RLS Wacon LIMES PLUS Manuel utilisateur

Safety reliably produced.

Operating instructions

LIMES

Hardness control device for automated monitoring

of total hardness in the process water

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Subject to change without notice

 
 
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Subject to change without notice 
 
3 
Foreword 5 
General 6 
Brief description .......................................................................................................................................................................................... 6 
Scope of delivery ....................................................................................................................................................................................... 6 
Overview: LIMESBase and LIMESPlus.................................................................................................................................................. 8 
Safety instructions and symbols used ................................................................................................................................................... 9 
Transport..................................................................................................................................................................................................... 9 
Storage......................................................................................................................................................................................................... 9 
Disposal note.............................................................................................................................................................................................. 9 
Performance features 10 
Specifications 12 
General specifications.............................................................................................................................................................................12 
Signal input and outputs ........................................................................................................................................................................12 
Technical data ..........................................................................................................................................................................................13 
Analysis properties..................................................................................................................................................................................13 
Maintenance intervals ............................................................................................................................................................................13 
Installation 14 
Installation requirements .......................................................................................................................................................................14 
Wall mounting LIMES.............................................................................................................................................................................15 
Wall-mounted junction box (optional) ................................................................................................................................................16 
Establish supply line to the sample water and to the canal ............................................................................................................17 
Device overview 18 
Displays and front panel ........................................................................................................................................................................20 
Overview of the configuration elements............................................................................................................................................21 
Upgrade Kit from LIMESBase to LIMESPlus......................................................................................................................................21 
Electrical installation 22 
Overview of the electrical connections (main board): .....................................................................................................................22 
Overview of the electrical connections (cables): ..............................................................................................................................24 
Overview of the electrical connections (junction box): ...................................................................................................................25 
Establishing the supply voltage (with junction box): ........................................................................................................................26 
Establishing the supply voltage (without junction box): ..................................................................................................................26 
Connecting the relay outputs................................................................................................................................................................27 
Connection input contact ......................................................................................................................................................................29 
Wiring example 1: Connection to control room (LIMESPlus only)................................................................................................30 
Wiring example 2: Connection to a reverse osmosis system (connection potential free switch, LIMESPlus) .....................31 
Wiring Example 3: Connection to external control (LIMESPlus only) ..........................................................................................32 
Wiring example 4 and 5: Input contact INPUT (LIMESPlus only)..................................................................................................33 
Wiring Example 6: LIMESBase..............................................................................................................................................................34 
Operation and handling 35 
Key functions ...........................................................................................................................................................................................35 
Operating principle..................................................................................................................................................................................36 
Analysis process.......................................................................................................................................................................................36 
Before commissioning ............................................................................................................................................................................38 
Device settings.........................................................................................................................................................................................39 
Setting the flushing time LIMESPlus....................................................................................................................................................40 
Setting the flushing time LIMESBase ..................................................................................................................................................40 
Analysis interval LIMESPlus depending on the input contact INPUT...........................................................................................41 
Analysis interval LIMESBase .................................................................................................................................................................42 
Input contact LIMESPlus (INPUT, start or stop analysis interval)..................................................................................................42 
Input contact LIMESBase.......................................................................................................................................................................44 
First value suppression...........................................................................................................................................................................45 
Trigger conditions for an analysis start ...............................................................................................................................................45 
Commissioning.........................................................................................................................................................................................46 
LED indicators ..........................................................................................................................................................................................47 
LED display reagent level.......................................................................................................................................................................51 
 
Content 

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Subject to change without notice

Maintenance and service 52

Inserting a full reagent bottle................................................................................................................................................................53

Install maintenance set / clean measuring chamber ........................................................................................................................54

Change peristaltic pump cash register ................................................................................................................................................55

Component exchange.............................................................................................................................................................................56

Diagnostic functions LIMESPlus...........................................................................................................................................................59

Diagnostic functions LIMESBase..........................................................................................................................................................64

Spare parts 65

Maintenance sets and accessories 67

Maintenance sets.....................................................................................................................................................................................67

Accessories ...............................................................................................................................................................................................68

Reagents 69

Reagents for monitoring total hardness .............................................................................................................................................69

Interesting facts about the reagents....................................................................................................................................................69

Troubleshooting 70

Notes 71

Appendix 72

Maintenance and service .......................................................................................................................................................................72

Setting en ..................................................................................................................................................................................................73

Document changes..................................................................................................................................................................................73

EU Declaration of Conformity 74

Content

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Subject to change without notice

Foreword

Thank you for purchasing a LIMES analyser for online monitoring of water hardness.

