PURELAB Classic - US

Operator Manual
ELGA PURELAB Classic Operator Manual

Copyright Note
The information contained in this document is the property of VWS
(UK) Ltd. and is supplied without liability for errors or omissions.
No part of this document may be reproduced or used except as
authorized by contract or other written permission from VWS (UK) Ltd.
The copyright and all restrictions on reproduction and use apply to all
media in which this information may be placed.
VWS (UK) Ltd. pursue a policy of continual product improvement and
reserve the right to alter without notice the specification, design, price
or conditions of supply of any product or service.
© VWS (UK) Ltd. 2014
All rights reserved.
Publication ref: MANU40555
Version 1 08/14
ELGA LabWater is a trading name of VWS (UK) Ltd.
ELGA® and PURELAB® are registered trademarks.

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TABLE OF CONTENTS
1. INTRODUCTION ........................................................... 1
1.1 Product Range ..................................................... 1
1.2 Use of this Manual ................................................ 1
1.3 Customer Support ................................................ 1
2. HEALTH AND SAFETY NOTES ................................... 2
2.1 Electricity .............................................................. 2
2.2 Ultraviolet Light..................................................... 2
2.3 Control of Substances Hazardous to Health
(COSHH) .............................................................. 2
3. PRODUCT AND PROCESS DESCRIPTION................. 3
3.1 Product Description .............................................. 3
3.2 Process Description ............................................. 4
3.3 Technical Specification ......................................... 8
4. CONTROLS ................................................................ 11
5. INSTALLATION INSTRUCTIONS ............................... 12
5.1 Unpacking the PURELAB Classic....................... 12
5.2 Positioning the PURELAB Classic ...................... 12
5.3 Connecting the PURELAB Classic ..................... 14
5.4 Initial Controller Set up ....................................... 16
5.5 Setting Up Password / Resetting Replacement
Timers ................................................................ 20
5.6 Initial Start Up ..................................................... 22
5.7 POU Filter Installation (LC134) – Optional
Accessory........................................................... 24
6. OPERATION ............................................................... 25
6.1 Intermittent Recirculation .................................... 25
6.2 Manual Dispense................................................ 25
7. MAINTENANCE .......................................................... 26
7.1 Replacing the Purification Pack (LC186) ............ 26
7.2 Replacing the Ultrafilter (LC169) ........................ 27
7.3 Replacing the Ultraviolet Lamp (LC170) ............. 30
7.4 Replacing the Point-Of-Use Filter (LC134) ......... 31
7.5 Cleaning Inlet Strainer ........................................ 32
8. SANITIZATION PROCEDURES ................................. 33
9. TROUBLE SHOOTING ............................................... 34
10. CONSUMABLES AND ACCESSORIES ..................... 35
11. KEY TO CONTROL PANEL ....................................... 36
11.1 Icons .................................................................. 36
11.2 Alarm Conditions ................................................ 37
11.3 Replacement Timers .......................................... 37

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11.4 Quality Alarms ................................................... 38

12. WARRANTY/CONDITIONS OF SALE ....................... 39
13. USEFUL CONTACT DETAILS ................................... 41

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1. INTRODUCTION

1.1 Product Range

This operator manual has been prepared for the PURELAB Classic
product models:
PURELAB Classic DI - US
PURELAB Classic UV - US
PURELAB Classic UF - US
PURELAB Classic UVF - US

1.2 Use of this Manual

This manual contains full details on installation, commissioning and
operation of the PURELAB Classic unit. If the instructions in this
handbook are not followed then the performance of this product
and/or the safety of the user may be compromised.

1.3 Customer Support

PURELAB Classic
Service support and consumable items are available from your local
ELGA LabWater distributor. Refer to customer service contact details
shown at the end of this publication.

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2. HEALTH AND SAFETY NOTES

PURELAB Classic products have been designed to be safe,

however, it is important that personnel working on these units
understand any potential dangers. All safety information detailed in
this handbook is highlighted as WARNING and CAUTION
instructions. These are used as follows:
WARNING! WARNINGS ARE GIVEN WHERE
FAILING TO OBSERVE THE
INSTRUCTION COULD RESULT IN
INJURY OR DEATH TO PERSONS.
CAUTION! Cautions are given where failure to
observe the instruction could result in
damage to the equipment, associated
equipment and processes.

2.1 Electricity
Mains power socket
Fuse It is essential that the electrical supply to the PURELAB Classic is
isolated before any items are changed or maintenance work
performed.
ON/OFF
switch The ON/OFF switch is located at the left-hand side of the unit. The
mains power lead is located just behind the ON /OFF switch.
Mains power lead WARNING! THIS APPLIANCE MUST BE EARTHED.

The main water supply should be isolated and residual pressure

released prior to removal of any Purification Packs or carrying out
work on the unit.
Switching off the electrical supply will isolate the source of mains
water pressure.

2.2 Ultraviolet Light

WARNING! UNDER NO CIRCUMSTANCES SHOULD
THE LAMP BE CONNECTED AND
ACTIVATED WHEN OUTSIDE THE
HOUSING.
The Classic UV and Classic UVF units are fitted with an ultraviolet
lamp. The UV lamp is enclosed in a stainless steel chamber ensuring
that the operator will not be exposed to UV light.

2.3 Control of Substances Hazardous to Health (COSHH)

Material safety data sheets covering the various replaceable
Purification Packs are available upon request. Contact your local
supplier or distributor.

UV Lamp

Classic with UV Lamp

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3. PRODUCT AND PROCESS

DESCRIPTION

3.1 Product Description

The PURELAB Classic water purification unit has been specifically
designed to provide a supply of ultrapure water with very low levels
of impurities for laboratory, medical and industrial applications.
The PURELAB Classic can be bench, under bench or wall mounted
with an optional wall mounting kit. A range of accessories is available
to complement the unit (see Section 10 - Consumables and
Accessories, for details).

Control Panel Dispense Nozzle Dispense Controller

Door

PURELAB Classic

The PURELAB Classic range of water purification units has been

designed to provide high purity water for laboratory applications. The
products need to be fed with pre-treated water, typically from a
reverse osmosis supply. They can be operated directly from a
ringmain feed as point of use polishers, with or without local buffer
storage, using a Docking Vessel or suitable reservoir. Alternatively,
they can be supplied from a local pre-treatment/storage system, for
example a PURELAB Prima and Docking Vessel combination.

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3.2 Process Description

Classic DI

Pre-treated water enters via an inlet solenoid and is then

pumped through the purification pack and temperature and
water quality sensors before being dispensed or re-circulated
through a non-return valve back to the pump inlet.
Ionic and organic impurities are removed by the purification
pack. Product water resistivity and temperature are
measured before dispense and will indicate when the
purification pack needs to be replaced.
The water within the unit is re-circulated through the
purification technologies to maintain purity. To reduce heat
build up the recirculation is at reduced flow rate and is set to
be intermittent (5 minutes every hour).
An optional POU filter is available if required to protect the
outlet from bacterial contamination.

