Puretec RI-HF19 User manual

User Guide
Puretec Radfire™ Commercial UV Water Sanitiser
RI-HF19
For correct operation & installation, it is essential to observe these instructions.
AUG2022

2Installation & Operation Manual Copyright © Puretec Pty Ltd 2022
What's Inside
What's Inside
Puretec Customer Service ............................................................................................................ 3
Installation Record............................................................................................................................ 3
Safety Instructions........................................................................................................................... 4
System Overview............................................................................................................................... 5
Application............................................................................................................................................. 6
Fig. 1 - UV Reactor (Chamber) Parts Diagram .................................................................7
Installation ............................................................................................................................................ 8
Maintenance .................................................................................................................................... 10
Controller ............................................................................................................................................ 16
Fig. 2 - Controller Layout........................................................................................................... 16
4-20ma For PLC Connectivity ................................................................................................ 24
Fig. 3 - Incorrect Installation of 4-20ma Signal .......................................................... 25
Fig. 4 - Correct Installation of 4-20ma Signal............................................................... 25
Warranty.............................................................................................................................................. 26

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Puretec Radfire RI-HF SeriesCopyright © Puretec Pty Ltd 2022
Puretec Customer Service
Thank you for purchasing an Industrial Radfire UV (ultraviolet) Water Steriliser. Your UV Water
Steriliser is a proven performer, manufactured from highest quality materials and will give
years of trouble free service if maintained properly.
Protecting your water supply with a UV system gives you reassurance that you will have
access to safe drinking water throughout the entire building/facility with no chance of
microbiological contamination. This is chemical free process which is simple in its concept
and effective in its abilities to inactivate microorganisms present in the water supply. Simple
maintenance, continuous disinfection and ultimately safe water. Puretec makes it that easy.
Customer Service Helpline 1300 140 140 (Australia) 0800 130 140 (New Zealand).
PRODUCT INFORMATION
Model Number:
Serial / Batch Number:
(Refer to label on the unit)
Purchased From:
Date of Installation:
Installer / Plumber Details:
Installation Record
For future reference, fill in the following data:
All installation and service work should be completed by qualified tradespeople. Faulty
operation due to unqualified persons will result in voided warranty.
All plumbing must comply with AS 3500.1 and AS3500.2.15.
Puretec Customer Service

4Installation & Operation Manual Copyright © Puretec Pty Ltd 2022
Safety Instructions
WARNING: To guard against injury, basic safety precautions should be observed, including the
following:
1. Read and follow all safety instructions.
2. Danger: To avoid possible electric shock, special care should be taken since water is
present near electrical equipment. Unless a situation is encountered that is explicitly
addressed by the provided maintenance and troubleshooting sections, do not attempt
repairs yourself. Instead, please contact our technical support division.
3. Ultraviolet lamps, and the sleeves they are housed in, are constructed of quartz tubing.
Quartz tubing is very fragile and easily fractured. Do not strike, bend or apply pressure
to this material or it will break. Broken lamps or sleeves can cause serious cuts and are
not covered under the warranty. Discard lamps and sleeves according to the require-
ments of your local laws.
4. Operate the system only if the chamber is completely filled with flowing water. Intermit-
tent operation of the system requires that a minimum amount of water flows through
the system in order to cool the lamps. Ignoring this will damage the lamps, ballasts, and
electrical systems.
5. Connect this system only to AC power that conforms to the system rating as regards
voltage and voltage specification.
6. Carefully examine the UV system aer installation. It should not be plugged in if there is
water on parts not intended to be wet. Specifically, there should be no leakage from the
quartz seals or water inside the quartz sleeve.
7. Do not operate the UV system if it has a damaged cord or plug, if it is malfunctioning or
if it is dropped or damaged in any manner.
8. Always disconnect water flow and electrically unplug the UV system before performing
cleaning or maintenance activities.
9. Do not use this UV disinfection system for any other purpose other than disinfection of
water. The use of attachments or accessories not approved, recommended or sold by the
manufacturer may cause an unsafe condition.
10. Intended for indoor use only. Do not install this UV disinfection system where it will be
exposed to the weather or to temperatures below freezing. Do not store this system
where it will be exposed to the weather. Do not store this system where it will be ex-
posed to temperatures below freezing unless all water has been drained from it and the
water supply has been disconnected.
11. All repairs are only to be made to the system by Puretec-approved technicians.
Safety Instructions

