills/inactivates harmful bacteria (i.e. coliforms, fecal coliforms & E.Coli), viruses, fungi, algae, spores and other microorganisms

in water. UV purification is a natural, non-chemical, environmentally safe technique which does not form any harmful disinfection

by-products.

HOW YOUR UV DISINFECTION WORKS

Your Rainfresh UV system consists of a low-pressure UV lamp enclosed in a

transparent quartz dome, housed in a stainless steel disinfection chamber. As

untreated water enters the chamber from one end, microorganisms like bacteria,

viruses, fungi, algae etc in the water are exposed to ultraviolet light being emitted by

the UV lamp. The UV light kills/inactivates these microorganisms and treated water

flows out of the chamber and is ready for consumption. See Fig. 1

SAFETY INSTRUCTIONS

* To avoid possible electric shock, extra care should be taken since water may be 

present near electrical equipment. Unless specifically referred to in these     

instructions, do not attempt repairs yourself. Contact the manufacturer for service 

advice.

* Do not plug the unit in if any electrical surfaces or electrical parts are wet.

* DO NOT LOOK DIRECTLY AT UV LAMP WHEN LAMP IS ON. UV light can 

cause serious burns to unprotected eyes and skin.

Do not operate the UV lamp outside the UV disinfection chamber.

* Do not use this unit for any purpose other than its intended use for potable water

disinfection. The use of attachments not recommended, approved or sold by the

manufacturer may result in improper performance of the unit or an unsafe         

condition.

* Do not operate the system if it has a damaged electrical cord or plug, is malfunctioning, or has been damaged in any way.

*  Do not touch the lamp or quartz dome with dirty or moist hands. Hold the lamp and dome by the ends with soft dry gloves

or cloth.

* Before any cleaning or maintenance on the system, always unplug the unit from the power source. Disconnect from the 

power outlet by holding the plug. Never pull the cord.

* You must connect your UV unit to a grounded (3-pronged) receptacle (a GFI is preferred) and ensure that the lamp connector

ground wire is connected to the stainless steel end of the main chamber. Use of extension cords is not recommended.

* Installation of the UV disinfection system and water filter will interrupt electrical grounding continuity of your plumbing system. 

For directions on restoring the electrical grounding continuity, consult your local electrical inspector.

* Power source for applications outside North America must match requirements of the unit (For example 220V, 50Hz or other).

*  Protect your unit from freezing. Drain all water from the unit if freezing temperatures exist.

* The UV lamp inside of the disinfection system is rated at an effective life of approximately 9000 hours. To ensure continuous 

protection, REPLACE UV LAMP ANNUALLY.

BEFORE YOU INSTALL THE SYSTEM

1.

Fig. 1

The unit should only be operated with water that meets the following minimum criteria:

* Turbidity/Suspended 

Solids: Less than 5 PPM (mg/L). Ideally less than 1 NTU (Nephelometric Turbidity Unit). 

A 5 micron 

sediment filter should be installed before the UV system at all times. We recommend Rainfresh Model FC150 (5 micron sediment  

filter and housing assembly)

If the feed water has fine sediment, a finer pre-filter (1 micron or smaller) may be used. If the 

water has very high turbidity, a back-washable multi-media filter is recommended.

* Hardness: Less than 7 gpg (120 mg/L). Hard water causes scale build-up on the quartz sleeves thereby reducing the UV 

transmittance in the water and in turn reduced performance. For high hardness water, a water softener should be installed 

prior to the UV system.

* Iron & Manganese: Iron less than 0.3 PPM (mg/L) and Manganese (less than 0.05 mg/L) is desirable. At higher               

concentrations, a suitable water conditioner (e.g a greensand filter) should be installed prior to the UV system to prevent 

iron build-up on the quartz dome.

* Tannins and Colour: Water with tannins or colour has low UV transmissivity that reduces UV system performance.

A tannin-removal / colour-removal activated carbon system should be installed to improve UV performance.