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Classic UV

Pre-treated water enters via an inlet solenoid and is then

pumped through the UV chamber, a purification pack and
temperature and water quality sensors before being
dispensed or re-circulated through a non-return valve back to
the pump inlet.
Purified water flows directly through the UV chamber where it
is exposed to intense UV radiation at a wavelength of 185 nm
to provide continuous bacterial control.
Ionic and organic impurities are removed by the purification
pack. Product water resistivity and temperature are
measured before dispense and will indicate when the
purification pack needs to be replaced.
The water within the unit is re-circulated through the
purification technologies to maintain purity. To reduce heat
build up the recirculation is at reduced flow rate and is set to
be intermittent (5 minutes every hour).
An optional POU filter is available if required to protect the
outlet from bacterial contamination.

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Classic UF

Pre-treated water enters via an inlet solenoid and is then

pumped through the purification pack, an ultrafilter and
temperature and water quality sensors before being
dispensed or re-circulated through a non-return valve back to
the pump inlet.
Ionic and organic impurities are removed by the purification
pack; the ultrafilter removes pyrogens, bacteria and other
microbial impurities as well as particles. Product water
resistivity and temperature are measured before dispense and
will indicate when the purification pack needs to be replaced.
The water within the unit is re-circulated through the
purification technologies to maintain purity. To reduce heat
build up the recirculation is at reduced flow rate and is set to
be intermittent (5 minutes every hour).
An optional POU filter is available if required to protect the
outlet from bacterial contamination.

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Classic UVF

Pre-treated water enters via an inlet solenoid and is then

pumped through the UV chamber, a purification pack, an
ultrafilter and temperature and water quality sensors before
being dispensed or re-circulated through a non-return valve
back to the pump inlet.
Purified water flows directly through the UV chamber where it
is exposed to intense UV radiation at a wavelength of 185 nm
to provide continuous bacterial control and the photo-
oxidation of residual organic impurities.
Ionic and organic impurities are removed by the purification
pack; the ultrafilter removes pyrogens, bacteria and other
microbial impurities as well as particles. Product water
resistivity and temperature are measured before dispense
and will indicate when the purification pack needs to be
replaced.
The water within the unit is re-circulated through the
purification technologies to maintain purity. To reduce heat
build up the recirculation is at reduced flow rate and is set to
be intermittent (5 minutes every hour).
An optional POU filter is available if required to protect the
outlet from bacterial contamination.

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3.3 Technical Specification

The Technical Specifications for the PURELAB Classic are as
follows:

Feedwater*
Parameter Limits
Source - Originally from potable supply, Preferably reverse osmosis (RO) or filtered service deionisation (SDI) or distilled.
then pre-treated Note: mixed bed or twin bed deionised supplies should be cation limited at exhaustion.

Fouling Index (max) 1 for all models. A 0.2 micron membrane prefilter is recommended for all non-RO feeds.

Service Deionisation (SDI) - M-cm 1 M-cm minimum resistivity at exhaustion.

Reverse Osmosis (RO) - µS/cm Recommended < 30 µS/cm
Free Chlorine 0.05 ppm max.
TOC Recommended 50 ppb max.
Carbon Dioxide 30 ppm max.
Silica 2 ppm max.
Particulates Filtration down to 0.2 micron advisable to protect internal and/or point of use filters.
Temperature 1 - 40°C - Recommended 10 - 15°C
Flowrate (maximum requirement) 130 l/hr
Drain requirements (gravity fall with air gap). Up to 2 l/min
Maximum during service
Feedwater Pressure 0.7 bar (10 psi), maximum, 0.07 bar (1 psi) minimum

* Contact technical support for advice on feedwaters outside the range listed.
Note: Different system configurations are available for different feedwater sources. See system set up.

Dimensions
Height 490 mm (19.3")
Width 410 mm (16.2")
Depth 365 mm (14.4")
Weight
DI 14.0 kg (30.8 lb)
UV 14.5 kg (32.0 lb)
UF 14.5 kg (32.0 lb)
UVF 15.0 kg (33.1 lb)

Connections
Inlet-quick connect 8 mm (5/16") OD
Flush - UF/UVF 8 mm (5/16") OD
Positioning Wall, bench or under bench mounted.
Environment Clean dry indoor. Temp 5 - 40°C.
Humidity max 80% non-condensing.

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Electrical Requirements
Mains input 100 -240 V ac, 50-60 Hz all models
System voltage 24 V dc
Power consumption during recirculation 60 VA
Power consumption during dispense 75 VA
Fuses 2 x T6.3 Amp
Reservoir level connection Jack Plug 3.5 mm
Noise level during recirculation <40 dBA

User Interface
Display Continuous graphical quality display
Graphical flow schematic on screen with mimic display
Backlit display with Intuitive Icons

Adjustable settings Display viewing angle Adjustable electronically

Water quality units Selectable (M.cm or µS/cm)
Water quality alarm Selectable alarm setpoints
Date / time Adjustable
Auto restart after power failure Selectable (On/Off)
Audible alarm Selectable (On/Off)
Temperature control Selectable alarm setpoints
Reservoir Selectable (On/Off)
Indicators Product water quality Resistivity or conductivity
Temperature Degrees Centigrade
Purification pack Replacement date
UV lamp* Replacement date
Filter* Replacement date

Alarms-Audiovisual Purified water purity Below set point alarm

Temperature Above set point alarm
UV lamp operation* Imminent lamp failure or failure to start
Purification pack Change reminder
UV lamp* Change reminder
Filter* Change reminder
Reservoir**** Low level / level control disconnect alarm

Outputs RS232 printer connection

RS232 remote display connection
Volt free contact-internal
Remote dispense

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Safety Features
Power fail safe
Water temperature alarm
Water quality alarm
Purification pack interlock
UV current monitoring
Timeout of dispense
Low operating voltage 24 V
Volt free contact alarm connection
Visual alarms
Audible alarms

Operational Features
Low noise levels – minimum intrusion
Variable dispense flowrate
Restart on power interrupt
Optional printer kit to record operating parameters
Optional remote display

Purified Water Specification

DI UV UF UVF
Flowrate 2.0 l/min max.
Inorganic Resistivity 18.2 M.cm (0.055S/cm)
TOC **<15 ppb **<5 ppb **<15 ppb **<10 ppb
Bacteria ***<1 cfu/ml <1 cfu/ml <1 cfu/ml <1 cfu/ml
Pyrogens <0.02 Eu/ml <0.005 Eu/ml
pH Effectively neutral
Particles ***0.2 m ***0.2 m Ultrafiltration

RNase / DNase -
Capacity 45,000 liters >18M.cm per single purification pack/S at pH 7.0
(LC162) 70,000 liters >1M.cm per single purification pack/S at pH 7.0

Confirms to ASTM, CAP, NCCLS – Type 1 and BS3978 Grade 1 Specification.