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Puretec Radfire RI-HF SeriesCopyright © Puretec Pty Ltd 2022
12. Pressure must be relieved from the system prior to any maintenance, to prevent dam-
age to the equipment or personal injury. De-pressurize and drain the UV reactor prior to
maintenance.
WARNING: THE UV LIGHT GIVEN OFF BY THIS UNIT CAN
CAUSE SERIOUS BURNS TO UNPROTECTED EYES AND
SKIN. NEVER LOOK DIRECTLY AT AN ILLUMINATED UV
LAMP. WHEN PERFORMING ANY WORK ON THE UV DIS-
INFECTION SYSTEM ALWAYS UNPLUG THE UNIT FIRST.
NEVER OPERATE UV SYSTEM WHILE THE UV LAMP IS
OUTSIDE OF THE UV CHAMBER.
System Overview
Each UV system is designed to treat water at specified flow rates as outlined in the
specification sheet. All Puretec Series units are provided with two main component parts,
specifically the ultraviolet reactor chamber and the main controller.
Reactor Chamber
The reactor chamber is manufactured from stainless steel 316L and houses the ultraviolet
lamp and quartz sleeve. The lamps used in the Puretec RI-HF models are of a special high
intensity, high output and Amalgam germicidal type. The chamber is designed to mount
horizontally and should be secured to a suitable support. A vertical installation may be
possible but Puretec should first be consulted.
Control Panel
The main controller is made of powder coated steel. The controller is connected to the
chamber via 3.5 meters of cable to allow for application flexibility.
Standard Electronics
1. All Puretec control boxes are equipped with an on/off switch. When the main power to
the system is turned on, the lamp will turn on directly.
2. A separate user accessible fuse or circuit breaker is also provided as protection for the
electronics.
3. A seven segment LED display monitors the remaining number of useful hours of the UV
lamp (Time Elapse Meter) and the days the UV system has been in operation.
4. An audio-visual “Lamp Life Over” and “Lamp Failure” indicator.
5. The Puretec RI-HF Series purchased with the UV Intensity meter option includes a built in
UV Intensity meter along with sensor.
System Overview

6Installation & Operation Manual Copyright © Puretec Pty Ltd 2022
Application
Ultraviolet disinfection provides a simple, inexpensive way of destroying bacteria, mold, virus,
algae and fungi without the use of heat or chemicals. Each Puretec RI-HF system is designed
to achieve a specific energy dose to properly destroy microorganisms.
The dosage which applies to ultraviolet disinfection is proportional to energy, time, and area.
The total UV energy is attributed to the amount of energy emitted from all sides of a UV
lamp and is expressed in watts. The exposure is expressed in seconds and represents the total
time it takes for the water to flow through the UV chamber. The final factor in determining
the dosage relates to the total area and is expressed in m. To summarize, the total dosage
is expressed in W-sec/m2 (or in some cases µW-sec/cm2, micro watt second per centimeter
squared, or J/m2).
• UV Disinfection is affected by many factors and the following should be looked at prior
to the installation of the UV system.
• UV Transmission (transmittance) deals with the effectiveness in which the 254
nanometer wavelength of ultraviolet light is transmitted through the water. The higher
the transparency of the water, the more effective the UV system becomes. This optical
clarity is evaluated by performing a test which passes incident light through a 1 cm
depth of water and recording this against the same test using distilled water as a
reference. This is done using a spectrophotometer.
• The basic designs of the units have taken into account a typical transmission at the
desired wavelength. In practical terms this means that a system designed to disinfect
a flow of about 3 m3/hr at a typical transmissibility (98%), could actually have a lower
flow rate in liquids with a lower transmissibility. As a general guideline, the following are
some typical UV transmission rates:
Deionized or reverse osmosis water: 98 - 100%
Typical filtered fresh water (e.g. rainwater): 94 - 98%
Lakes, bores, or other private sources: 70 - 94%
• WARNING: DO NOT UNDERSIZE UNITS
• If exact transmission quality needs to be determined, have samples tested at a suitable
lab using a proper spectrophotometer calibrated at 254 nm.
• Suspended Solids will act against a UV system by effectively shielding microorganisms
from the ultraviolet light. Dirt, rust, turbidity, etc. all have the ability to block out the
UV light. It is absolutely necessary to properly control the level of suspended solids by
properly pre-filtering the liquid prior to disinfection (pre-filtration down to 5 micron is
considered the minimum).
• Total Dissolved Solids of around 500 ppm can significantly reduce the rated flow rate of
the unit by absorbing UV energy. Proper pretreatment of high TDS levels must be taken
into account.
Application

