uv guard SLT Series User manual

Installation
and Operation
Manual
ATTENTION: Please read this manual carefully and follow the instructions.
Installation shall be carried out only by authorised technicians.
1300 052 052
uvguard.com
© Copyright UV Guard Australia. All rights reserved.
SLT-Series™
Models: UVG SLT12, UVG SLT30, UVG
SLT40, UVG SLT75, UVG SLT80, UVG
SLT125, UVG SLT172

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SLT-Series™
Contents
1. INTRODUCTION ................................................................................................................ 4
1.1 General Safety Instructions 4
2. ASSEMBLY AND INSTALLATION ................................................................................... 5
2.1 Installing the Reactor 7
2.2 Quartz Thimble/Sleeve and UV Lamp Installation 8
2.3 Power Supply Box Installation 10
2.4 Basic Thermal Relief Valve Installation (Option) 12
3. SERVICING AND OPERATING ...................................................................................... 13
3.1 Servicing Intervals 13
3.2 Servicing the Quartz Thimble 14
3.2 Servicing the UV Lamp 14
3.4 Servicing and Operating UV Controllers 15
3.4.1 – 40044 and 40089 Controllers 15
3.4.2 – 40051 and 40091 Controllers 15
3.4.3 – 40050, 40090, 40105, 40185 and 40173 Controllers 15
3.4.4 – UVG Weatherproof Controllers 17
3.4.4.1 – System Start Up 17
3.4.4.2 – UV Intensity Calibration/Lamp Timers Reset 18
3.4.4.3 – UV Intensity Calibration Without Resetting Lamp Timers 18
3.4.4.4 – Status Screens 19
3.4.4.5 – System Faults/Alerts and Troubleshooting 19
4. SPARE PARTS LIST WITH CORRESPONDING PART NUMBERS ............................ 19
5. WARRANTY ....................................................................................................................... 20

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SLT-Series™
1. INTRODUCTION
UV disinfection is an ecient, low cost and environmentally friendly process. UV light kills
pathogenic micro-organisms quickly without leaving any residues, harmful by-products or
aecting the smell or taste of the water.
These units use UV lamps which emit UVC radiation at 254nm which disrupts the DNA in the micro-
organisms, so they are either killed or their ability to replicate is destroyed.
The kill rate depends on the UV dose received by the micro-organisms, i.e. the time that a micro-
organism is exposed to a certain intensity of UV radiation (Wm2). A UV dose of 400 J/m2, is
recognized internationally as a suitable dose to ensure safe disinfection of drinking water.
The disinfection performance of a UV system is determined by the intensity of the UV light, water
flow rate, the optical transmission of the water at 254nm and the geometry of the reactor. The
sizing of the UV system should be based on these parameters. Please contact your UV Guard
representative if you have any queries regarding correct sizing.
As there are no disinfection substances added to water by UV radiation, there are no residual
eects once the water has passed through the UV Reactor.
Only UV Guard Australia Pty Ltd spare parts should be used to ensure proper operation and
performance.
1.1 General Safety Instructions
ELECTRIC SHOCK!
Attention: Dangerous electric voltage is present inside the power supply box and
chamber These instructions must be followed closely to prevent serious personal injuries.
ENSURE EYE PROTECTION IS WORN WHEN SERVICING AND
INSTALLING THIS UNIT!
UV-C radiation is harmful to the eyes and skin! UV lamps should be used only when properly installed
in the irradiation chamber. The UV lamp must never be operated outside the disinfection chamber.
•Make sure this disinfection unit is only used for the intended purpose as described in the
operating instructions.
•This disinfection unit is to be installed properly, according to these operating instructions,
before use.
•Do not use a unit with a damaged electrical lead or plug, a unit with any faulty functions, or a
unit which has been dropped or has been damaged in some way.
•Make sure that the unit is unplugged when it is not being used, before fitting, or removing any
parts, or before cleaning the unit.