* On some models only.

** Dependant on feedwater - recommended RO feed <50 ppb TOC.
*** With POU filter fitted.

As part of our policy of continual improvement we reserve the right to

alter the specifications given in this document.

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4. CONTROLS

Process button The PURELAB Classic operates with a tactile membrane control
panel, which has a graphics display window and four multi-purpose
control buttons.
Details of how to use the controls will be given in the appropriate
sections.
The PURELAB Classic control panel has a range of control icons as
follows:

Button Icon Function

PROCESS Turns the process
Left hand Centre Right hand on/off.
Control button Control button Control button
ESCAPE from any
Control Panel feature
LEFT Menu

Scroll

CENTRE Accept

RIGHT Mute Alarm

Printer

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5. INSTALLATION INSTRUCTIONS

5.1 Unpacking the PURELAB Classic

The following items are supplied with your PURELAB Classic:
1. PURELAB Classic unit.
2. By-pass block LA638 (1 off, fitted in unit).
3. 6 metres of 8mm (5/16") O/D tube.
4. 1 off Strainer Assembly.
5. Operator Manual in English.
6. Mains Lead.
7. Reservoir Level Connecting Lead.

5.2 Positioning the PURELAB Classic

Before installation and operation of the PURELAB Classic unit,
please read and observe the following points.
Environment

The unit should be installed on a flat, level surface, in a clean,

dry environment. The unit can also be wall mounted against a
vertical wall capable of supporting the weight (for this we
recommend the use of the wall mounting kit Part No. LA610
on substantial brick/concrete walls or LA622 for stud partition
walls).
WARNING! IF THE UNIT IS TO BE WALL MOUNTED,
ENSURE IT IS MOUNTED USING THE
CORRECT WALL MOUNTING KIT AND
THAT THE WALL IS CAPABLE OF
SUPPORTING THE OPERATING WEIGHT
Rear Mounting Points
OF THE SYSTEM. ALWAYS CAREFULLY
FOLLOW THE INSTRUCTIONS
INCLUDED IN THE KIT.
Note: Refer to Specifications for unit weights
(Section 3.3 - Technical Specification).
The unit is designed to operate safely under the following conditions:
 Indoor Use
 Altitude up to 2000 m
 Temperature Range 5 - 40°C
 Maximum Relative Humidity 80% @ 31°C decreasing
linearly to 50% @ 40°C, non-condensing
The unit is in Installation Category II, Pollution Degree 2, as per
IEC1010-1.

Unit Rear Mounting Points

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Electrical
Mains power socket
Fuse The units can be connected universally to any electrical
supply in the range of 100 – 240 V and 50 – 60 Hz. The mains
lead is supplied with a molded plug on one end and a molded
ON/OFF connector to the unit on the other. The unit should be
switch connected to an earth. The unit includes a battery which will
require changing on a periodic basis, typically every 3-5 years.
Mains power lead (Contact local Service provider)
WARNING! DANGER OF EXPLOSION IF BATTERY IS
INCORRECTLY REPLACED. REPLACE
Electrical Connections ONLY WITH THE SAME OR
EQUIVALENT TYPE RECOMMENDED BY
THE MANUFACTURER (3 VOLTS,
LITHIUM CR2032). DISPOSE OF USED
BATTERIES ACCORDING TO THE
MANUFACTURER’S INSTRUCTIONS.
Drain/Flush

A semi-rigid flexible connection to a sink or suitable drain

capable of at least 2.0 l/min is required for Classic UF and
Classic UVF versions. The drain point should have a gravity
fall below the level of the unit and any connections direct to
drain should have an air-break device fitted. A flexible tube
should be temporarily connected to the dispense outlet and
directed to drain during rinsing of purification packs.
Feed Water

The feedwater should be potable water, pre-purified using

reverse osmosis, deionisation, or distillation. If using a supply
other than reverse osmosis treated, it is strongly
recommended that a 0.2 micron membrane filter is installed
within the feed line to remove colloidal impurities. The
feedwater should enter the PURELAB Classic via an 8 mm
(5/16") O/D semi rigid tube, and should be in the temperature
range 1 to 40C (34 to 104F). To ensure optimum
performance it is recommended that the feedwater
temperature be between 10 to 15°C.
CAUTION! Operating with feed water temperatures
outside the range from 1 to 40°C (33.8 to
104F) will cause damage to the
PURELAB Classic unit.
For pressurized feeds, the minimum direct inlet pressure is
0.07 bar (1.0 psi) and maximum inlet pressure is 0.7 bar
(10 psi). Feedwater pressures up to 4 bar (60 psi) must be
reduced using a pressure regulating valve (Part No. LA652).
CAUTION! High feedwater pressures which may
exceed 4bar (60 psi) must be reduced
using a pressure regulator with built in
pressure relief (Part No. LA575).
Failure to install the correct pressure
regulator will cause damage to the
PURELAB Classic unit.
Reservoir feeds to the PURELAB Classic unit should be
positioned at the same height, or above the unit, to provide a
positive flooded inlet pressure of approximately 0.07 bar
(1 psi).

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Connector
Collet
Blanking 5.3 Connecting the PURELAB Classic
transit plug
Once the PURELAB Classic unit has been positioned either on a wall
or on a bench, it should be connected as follows:
 Mains water inlet tube
Pull plug  UF drain tube - to drain

Depress
collet Step 1 - Remove Transit Plugs
1. PUSH in collet on connector.
Clean square
cut end 2. PULL out transit plug.

Tube 8mm OD
3. CUT a clean square end on an 8 mm OD semi-rigid
drain tube.
4. PUSH tube into connector.

Simply push in tube to attach

Tube in secured position

Fitting tubes
Step 2 - Connect Water Inlet
1. Connect 8 mm tube from the PURELAB Classic inlet to
the inlet strainer.
2. Connect the inlet strainer to the pre-purified water
supply.

Step 3 - Connect Drain

Feed Water Inlet
1. Connect 8 mm tube from the UF drain (if fitted) and
direct to a suitable drainage point.
UF Drain CAUTION! The drain line should allow a gravity
fall to drain with no restrictions.