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Puretec Radfire RI-HF SeriesCopyright © Puretec Pty Ltd 2022
Drain Port
Reactor Outlet
UV Reactor (Chamber)
UV Intensity Sensor Port
Reactor Inlet
Quartz Sleeve
UV Lamp
Sealing O-Ring
Compression Nut
Lamp Connector
Lamp Locator
Cable Gland Sealing Nut End Cover
End Cover Screws
Fig. 1 - UV Reactor (Chamber) Parts Diagram
Note: Diagram above is for representative purposes only. Actual product purchased will differ as per specific model
variant and configuration selected.
Parts Diagram

8Installation & Operation Manual Copyright © Puretec Pty Ltd 2022
Installation
Installation Guidelines
It is recommended that the UV reactor be installed horizontally to facilitate easy replacement
of the lamp and/or quartz sleeve. In the event that you require installing it vertically please
contact Puretec first for installation recommendations.
The UV system should be installed in an easily accessible location to simplify maintenance.
NOTE: OPERATING SPACE EQUAL TO OR GREATER THAN THE REACTOR LENGTH MUST BE
ALLOWED ON THE SIDE OF THE REACTOR (TYPICALLY ON THE SIDE WHERE THE LAMP
IS CONNECTED) TO ALLOW FOR THE LAMPS AND QUARTZ SLEEVE TO BE REMOVED OR
REPLACED.
• Install equipment in an indoors environment.
• The ambient temperature in the installation area should be between 10°C and 40°C with
the relative humidity less than 80%.
• Insulate the unit from extreme temperatures.
• Install the chamber horizontally (if mounting vertically first contact Puretec).
• To avoid trapping air and optimal performance ensure the outlet is at the highest point.
• Allow maintenance space around the system, including the reactor length for lamp and
quartz removal.
• Ensure that the UV controller display and keypad on the control panel are at eye level
and easily viewable. Mount the control panel at a height from the floor as a precaution
against water flooding.
• When mounting the control panel on the wall, ensure there is at least a 15 cm (6 inches)
of air space around the sides of the panel for sufficient cooling of the inner electronic
components. The more air space there is around the control panel the more efficient the
cooling will be.
• The maximum cable length between the control panel and the UV reactor is 3.5 m. Plan
the location of the reactor and panel accordingly. Do not attempt to increase the length
of this wire in any way.
• The mains supply cable to the control panel is already pre-wired. This is connected to
the control panel through one of the available inlet ports on the bottom of the panel and
is wired directly to the terminal blocks. In case a longer run of wire is required this wire
may be replaced, but ensure that the correct gauge wire is used and the connections
done in a proper manner. Refer to the electrical wiring diagram for more information.
• Ensure that a situation does not arise where the system is running dry (without water)
or where the water is stagnant inside the system. This situation can cause the reactor to
overhead damaging the lamps, ballasts, and other electrical systems. If such a situation
may arise, provide a bleed valve so that there is always a minimum flow through the UV
reactor.
Installation