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SLT-Series™
•Ensure the disinfection unit is electrically isolated before:
o Carrying out repairs.
o Cleaning.
o Replacement of the UV lamp
•The unit must be depressurized before maintenance.
•Do not use the UV lamp outside of the UV disinfection reactor.
UV Guard UV lamps are designed for permanent operation to reach their best disinfection
capacity. Frequent switching on and o reduces the life of the UV lamp!
2. ASSEMBLY AND INSTALLATION
Installation should meet the AS/NZS 3500.1 Plumbing and drainage standards at all times.
Installation should be carried out only by qualified technicians.
The Following MUST be Checked Prior to Installation:
•A maximum operating pressure of 800KPa (8 bar or 125 psi) must not be exceeded.
•The maximum ambient temperature is 45оC
•For the SLT12, SLT30, SLT40, SLT75 and SLT80 units, maximum water temperature should not
exceed 40оC. The SLT125 and SLT172 units utilise Amalgam UV lamps and can be operated at
water temperatures of up to 55оC
•The reactor must be plumbed so it remains full of water at all times while the lamp is
operating.
•If the SLT12, SLT30 and SLT40 models are left on during extended periods of no flow, the water
in the reactor will begin to get warm. A tap may need to be run for a few seconds until the
warm water passes.
•The SLT75, SLT80, SLT125 and SLT172 models will produce higher water and UV reactor
temperatures if they are left on during extended periods of no flow. This may damage the
UV lamp due to overheating and cause skin burns if the UV reactor is touched. There is also
the potential for water burns depending on the vicinity of the system to the water outlet. it is
recommended a temperature management valve is installed on the outlet of the reactor of
these UV systems. This is to manage the temperature of the UV reactor and water from getting
too hot (55 degrees). At 55 degrees the valve will open to purge a small amount of water out
of the reactor to either be returned to the source, or dumped to waste. The water flow from
this action will cool the reactor and then closes the valve automatically. The warm water is
replaced by new cool water.
Recommended systems to use a thermal relief valve are the UVG SLT75, SLT80, SLT125, SLT172.
However, thermal relief valves can also be provided for the SLT30 and SLT40 models to prevent
warm water reaching the outlet.

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SLT-Series™
Models
1. The following reactor models are available in the SLT series. (Table 1)
Series Length No. Lamps in
unit
Diameter
mm Inlet/outlet Ø
Min. space to
service reactor
at power end of
chamber mm
SLT 12 245mm 162 ¼“ BSP Nipples 300
SLT 30 525mm 162 ¾”BSP Nipples 600
SLT 40 895mm 162 1” BSP Nipples 1000
SLT 75 895mm 162 1” BSP Nipples 1000
SLT 80 895mm 188 2” BSP Nipples 1000 *
SLT 125 895mm 188 2” BSP Nipples 1000 *
SLT 172 895mm 188 2” BSP Nipples 1000 *
Table 1
*Space is also required at the blank end of the chamber for servicing the quartz thimble for the SLT12, SLT80, SLT 125
and SLT 172 units. A 100 mm space will be sucient.
System Components
Gasket & End Cap
Sealing Nut
Inlet/Outlet Inlet/Outlet
Stainless Steel Reactor
O-ring
Quartz Sleeve/
Thimble
UV Lamp
4-pin
UV Lamp Plug
Sealing Nut
UV Controller
Power Plug
O-ring
(SLT80, SLT125,
SLT172 only)
(SLT80, SLT125,
SLT172 only) Three (3)
M3x12mm
Screws
Before installing the system, carefully unpack
all components and compare what you have
received against the following component list
tables (Table 2a), checking the part number and
quantities. Also ensure that your purchased UV
controller has been supplied. If any items are
missing, contact your UV Guard representative.

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SLT-Series™
Standard model component list
Model/
Reactor UV Lamp Quartz Thimble Quartz O-Ring Sealing Nut (power end) Sealing Nut (blind side) End Cap Screws
UVG SLT12 11020 20100 31005 32103 32103-B -
UVG SLT30 11030 20295 31001 32102 -32105 x 3
UVG SLT40 11040 20310 31001 32102 -32105 x 3
UVG SLT75 11074 20310 31001 32102 -32105 x 3
UVG SLT80 11080 20140 31006 x 2 32109 32108 32105 x 3
UVG SLT125 11125 20140 31006 x 2 32109 32108 32105 x 3
UVG SLT172 11172 20140 31006 x 2 32109 32108 32105 x 3
Table 2A
2.1 Installing the Reactor
•Before installation ensure you know which reactor type you are using.
•Make sure that there is enough free space to service the glassware with the reactor (see
Table 1). Otherwise it will not be possible to install the UV lamp and maintain the UV system.
•The reactor is to be fixed by means of the mounting legs, either on the wall or on a mounting
frame.
•The disinfection chamber comes complete with it’s own wall mounting brackets
•The preferred orientation for the reactor is horizontal, however vertical orientation is
acceptable. The in-outlet ports should be pointing up for horizontal installations, or the
outlet should be the top port in vertical installations, to prevent airlocks.
•Refer to Table 1 for the distance from the sealing nut, required for servicing the unit.
•When mounting the chamber, consideration must be made for the weight of the system due
to the stresses associated with pipe work etc.
•The stainless steel chamber and surrounding pipe-work must be properly earthed to prevent
electrolysis/corrosion.
Outlet points should be facing upwards in horizontal
installations, or the outlet should be the top port in vertical
installations to prevent airlocks.
U Configuration
Inlet/Outlet Inlet/Outlet
Outlet
Inlet
Horizontal
Installation Vertical
Installation