Inlet

Inlet and Drain Connection

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Mains power socket Step 4 - Connect Electrical Supply

Fuse 1. PLUG mains power lead into the mains power socket
on the left-hand side of the PURELAB Classic unit.
ON/OFF 2. PLUG mains power lead into mains socket.
switch

Mains power lead

Electrical Connections

Reservoir Step 5 - Reservoir Level Connection

RS232 level 1. INSERT jack plugs into the level control socket located
connection
at rear of unit and reservoir.
Note: If wall mounting the unit it is recommended
that the jack plug should be inserted prior to
locating the unit on the wall mounting bracket.
Level
control

Reservoir Level Connection

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5.4 Initial Controller Set up

Process button
The PURELAB Classic control panel is fitted with four control
buttons. These are:
1. The PROCESS button, which switches the
purification process ON and OFF.
2. Three software controlled touch pad buttons which are
used to control set-up and process control functions.
When the PURELAB Classic unit is started for the first time after
installation the following steps should be carried out to set up system
preferences:

Left hand Centre Right hand Step 1 - Setting Up Menu Options

Control button Control button Control button
1. SWITCH the mains power on to initialize the controller
Control Panel hardware set-up sequence.
Note: Always allow the initialization process to
complete. Leaving the by-pass block in place
of DI pack, press the PROCESS button to
return to the initial power up screen.
2. PRESS MENU button to activate the set up menu
sequence.

A series of set-up screens will now be displayed.

Various control icons are used to allow you to step
through the set-up instruction process. These icons
include:
 A “scroll” icon indicated by an arrow

Start Up Screen  An “accept” icon indicated by a tick 

 A “selection” icon indicated by a 
At any stage during the Controller Set-up the
PROCESS button can be pressed to escape back to
the initial power up screen.

Step 2 - Password
Restricts access to set up menu sequence.
1. ROTATE Dispense Controller to enter password code.
The default password code is 000.
2. PRESS TICK  button.
Note: To reset password refer to Section 5.5.

Password Screen

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Step 3 - Clock
Set to display the current local time.
1. PRESS Dispense Controller. A cursor will appear under
hour.
2. ROTATE Dispense Controller to increase or decrease
hour.
3. PRESS Dispense Controller to step cursor onto minute.
4. ROTATE Dispense Controller to increase or decrease
minute.
5. PRESS Dispense Controller to accept the minute
setting and set the seconds to 00.
6. PRESS TICK  button.
Clock Screens
Step 4 - Date
Note: Confirm that the correct date has been
entered before installing consumables or
changing replacement dates.
Used to instigate change reminders, it will appear on printed
records.
1. PRESS Dispense Controller. A cursor will appear under
day.
2. ROTATE Dispense Controller to increase or decrease
day.
3. PRESS Dispense Controller to step cursor onto month.
Date Screen 4. ROTATE Dispense Controller to increase or decrease
month.
5. PRESS Dispense Controller to step cursor onto year.
6. ROTATE Dispense Controller to increase or decrease
year.
7. PRESS TICK  button.

Step 5 - Audible Alarm Enabled/Disabled

This display provides the option of either enabling the audible
alarm, causing it to sound (whilst the alarm icon flashes) or
disabling the audible alarm causing it to remain muted.
1. PRESS SCROLL button to highlight box.
2. PRESS TICK  button.
Note: The visual alarm cannot be disabled.

Audible Alarm Enable/Disable Screen

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Step 6 - Water Purity Unit Setting

This screen allows preferred units of water purity to be set, to
either, M.cm or µS/cm.
1. PRESS SCROLL button to highlight appropriate box.
2. PRESS TICK  button.

Water Purity Unit Setting Screen

Step 7 - Uncompensated Water Quality
A U will indicate uncompensated readings in the normal
process screen.
1. PRESS SCROLL button to highlight box if
uncompensated reading is required.
2. PRESS TICK  button.
Note: The on-going display of uncompensated
values is generally not recommended as it
can lead to confusion among users and
increase the possibilities of dispensing water
of inadequate purity.
Uncompensated Water Quality Screen
Step 8 - Product Water Purity Alarm Settings
This screen is used for setting the purity value at which the
product water purity alarm will activate. The unit will alarm if this
level is passed but will not switch off the process. The alarm will
automatically clear if the water purity returns above its specified
limit.
1. PRESS SCROLL button to highlight appropriate box.
2. PRESS TICK  button.

Outlet Purity Alarm Setting Screen

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Step 9 - Temperature Alarm Setting

The temperature of the water is constantly monitored to ensure
that it does not increase to an unacceptable level. The
PURELAB Classic will alarm and switch the process off if the
alarm point is exceeded.
1. PRESS SCROLL button to highlight appropriate box.
Note: To operate the unit without a temperature
alarm PRESS SCROLL until no boxes are
highlighted. The unit will switch the process
mode off at 50°C to prevent damage.

Temperature Alarm Setting Screen 2. PRESS TICK  button.

Step 10 - Display Viewing Angle Adjustment

The angle of the display can be electronically adjusted up and
down to optimize the display graphics visibility.
1. ROTATE Dispense Controller slowly to adjust viewing
angle.
2. PRESS TICK  button.

Display Viewing Angle Adjustment

Step 11 - Auto-Restart
This allows the selection of the AUTO/MANUAL restart option. If
auto restart is selected the unit will automatically restart after a
temporary loss of power to the unit. In manual mode the unit will
remain in standby mode.
1. PRESS SCROLL button to highlight appropriate box.
2. PRESS TICK  button.

Auto-Restart Screen
Step 12 - Reservoir Level
When operating the system from a reservoir it is recommended
that a low-level switch be connected to protect the system from
running dry.
1. PRESS SCROLL button to highlight box, (if reservoir
and level control are attached).
2. PRESS TICK  button.
The Controller Set-up is now complete.
Note: To escape from any of the set-up screens
press the PROCESS button.

Reservoir Level Screen

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5.5 Setting Up Password / Resetting Replacement Timers

CAUTION! Before resetting any of the Consumable
Replacement/Reminder Dates, ensure
that the appropriate new Consumable
has been installed and correctly located
in the PURELAB Classic.

Step 1 - Enter Consumable Replacement Timer Set-up

1. SWITCH OFF at power inlet module.
2. PRESS and HOLD left hand button and SWITCH unit
back on. The unit will now enter the Consumable Timer
set up display.
3. RELEASE left hand button.

Step 2 - Password Change

Note: If you do not wish to change password then
proceed to instruction 4.
1. ROTATE Dispense Controller to enter password code.
The default password is 000.
2. PRESS Dispense Controller once.
3. ROTATE Dispense Controller to enter new password.
4. PRESS TICK  button to accept new password.
Password Screen
Step 3 - Purification Pack Replacement Date
The replacement date for Purification Packs is automatically
calculated from information held on data tags secured to the
pack. The information displayed confirms the replacement
dates and the serial numbers of the packs that have been
installed.
Note: At this stage the unit will not have been fitted
with any Purification Packs and the date
displayed will not be relevant. Upon
installation of the packs this date will be
changed and reconfirmed.
1. PRESS TICK  button.