•The LIMES analyser for monitoring water quality is part of the water treatment plant.

•This manual is intended for the manufacturer and the operator of such a unit. It contains

instructions for the installation and operation of the unit.

•Please read this manual carefully before operating the unit.

•We recommend that you always keep the manual close at hand during operation.

•Operate the unit only in accordance with the instructions in this manual.

•Under no circumstances will we be liable for any damage caused by operating errors or

failure to follow the instructions in this manual.

•Some details and instructions in this manual may differ from your actual purchased unit.

We reserve the right to make technical changes without prior notice.

On our website www.rls-wacon.de you will always find the latest version of our documentation.

The LIMES analyser automatically detects hardness breakthroughs in a water treatment

system and issues a message when the limit value is exceeded. This message can be

used, for example, to trigger regeneration of the water softener.

The LIMES analyser is not a device that prevents hardness breakthroughs.

Conversion for the units of water hardness

°dH

°e

°fH

ppm

mval/l

mmol/l

German degrees

1 °dH =

1,253

1,78

17,8

0,357

0,1783

English degrees

1 °e =

0,798

1,43

14,3

0,285

0,142

French degrees

1 °fH =

0,56

0,702

0,2

0,1

ppm CaCO3(USA)

1 ppm =

0,056

0,07

0,1

0,02

0,01

mval/l Alkaline earth

ions

1 mval/l =

2,8

3,51

0,5

mmol/l Alkaline earth

ions

1 mmol/l =

5,6

7,02

100

The unit 1 ppm is used here contrary to the actual literal sense in the sense of 1 mg/l CaCO .3

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Subject to change without notice

General

Brief description

With the LIMES analyser, RLS Wacon offers a compact and very easy-to-use analyser for the

automatic online monitoring of water treatment plants.

The measuring device works on the principle of "limit value monitoring with colour change" and

provides all important functionalities for reliable field use.

The LIMES analyser automatically carries out water analyses at regular intervals to determine the

total hardness.

Based on the reagent type used, a limit value is specified by the user. There are 4 reagents

available for monitoring the total hardness.

If the limit value is exceeded, the unit outputs a message on a potential-free relay output. This

message can be further processed by a softening control. In this way, functions such as

automatic regeneration triggering can be realised.

The LIMES analyser is characterised by low maintenance costs. Up to 10,000 analyses can be

carried out with a 750 ml reagent bottle. The input contact of the device can additionally be

used to connect a flow monitor to the device. In this way, the LIMES interrupts the analysis

interval during downtimes of the water softener and automatically resumes the analysis when

the unit is put back into operation.

To prevent disturbances due to the counter ion effect, a first value suppression is available. If the

limit value is exceeded, this first carries out another control measurement before a hard water

message is issued.

You will find in-depth and much more information about your new LIMES analyser in this

manual.

Scope of delivery

The scope of delivery for a new unit includes the following items:

•LIMES analyser with 1.75m connection cables

•Operating instructions

Optional accessories:

•Front cover for analyser (transparent)

•Junction box (for electrical installation)

•LIMES connection set (for water supply)

•Stopcock

Further information on accessories can be found from page 65.

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Subject to change without notice

General

These operating instructions describe the installation and operation of the LIMES on-line

analyser. Installation and commissioning may only be carried out by an authorised specialist.

The unit may only be operated under the conditions described in these operating instructions.

The unit may only be used for the specified purpose. When installing and operating the analyser,

all locally applicable regulations (such as EN, DIN, VDE, UVV) must be observed.

The analyser is used for the automatic determination of the total water hardness in the process

water. Proper operation can only be guaranteed if the reagents and spare parts recommended by

us are used.

Changes to the electrical wiring and programming may only be carried out by a designated

specialist.

The water connection lines to the unit should be kept as short as possible and should not be laid

together with mains lines or in their immediate vicinity. In the vicinity of strong electromagnetic

radiators, interference with the analysis may occur; in this case, separate interference

suppression measures must be taken, in particular the EMC guidelines must be observed.