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SLT-Series™
2.2 Quartz Thimble/Sleeve and UV Lamp Installation
DUE TO THE FRAGILE NATURE OF THE QUARTZ, CARE MUST BE TAKEN WHEN HANDLING AND
INSTALLING THE QUARTZ THIMBLE and UV LAMP.
Cotton or powder free nitrile gloves should be worn whenever handling the UV lamp or quartz in
order to prevent finger print marking, which will detrimentally impact UV intensity.
•Remove the sealing nut(s) from the reactor and ensure the O ring seal is removed as well. For
the UVG SLT12, SLT80, SLT125 and SLT172 units remove the blind sealing nut from the blind end
of the chamber as well.
•Take the quartz thimble and wipe it down with the alcohol wipe provided to remove any
grease and finger marks, then dry it. Insert the domed end of the quartz thimble into the
chamber and locate the thimble in its support spring at the far end of the chamber. Failure
to locate the domed end of the quartz thimble into the support spring may result in water
leakage or quartz thimble breakage. For the double ended SLT12, SLT80, SLT125 and SLT172
position the quartz thimble so there is equal amounts of quartz sticking out of each end of the
chamber.
Reactor
Sealing Nipple
Quartz Thimble
For SLT12, SLT80, SLT125 and SLT172
double ended chambers, the quartz
needs to be centered so there is an
equal amount at each end.
For single ended chambers the quartz needs
to be located so there is a maximum of 14mm
protruding from the end of the chamber when
the support spring is fully compressed.
•Apply a generous amount of food grade O ring lubricant to the O ring. This is provided with all
new UV Guard systems. If you are servicing an older system, contact UV Guard for more O ring
lubricant as this MUST be applied.
•Place an O ring over the quartz so the O ring is positioned against the chamber on the sealing
nipple. For the double ended SLT12, SLT80, SLT125 and SLT172 there is an O ring at each end of
the chamber.
O Ring seal
For SLT12, SLT80, SLT125 and SLT172 double
ended chambers, an O ring needs to be
placed over each end of the quartz.
For single/double ended chambers an O ring
needs to be placed around the quartz so it is
against the chamber on the sealing nipple.

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SLT-Series™
•For double ended chambers the blind sealing nut needs to be screwed on the chamber over
the domed end of the thimble. The open sealing nut needs to be screwed on to the chamber
over the open end of the quartz thimble. The sealing nuts should be tightened to firm hand
tightness. They should not be tightened with a mechanical aid such as multi-grips. Look
through the sealing nut to check the O ring is compressed on to the quartz thimble.
For SLT12, SLT80, SLT125 and SLT172 double ended
chambers, blind sealing nut needs to be screwed
on over the domed end of the quartz.
For single/double ended chambers the
open sealing nut needs to be screwed on
over the open end of the quartz thimble.
•DO NOT INSTALL UV LAMP YET. The UV reactor quartz thimble O ring seal/s now need to be
checked. Allow water to enter the UV reactor until operating pressure is reached. Leave the UV
reactor full of water at operating pressure for a minimum of 15 minutes. Using a torch, inspect
the O ring seal/s and check for water leaks. If a leak occurs, gently tighten the sealing nut/s
until the leak stops.
•Remove the UV lamp from its protective wrapping and wipe down with an alcohol wipe or
cloth soaked in methylated spirits. Do not touch it without protective gloves, care should be
taken not to leave markings of any nature on the UV lamp, as this could have a detrimental
eect on the performance of the UV lamp. Allow alcohol or methylated spirits to dry.
•Insert the UV lamp into the quartz thimble through the hole through the centre of the sealing
nut. If the reactor is installed vertically, NEVER drop the lamp into the quartz thimble, as this
may break the quartz thimble.
•Using a soft cloth, or wearing gloves to hold the UV lamp, push the female 4 pin connector
firmly on to the lamp pins.
UV Lamp
4 Pin Connector
Open
Sealing
Nut
Check
O Ring
compression
BLIND SEALING NUT CHECK COMPRESSION OF O RING

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SLT-Series™
•Locate the three holes in the end cap with the three holes on the end of the sealing nut. For
the SLT12, secure the plastic cap over the sealing nut and tighten the screw located on the
outside of the cap to lock into position. Screw all three screws (M3) through the holes in the
end cap, into the sealing nut.
Sealing Nut complete
with UV Lamp installed
and cable secured
2.3 Power Supply Box Installation
The power supply box must be mounted clear of the floor as a precaution against the
ingress of water.
•The power supply box is not designed for remote mounting. Recommended maximum
distance of chamber to power supply box is two (2) metres.
•UV Guard have indoor and weatherproof controllers.
Identify your controller using the part numbers in the
following table to check installation details
For details of how to operate the digital power supply boxes, including how to calibrate the UV
intensity of a new UV lamp see Section 3 – Servicing and Operating.
•Secure earth lug on the designated earth point.
•Insert the power lead into the outlet then turn power on. The UV lamp will ignite and come on,
however it will take between 2 and 5 minutes for the lamp to reach full output.
Earth Point