Step 4 - UV Lamp Replacement Date (if fitted)

1. PRESS RESET button to reset UV Replacement
Date
OR
PRESS TICK  button to accept Replacement Date
and proceed to Filter Replacement.
2. PRESS TICK  button to confirm that resetting is
required
OR

PRESS CROSS  button to abort reset.

3. PRESS TICK  button.

UV Lamp Replacement Date Screens

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Step 5 - UF Replacement Date (if fitted)

1. PRESS RESET button to reset the Filter
Replacement Date
OR
PRESS TICK  button to accept Replacement Date
and proceed to Sanitization Reminder.
2. PRESS TICK  button to confirm that resetting is
required
OR

PRESS CROSS  button to abort reset.

3. PRESS TICK button.

UF Replacement Date Screens

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5.6 Initial Start Up

By-pass block
Step 1 - Prepare Water Supply
1. The PURELAB Classic should be installed correctly as
described in Section 5.3.
2. TURN ON the feedwater supply to the unit and adjust
the inlet pressure.
3. CHECK all tube connections are watertight and that
there are no leaks.

Step 2 - Prepare By-pass Block

1. OPEN front door.
2. CHECK by-pass block is correctly located and locked in
place.
3. CLOSE door.
CAUTION! Unit contains trace levels of
preservatives used during the
By-pass block hanger
manufacturing. Rinse to drain to avoid
Location of By-pass Block system contamination.

Step 3 - Initial Rinse

1. Connect a temporary tube from the dispense outlet to a
suitable drain or sink.
2. SWITCH ON electrical supply.
3. Press the dispense controller. The unit will
automatically go into a rinse procedure (36 mins) to
rinse the unit. This rinse must be completed; the
process function will be inhibited until the rinse is
complete.
4. Upon completion of the rinse the unit will bleep.
Initial Rinse Screen
Step 4 - Remove By-pass Block
1. SWITCH OFF power.
2. OPEN the door.
3. REMOVE by-pass block and pour contents away.
4. STORE by-pass block on hanger inside the door.
CAUTION! Before installing the purification pack,
ensure the correct date has been set as
described in Section 5.4 step 4 - Date.
Failure to enter the correct date may
result in premature replacement of the
Purification Packs.

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Retainer Spigots
Step 5 - Fit Purification Pack
1. REMOVE a new Purification Pack from its packaging.
2. REMOVE the sealing plugs from inlet and outlet ports.
3. WET ‘O’ rings and SLIDE new Purification Pack into the
right hand position pushing upwards against pack
reader contacts.
4. POSITION Purification Pack onto spigots.
5. PUSH into unit.
6. ENSURE that the Purification Pack is fully engaged and
dropped down past the retainers.

Fit Purification Pack

Step 6 - Acceptance of Purification Pack Installation

1. SWITCH ON power.
2. PRESS TICK  button to accept the Purification Pack.
3. PRESS TICK  button to calculate replacement date.

Step 7 - Final Rinse/Air Bleed

Purification Pack Installation Screens 1. PRESS PROCESS button and ALLOW the process
screen to appear.
2. PRESS Dispense Controller. DIRECT dispense flow to
drain or collect in suitable container (±10 litres).
3. ROTATE Dispense Controller and INCREASE the
dispense rate to maximum.
Note: The unit will start and initially during this stage
air/water will be purged from the unit via the
dispenser and the drain line.
4. ALLOW to dispense for 4 minutes.
5. RELEASE air from UF (UV) by carefully opening the
valve located near the top of the UF if fitted.
6. PRESS Dispense Controller to stop dispense.

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Step 8 - Normal Operation

Once product water quality is of a suitable standard it can be
used, although it will usually require intermittent recirculation
overnight to achieve peak quality.

Normal Operation Screen

5.7 POU Filter Installation (LC134) – Optional Accessory

Dispense Point
The POU filter is necessary with the PURELAB Classic DI and
Classic UV if they are required to meet the specification for
particles and bacteria.
The remainders of the range all incorporate internal filtration
and do not require a POU filter to achieve specification when
operated as described in this manual. However, a POU may be
used to achieve additional laboratory-specific application
requirements.

Step 1 - POU Filter Installation

1. LOCATE the fixed dispense point and UNSCREW the
nozzle.
2. ENSURE 'O' ring seal is still properly located.

Step 2 - Replace POU Filter

1. REMOVE new filter from its packaging.
2. SCREW filter hand tight into the fixed dispenser until
resistance against the 'O' ring seal is felt.
CAUTION! Do not over-tighten.
Point-of-use filter

Location of POU Filter

3. PUSH clear bell cover supplied with the filter onto the
outlet of filter.

Step 3 - Bleed POU Filter

1. SWITCH on the PURELAB Classic.
2. PRESS PROCESS button.
3. PLACE a beaker under the dispenser.
4. PRESS Dispense Controller button.
5. SLACKEN the top air bleed valve until water pours from
the bleed valve then close.
6. DISPENSE at full flow for about 5 minutes.
7. DISCARD water.

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6. OPERATION

The PURELAB Classic units have the following modes of operation:

 Intermittent Recirculation
 Manual Dispense
 Sanitization Cycle (See Section 8 - Sanitization Procedure)

6.1 Intermittent Recirculation

The PURELAB Classic intermittently recirculates internally to
maintain water quality It will circulate the water for 5 minutes every 60
minutes in whisper mode.
After dispense the unit will continue to recirculate for a short period
before returning to the intermittent routine.
CAUTION! If the PROCESS button is double
clicked the unit will switch off. To
maintain water quality the unit should
be left switched "on".

6.2 Manual Dispense

Step 1 - Product Quality
1. ENSURE PURELAB Classic is in process mode and
the water quality is satisfactory.

Step 2 - Dispense
1. PRESS Dispense Controller once.
2. ROTATE Dispense Controller clockwise.
3. ADJUST the flow from the unit by rotating the Dispense
Controller as necessary.
4. PRESS Dispense Controller once to stop dispensing
Manual Dispense Screen and return to recirculation mode.

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7. MAINTENANCE

Any maintenance work not detailed in this handbook should be carried

out by an approved supplier or distributor. If further information is
required on any aspect of maintenance please contact Customer
Service.
WARNING! ALWAYS CHECK THAT THE MAINS
ELECTRICAL POWER AND FEED
WATER SUPPLIES ARE SWITCHED
OFF BEFORE ATTEMPTING TO
CHANGE A CONSUMABLE ITEM.
7.1 Replacing the Purification Pack (LC186)
The Purification Pack should be replaced in the following
circumstances:
 The quality monitor indicates that the pack requires
changing.
 If the system is being e-commissioned or sanitized after an
extended period during which it was not used.
 If the pack has exceeded 12 months use as indicated by the
consumable reminder alarm.