It is recommended to always have access to the analyser when familiarising oneself with the help

of these operating instructions in order to be able to understand the explained correlations and

functions immediately. Since certain areas build on each other, it makes sense to work through

the chapters in the given order.

If you have any questions about the use of the analyser, you will receive support from our

partners or from us. You can reach us by telephone during normal business hours or by e-mail.

The contact details of our technicians and our partners can be found on our website.

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Subject to change without notice

General

Quick overview: LIMESBase and LIMESPlus

LIMESBase

LIMESPlus

Parameters:

Limit value reagents Total hardness

0.1 / 0.5 / 3.0 / 7.0 °dH

Bottle size reagent

750 ml

Shelf-life reagent in months

Contacts:

Input contact

(INPUT, start or stop analysis interval)

Relay output 1

(Boundary value alarm)

Relay output 2

(Unit fault or reagent message BoB)

Functions:

Adjustable flushing time

Fixed 50 sec.

First value suppression

Adjustable analysis interval

Available analysis intervals

10 min

5 / 10 / 20 / 30 min

Diagnosis mode

Technical data:

IP protection class without front cover

IP43

IP protection class with optional front cover

IP54

Protection class

SKII

- Available

- Not available

For more information, see page 21 and 68.

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Subject to change without notice

Safety instructions and symbols used

In this operating manual you will find various safety instructions that point out possible risks

when handling the analyser. This concerns in detail dangers for

•People,

•this product or associated equipment and installations,

•the working environment.

Various symbols in these operating instructions indicate special dangers to prevent personal

injury and damage to the appliance. Please read the entire text completely before starting work.

This symbol draws your attention to useful tips that contribute to a better

understanding of the unit.

This symbol is a general warning that indicates circumstances that must be

observed.

Pressure

This symbol is a warning that you must expect pipes under pressure.

Irritant

This symbol indicates the danger of harmful as well as irritating chemicals.

Avoid direct skin contact.

Voltage

This symbol indicates the danger of electric current and the danger to persons

and electronic components and assemblies.

Transport

Immediately after receipt, check that the unit is complete and has no transport

damage. The analyser is delivered in a transport-safe condition. Nevertheless,

damage may occur during transport. Immediately inform the delivery person

of any transport damage.

Protect the analyser from possible damage during transport. Remove any

liquids still in it beforehand. Remove the reagent bottle and close it to prevent

the reagent from leaking.

Storage

Store the analyser in a dry place at temperatures between 0 - 45 °C and out of

direct sunlight.

Disposal notes

The appliance must not be disposed of with residual waste. Take the appliance to a collection

point.

Alternatively, you can return the analyser to your dealer or to us for disposal.

General

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Subject to change without notice

Performance features

Fully automatic

The unit detects hardness breakthroughs fully automatically when

the limit value of the reagent used is exceeded.

The analysis process is more reliable than manual methods and

more sustainable than other measurement methods. Compared to

swelling resin sensors or electrodes, no regeneration, calibration or

replacement of the sensor element is necessary.

Intelligent and self-sufficient

The device does not need to be calibrated. Due to the integrated

measurement technology and a two-stage analysis procedure with

zero-point measurement, external measurement influences due to

contamination of the measurement chamber, turbidity of the

sample and extraneous light influences is detected and eliminated

during the evaluation of the analysis.

The integrated full colour sensor is one of the central components

for the self-sufficient operation of the unit and does not need to be

maintained or replaced.

Selectable interval time (LIMESPlus)

The interval time between two measurements can be set in 4 steps:

Interval times of 5 / 10 / 20 / 30 minutes can be selected. The

analysis can also be started via an external switch or paused when

the system is at a standstill.

Self-calibrating

Hardness breakthroughs are reliably detected by using LHV limit

reagents. Our reagents are calibrated to a fixed limit value in

production. You choose the reagent to suit your requirements. No

further configuration or calibration is necessary.

First value suppression

After a bad measurement, a reference measurement is taken every

4 minutes to evaluate the result. This prevents false alarms due to

the counter ion effect after a system shutdown.

Extensive alarm functions

If the limit value is exceeded, an alarm is issued by switching a

potential-free relay. This alarm output can be connected to a

control room for signalling or used to activate a horn, close a valve

or control a programme for regeneration of a softening system.

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