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Puretec Radfire RI-HF SeriesCopyright © Puretec Pty Ltd 2022
Procedure
1. Select a suitable location for the reactor and the control panel. Make sure that there is a
minimum allowance of 1.2 meters of clear space at the connection end of the chamber
to facilitate lamp replacement and servicing.
2. In an effort to adequately protect the electrical components inside the reactor, the unit
must be connected to an electrical outlet which is protected by an earthing line as well
as a surge suppressor.
3. For maximum performance, ensure that the plumbing is done in such a manner that the
outlet is at the top of the reactor.
4. Once the reactor is securely mounted, plumb the inlet and outlet ports to the supply and
delivery lines with the appropriate connections. If using a threaded model make sure
Teflon tape or an equivalent is used on the threads to ensure an adequate seal. When
making connections, be sure not to drop anything into the reactor chamber that may
damage the quartz sleeves/lamps or contaminate the reactor chamber.
5. If the quartz sleeve is not already installed in the reactor follow the instructions in the
Quartz Sleeve section and install them.
6. Aer all connections are made, SLOWLY turn on the inlet valve and SLOWLY fill the
reactor chamber with water. Once the chamber is full, check for leaks from the fittings. If
a leak is evident, drain system and reconnect the fittings.
7. Secure the control panel to the appropriate wall making sure the panel is mounted
within 3 meters of the connection end of the reactor chamber. Install the UV lamps as
described in the Lamp Installation/Replacement section and make all the necessary lamp
connections. If provided on your model, connect the earthing wire to the earthing stud on
the UV reactor using the provided earthing nut.
8. If your system has been supplied with a UV Intensity Sensor and Window (optional), then
carefully install the window assembly into the reactor housing at the sensor mounting
point [14] by first ensuring that the window sealing O-ring is fitted on the window and
then screw the window into the reactor and tighten to achieve a water-tight seal. DO
NOT OVER TIGHTEN. The sensor can later be fitted into the window.
9. Next, plug the reactor into the appropriate outlet and check to see if all the UV lamps
are illuminated. Do not look directly at the burning UV lamp without the use of protective
eyewear. Once it is determined that the UV lamps are illuminated, disconnect panel from
power source until all plumbing connections are final.
10. The system should now be thoroughly flushed to clean out any particulate matter that
may have entered the reactor chamber during installation as well as flushing out any air
that may have accumulated during the “filling” of the reactor.
WARNING: SUDDEN OPENING OF THE INLET FLOW MAY SERIOUSLY DAMAGE UV LAMPS OR
QUARTZ SLEEVES. ALSO ENSURE THAT NO STONES, WELD PARTICLES ARE PRESENT IN THE
WATER LINE. THESE WILL DAMAGE AND BREAK THE QUARTZ SLEEVES AND LAMPS.
Installation

10 Installation & Operation Manual Copyright © Puretec Pty Ltd 2022
UV Intensity Sensor Calibration Resetting
In case of a new installation or when the lamp is replaced with a new one, it is important to
reset the sensor calibration settings. This must also be performed in case a new sensor is
being fitted to the system.
Follow the procedure as per the instructions in the Recalibrating The UV Sensor section.
Maintenance
UV Lamp
The RI-HF UV lamps are mounted inside the UV reactor. Each UV Lamp is housed within its
own protective quartz sleeve, which protects it from water flow. The sleeves are supported on
both sides of the reactor by the end plates. The entire lamp and then quartz sleeve can be
removed for service.
The germicidal UV lamp is a low pressure, high intensity and amalgam type lamp, with
preheated starting to promote lamp life.
The frequency of UV lamp replacement will depend on various factors such as:
• Water temperature, max operating temperature = 45°C
• Frequency of switching lamps ON and OFF
• Total operating time of the lamps. Maximum operating hours is 12,000 hours
•
NOTE: DO NOT CYCLE LAMPS ON/OFF MORE THAN THREE (3) TIMES PER 24-HOUR PERIOD.
CYCLING OF LAMPS ON/OFF MORE THAN 3 TIMES IN A 24-HOUR PERIOD MAY RESULT IN
PREMATURE LAMP FAILURE AND VOID OF WARRANTY.
Use only quality replacement parts from Puretec. Using any non-genuine lamps, quartz,
O-rings or spares in the UV system can affect the performance of the system and void the
warranty.
Maintenance