Step 1 - Switch Unit Off

1. SWITCH OFF PURELAB Classic at the power inlet
module.
2. ISOLATE inlet water supply.
Purification
Pack 3. REMOVE POU filter, if fitted.
Location of Purification Pack 4. OPEN the front door.

Top Cap Step 2 - Fit New Purification Pack

1. REMOVE a new Purification Pack from its packaging.
2. REMOVE the sealing plugs from inlet and outlet port.
3. WET ‘O’ rings and SLIDE new Purification Pack into the
right hand position.
4. POSITION Purification Pack onto spigots.
5. PUSH into unit.
6. ENSURE that the Purification Pack is fully engaged and
dropped down past the pack retainers.

Removal of Purification Pack

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Step 3 - Acceptance of Purification Pack Installation

1. SWITCH ON power.
2. PRESS TICK  button to accept the Purification Pack.
3. PRESS TICK  button to calculate Replacement date.

Step 4 - Rinse Purification Packs

1. POSITION a container under the dispense outlet.
2. PRESS PROCESS button.
The unit will start.
3. PRESS the Dispense Controller.
Note: The unit will start and initially, during this
Purification Pack Installation Screen stage, air/water will be purged from the unit.
4. DISPENSE water for 5 minutes. Empty the container as
necessary.
5. PRESS the Dispense Controller to stop dispense and
return the unit to recirculation.

7.2 Replacing the Ultrafilter (LC169)

The Ultrafilter (UF) should be replaced in the following circumstances:
 If indicated by the consumable reminder alarm.
 When low pyrogen levels can no longer be maintained.
 When the required flow rate can no longer be maintained.

Step 1 - Switch Unit Off

1. SWITCH OFF PURELAB Classic at the power inlet
module.
2. TURN OFF the water supply.
3. REMOVE POU filter, if fitted.
4. OPEN the front door.

Step 2 - Remove Purification Pack

1. SEE Section 7.1 (Step 3).
2. INSERT By-pass block.
Ultrafilter

Location of Ultrafilter Step 3 - Remove the UV

1. See Section 7.4 (Step 2).

Step 4 - Remove the UF

1. UNCLIP UF from spring clips.
2. PULL UF forward to allow access to rear connection.
3. PUSH back outer sleeve of quick connect coupling.
4. UNSCREW bottom cap from UF housing.
5. LOCATE a suitable beaker under the UF.
6. UNSCREW the top cap from the UF housing and allow
the water to drain into the beaker.
7. REMOVE the UF from the PURELAB Classic.
8. DRY spilt water from inside the unit.
Ultrafilter LC169

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Step 5 - Ready New UF

1. UNPACK new Ultrafilter.
2. REMOVE the top and bottom brown caps and discard.

Step 6 - Fit New UF

1. REFIT top and bottom connectors to new UF ensuring
the ‘O’ rings are correctly located at each end.
2. RECONNECT quick connect coupling.
CAUTION! Ensure tubes are fitted to correct
ports.

3. CLIP the new UF into spring clips.

4. REFIT the UV housing on securing screws.
5. TIGHTEN securing screws.

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Step 7 - Replace the UV

1. See Section 7.4 (Step 5).

Step 8 - Rinse New UF

CAUTION! The new Ultra Filter must be rinsed. To
rinse the unit enter the Sanitizing
Procedure. Ensure the by-pass block is
correctly fitted.
1. SWITCH ON power. The unit will enter sanitization
mode. The insert tablet icon will appear, PRESS TICK
 to continue.The sanitization recirculation icon will
appear, press tick to continue. The unit will begin a 10
minute recirculation.
2. Once the cycle has been completed, the unit will display
“open flush valve” indicating that the manual flush
valve should be opened.
3. CONNECT a temporary tube from the dispense outlet
to a suitable drain or sink.
4. OPEN the flush valve and press the dispense knob, the
system will begin its flush sequence.
5. After approximately 3 minutes (countdown is indicated
on the display), the unit will sound a buzzer and stop.
The unit will display “close flush valve” indicating that
the flush valve should be closed.
6. CLOSE the flush valve and press the dispense knob,
the system will begin its rinse sequence.
7. Upon completion of the rinse sequence, the “open flush
valve” icon will appear again. OPEN the flush valve
and PRESS the dispense knob to start the 3:00 flush
sequence again.
8. Once this has been completed, the “close flush valve”
icon will appear again. CLOSE the flush valve and
PRESS the dispense knob to continue. The flush is
then complete after a 5 second flush to drain.
9. Ignore the prompt to reset the sanitization date, PRESS
TICK  button.

Step 9 - Set UF Change Reminder

1. See Section 5.5 - Setting Up Password/Replacement
Timers.

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7.3 Replacing the Ultraviolet Lamp (LC170)

The UV lamp should be replaced in the following circumstances:
 If indicated by the consumable reminder alarm, after 12
months use, to avoid the decline in the short wave radiation
used to destroy the micro-organisms and to oxidize
organics.
 If Lamp Fail Alarm occurs repeatedly.

Step 1 - Switch Unit Off

1. SWITCH OFF PURELAB Classic at the power inlet
module.
2. TURN OFF the water supply.
3. REMOVE POU filter, if fitted.
Ultraviolet lamp 4. OPEN the front door.

Location of Ultraviolet Lamp

Step 2 - Remove UV from PURELAB Classic
1. LOOSEN two securing screws, which retain UV
housing.
2. LIFT and REMOVE UV housing from the securing
screws.
3. REMOVE top and bottom retaining clips.
4. UNPLUG the white lamp holder fitted to the bottom of
the UV unit.
CAUTION! Hold on to the pins on the lamp in case it
falls out and breaks.

Step 3 - Remove Lamp Plates (LC170)

1. UNDO screws in plate at top.
2. REMOVE plate at top.
3. UNDO screws in plate at bottom.
4. REMOVE plate at bottom.
5. REMOVE ‘O’ rings from the UV lamp and retain.

Retaining clip CAUTION! Hold on to UV lamp whilst removing

plates to ensure it does not fall out and
break.
White lamp
holder
Step 4 - Remove UV Lamp (LC170)
Screws
1. REMOVE old UV lamp from the centre bore of the
Top plate housing.
O ring
2. Step 5 - Replace UV Lamp (LC170).
Lamp
1. UNPACK new UV lamp.

Stainless steel
CAUTION! Take care not to touch the surface of
chamber the glass. Ideally wear gloves, handle
with soft cloth and wipe the surface
with alcohol before fitting into the
housing.
1. SLIDE the new UV lamp into the center bore of the UV
LC170 Lamp
housing.
2. Note orientation of pins on each end.

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Step 6 - Replace Lamp Plates (LC170)

1. REPLACE ‘O’ rings on the end of the UV lamp.
2. PUSH ‘O’ rings into recesses.
3. REFIT plate on the bottom of the unit.
4. TIGHTEN screws on the plate.
5. FIT plate on top of UV lamp assembly.
6. TIGHTEN screws on top plate.

Step 7 - Assemble UV (LC170)

1. PLUG the white lamp clip into the bottom of the UV unit.
2. REFIT spring clip.
3. PLUG in the white lamp clip into the top of the UV unit.
4. REFIT spring clip.
5. REFIT the UV housing on securing screws.
6. TIGHTEN securing screws.

Step 8 - Set UV Change Reminder

1. See Section 5.5 - Setting Up Password/Resetting
Replacement Timers.

7.4 Replacing the Point-Of-Use Filter (LC134)

Step 1 - Remove POU Filter

1. UNSCREW the old filter from the fixed dispenser and
discard.
2. ENSURE ‘O’ ring seal is still properly located.
3. RINSE connection with IPA or ethanol. Dispense water
from the unit for several minutes to flush connection.

Step 2 - Replace POU Filter

1. REMOVE new filter from its packaging.
2. SCREW filter hand tight into the fixed dispenser until
resistance against the ‘O’ ring seal is felt.
CAUTION! Do not over-tighten.
Point-of-use filter

Location of POU Filter 3. PUSH clear bell cover supplied with the filter onto the
outlet of filter.

Step 3 - Bleed POU Filter

1. SWITCH ON the PURELAB Classic.
2. PRESS process.
3. PLACE a beaker under the dispenser.
4. PRESS Dispense Controller button.
5. SLACKEN the top air bleed valve until water pours from
the bleed valve then close.
6. DISPENSE at full flow for about 5 minutes.
7. DISCARD water.
8. Cleaning the Inlet Strainer (External)

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The Inlet Strainer should be checked and cleaned every six months to
ensure that the strainer does not become clogged.

7.5 Cleaning Inlet Strainer

Step 1 - Remove the Inlet Strainer

1. SWITCH OFF electrical supply.
2. ISOLATE inlet water supply.
3. HOLD inlet strainer over a sink or receptacle.
4. DEPRESS collars on both sides of strainer and
disconnect tubing.

Inlet Strainer 5. REMOVE the inlet strainer from its position.

Step 2 - Dismantle the Inlet Strainer

1. HOLD inlet strainer over a sink or receptacle.
2. UNSCREW inlet strainer.
3. REMOVE mesh filter.
4. CHECK mesh filter for signs of wear or damage,
replace or clean as necessary.

Step 3 - Reassemble the Inlet Strainer

1. INSERT mesh filter into strainer, ENSURE it is facing
the correct direction (see diagram).
2. RE-ASSEMBLE the inlet strainer.

Step 4 - Replace the Inlet Strainer

1. REPOSITION the inlet strainer.
2. REFIT tubes to inlet strainer, ENSURE it is facing the
correct direction.
3. RE-ESTABLISH inlet water supply.
4. SWITCH ON power.

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8. SANITIZATION PROCEDURES

The unit is sanitized to destroy the bacteria within the pipework, and
the filters of the unit. Please read this entire section to become familiar
with the procedure before you start. Sanitization may be required in
the following circumstances:
 If the unit has not been used for a prolonged period of time
 If the product water is used for particularly stringent
applications
The components and chemicals required to cmplete the sanitization
are not upllied with the product. Please contact your local distributor or
reseller for further details.

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9. TROUBLE SHOOTING

This section highlights the problems that could occur with the
PURELAB Classic unit and how to rectify them. The unit will normally
sound an alarm and the respective icons will flash. The alarm sound
can be silenced by pressing the mute button. If the problem cannot be
solved using this manual, please call either your supplier or the local
ELGA LabWater distributor. (See Section 13.0 - Useful Addresses).

Problems Action
No display message Check mains supply and lead.
Check that the mains power is switched on.
Check fuses in power inlet module and replace if blown.
Alarm and Flashing Mute alarm. Check alarm set value is correct.
Quality value See Section 5.4 Step 8 - Purity Alarm Settings.
Dispense approximately 10 liters of water to drain.
Check UF if fitted.
If problem persists replace purification pack.
See Section 7.1 - Replacing the Purification Packs.
If problem persists call Customer Services.
=== M.cm Feature out of measurement range. Allow unit to recirculate.
Replace Purification Packs.
See Section 7.1 - Replacing the Purification Packs.
If problem persists call Customer Services.
High Water Check correct alarm point is set.
Temperature alarm See Section 5.4 Step 10 - Temperature Alarm Setting.
Check feedwater temperature has not risen suddenly.
Dispense some water to allow cold water to be drawn into
the unit.
Purification Pack Mute Alarm. Replace Purification Pack.
Change reminder See section 7.1 - Replacing a Purification pack.
alarm
UF Change Mute Alarm. Replace UF filter.
reminder alarm See section 7.3 - Replacing the UF filter.
UV Change Mute Alarm. Replace UV filter.
reminder alarm See section 7.4 - Replacing the UV Lamp.
Sanitization Mute alarm. Contact your local reseller or distributor.
reminder alarm See Section 8 - Sanitization Procedure.
Reservoir Low level Mute Alarm. Ensure unit is fed from a reservoir and that the
alarm correct feature has been set. See Section 5.4 Step 15 -
Fuse Removal Reservoir Level.
Check feed to the reservoir is operational and that the
reservoir is filling.
Reservoir level Mute alarm. Ensure control lead from reservoir is properly
disconnect fault connected. Note: unit must be powered down to clear alarm.
alarm
Reduced flow from Check inlet water strainer. Replace POU filter or Replace UF
dispenser if fitted.
Pump worn, call Customer Services.
Unit Noisy Open front door and secure pipework to stop vibration.
Unit will not operate Ensure that the correct Purification Pack is correctly
installed.
Ensure Purification Pack has a valid consumable date and
that the reminder has not been overrun by 12 months.

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10. CONSUMABLES AND

ACCESSORIES

Consumable Max. Max.

Service Life* Shelf Life
LC186 Purification Pack - RO Feed 12 months 2 years
LC169 UF 24 months 2 years
LC170 UV Lamp 185 12 months 5 years
LC134 POU Filter 6 months 5 years
LC136** (Composite Vent Filter) 6 months 2 years

* Service life is an estimate only, and will

depend on the application and feed water
quality. Care should be taken to order the
correct consumable items.
** Required for reservoirs (LA611, LA612,
LA613, LA620).

Accessory Cat No
Installation kit LA642
Pressure regulator valve (feedwater pressures LA652
>0.7 bar (10 psi) but <4 bar (60 psi)
Pressure regulator valve (feedwater pressures LA575
>4 bar (60 psi)
Wall mounting kit (PURELAB Classic unit) LA610
Wall mounting kit US version LA622
25 liter reservoir LA611
40 liter reservoir LA612
75 liter reservoir LA613
Wall mounting kit (25 & 40 liter reservoir) LA591
Wall mounting kit (75 liter reservoir) LA592
RS232 printer kit LA618
Ultra and Classic remote control station LA645
Integral dispense gun LA644
Docking vessel - DV35 LA620

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11. KEY TO CONTROL PANEL

11.1 Icons
Icon Description

Mute Alarm

Accept

Scroll

Auto Restart

Manual Restart

Set Up Menu

Cursor Option Choice

Cursor Selection Choice

Cancel

Reset

Printer

Intermittent Recirculation

Replacement Date

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11.2 Alarm Conditions

Icon Alarm Conditions

UV Lamp Failure

(Flashing)

Bypass fitted - warning

(Flashing)

Purification Pack not in place

(Flashing)

Reinstall Purification Pack

(Flashing)

Clock stopped

(Flashing)

Reservoir Level - Disconnect Fault

(Flashing)

Incorrect Password

(Flashing)

Open UF Flush Valve

(Flashing)

Closed UF Flush Valve

(Flashing)

11.3 Replacement Timers

Icon Replacement Timer Preset

UV Lamp Replacement 1 year

Purification Pack 12 months

Replacement

Filter Replacement UF - 2 years

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11.4 Quality Alarms

Screen Description
Outlet Purity Alarm

Temperature Alarm

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12. WARRANTY/CONDITIONS OF SALE

ELGA LabWater is a trading name of VWS (UK) Ltd.

General Limited Warranty

VWS (UK) Ltd warrants the products manufactured by it against
defects in materials and workmanship when used in
accordance with applicable instructions for a period of one year
from the date of shipment for the products. VWS (UK) LTD
MAKES NO OTHER WARRANTY, EXPRESSED OR IMPLIED.
THERE IS NO WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. The warranty
provided herein and the data, specifications and descriptions of
the VWS (UK) Ltd products appearing in VWS (UK) Ltd’s
published catalogues and product literature may not be altered
except by express written agreement signed by an officer of
VWS (UK) Ltd. Representations, oral or written, which are
inconsistent with this warranty or such publications are not
authorized and, if given, should not be relied upon.
In the event of a breach of the foregoing warranty, VWS (UK)
Ltd sole obligation shall be to repair or replace, at its option, any
product or part thereof that proves to be defective in materials
or workmanship within the warranty period, provided the
customer notifies VWS (UK) Ltd promptly of any such defect.
The exclusive remedy provided herein shall not be deemed to
have failed of its essential purpose so long as VWS (UK) Ltd is
willing and able to repair or replace any nonconforming VWS
(UK) Ltd product or part. VWS (UK) Ltd shall not be liable for
consequential, incidental, special or any other indirect damages
resulting from economic loss or property damage sustained by
any customer from the use of its products.

Water System Limited Warranty

VWS (UK) Ltd warrants the water systems manufactured by it,
BUT EXCLUDING MEMBRANES AND PURIFICATION
PACKS, against defects in materials and workmanship when
used in accordance with the applicable instructions and within
the operating conditions specified for the systems for a period
of one year from the earlier of:
a) the date of installation, or
b) the 120th day following the date of shipment.
VWS (UK) LTD MAKES NO OTHER WARRANTY,
EXPRESSED OR IMPLIED. THERE IS NO WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. The warranty provided herein and the data,
specifications and descriptions of the VWS (UK) Ltd systems
appearing in VWS (UK) Ltd published catalogues and product
literature may not be altered except by express written
agreement signed by an officer of VWS (UK) Ltd.
Representations, oral or written, which are inconsistent with this
warranty or such publications are not authorised and, if given,
should not be relied upon.

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In the event of a breach of the foregoing warranty, VWS (UK)

Ltd sole obligation shall be to repair or replace, at its option, any
product or part thereof that proves to be defective in materials
or workmanship within the warranty period, provided the
customer notifies VWS (UK) Ltd promptly of any such defect.
The cost of labor for the first ninety (90) days of the above
warranty period is included in the warranty; thereafter, labor
cost shall be at the customer’s expense. The exclusive remedy
provided herein shall not be deemed to have failed of its
essential purpose so long as VWS (UK) Ltd is willing and able
to repair or replace any nonconforming VWS (UK) Ltd system or
component part. VWS (UK) Ltd shall not be liable for
consequential, incidental, special or any other indirect damages
resulting from economic loss or property damage sustained by
any customer from the use of its process systems.
Products or components manufactured by companies other
than VWS (UK) Ltd or its affiliates (“Non- VWS (UK) Ltd
products”) are covered by the warranty, if any, extended by the
Product manufacturer. VWS (UK) Ltd hereby assigns to the
purchaser any such warranty; however, VWS (UK) LTD
EXPRESSLY DISCLAIMS ANY WARRANTY WHETHER
EXPRESSED OR IMPLIED, THAT THE NON - VWS (UK) LTD
PRODUCTS ARE MERCHANTABLE OR FIT FOR A
PARTICULAR PURPOSE.
NOTICE
VWS (UK) Ltd is constantly striving to improve its products and
services. Consequently, the information in this document is
subject to change without notice and should not be construed
as a commitment by VWS (UK) Ltd. Also, VWS (UK) Ltd
assumes no responsibility for any errors that may appear in this
document. This manual is believed to be complete and accurate
at the time of publication. In no event shall VWS (UK) Ltd be
liable for incidental or consequential damages in connection
with or arising from the use of this manual.
VWS (UK) Ltd. warrants its products against defects in
materials and workmanship as described in the Warranty
statement on the preceding pages.

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13. USEFUL CONTACT DETAILS

ELGA LabWater
Lane End Industrial Park
High Wycombe
Bucks
HP14 3BY
UK

Tel: +44 (0) 0203 567 7300

Fax: +44 (0) 0203 567 7205
E-mail: techsupport@elgalabwater.com
For the address of your nearest ELGA LabWater Sales and
Service office visit the country list on our website

http://www.elgalabwater.com

or contact ELGA at the number above.

ELGA® is the global laboratory water brand name of Veolia Water.
ELGA®, PURELAB®, MEDICA® and CENTRA® are trademarks of
ELGA LabWater.

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