10589A-Calcium-Magnésium 2000 Avec Refroidisseur

SERES Environnement

360, rue Louis de Broglie La Duranne BP 20087

13793 AIX EN PROVENCE Cedex 3 France

Tel : 33 (0)4 42 97 37 37 Fax : 33 (0)4 42 97 30 30

Email : [email protected] www.seres-france.com

Siret 490 619 319 00018 Socit en SAS au capital de 1.760.000 euros

R.C.S. AIX EN PCE 2006 B 1127 CODE NAF 2651B

CALCIUM MAGNESIUM

in brine method : colorimetry with cooler

serial n :

CALCIUM-MAGNESIUM COMMISSIONING AND MAINTENANCE MANUAL NT 10589 - Rev. B

CALCIUM-MAGNESIUM COMMISSIONING AND MAINTENANCE MANUAL NT 10589 - Rev. B Contents

SUMMARY

UPDATE SHEET

GENERALITIES CHAPTER 1

1. MEASURING PRINCIPLE 2. DESCRIPTION OF THE ANALYSER 3. DESCRIPTION OF THE SUB-ASSEMBLIES 4. TECHNICAL SPECIFICATIONS

INSTALLATION CHAPTER 2

1. LOCATION 2. ELECTRICAL CONNECTIONS 3. HYDRAULIC CONNECTIONS 4. FITTING THE MEASURING VESSEL 5. INSTALLATION DRAWINGS

COMMISSIONING AND UTILISATION CHAPTER 3

1. COMMISSIONING 2. PROGRAMMATION 3. USERS MENU LIST 4. INPUT/OUTPUT SIGNALS DATA LINK

MAINTENANCE CHAPTER 4

1. PREVENTIVE MAINTENANCE 2. CALIBRATION 3. REAGENTS AND SILICAGEL REPLACEMENT 4. PUMP TUBING REPLACEMENT 5. INSPECTION OF THE MEASURING VESSEL 6. BREAKDOWN HANDBOOK 7. DECOMMISSIONING


ANNEXE CHAPTER 5

1. INTERNAL HYDRAULIC DRAWING 2. SPECIAL CHARACTERISTICS 3. PROGRAMMING DIAGRAM 4. REAGENTS PREPARATION AND CONSUMPTION

SPARE PARTS CHAPTER 6


UPDATE SHEET

REV DATE PARAGRAPH MODIFICATION

26/06/1995 First edition

A 10/01/1996 The packet of silicagel is replaced by a silicagel cartridge Suppression of the air pump

B 11/02/1998 New teletransmission PC board W893.001

CALCIUM-MAGNESIUM COMMISSIONING AND MAINTENANCE MANUAL NT 10589 Rev. B Chapter 1

GENERALITIES

CHAPTER 1

Page

1. MEASURING PRINCIPLE .......................................................... 1/1

2. DESCRIPTION OF THE ANALYSER ......................................... 1/3

3. DESCRIPTION OF THE SUB-ASSEMBLIES ............................. 1/5

3.1. The electronic rack .............................................................................. 1/5 3.2. The 309 block ....................................................................................... 1/6 3.3. The measuring vessel ......................................................................... 1/9 3.4. The peristaltic pump ......................................................................... 1/11 3.5. The water failure ................................................................................ 1/11 3.6. The dry air generator ......................................................................... 1/12 3.7. The hydraulic panoply ...................................................................... 1/12

4. TECHNICAL SPECIFICATIONS ............................................... 1/13


Page 1/1

1. MEASURING PRINCIPLE

Chemical methods well known to all water-analysis laboratories enable detection of particular element present in traces in a given sample.

These methods enable development, in the presence of the appropriate reagents of a coloration, the intensity of which is proportional to the concentration of the element looked for.

For a method to be reproducible one must make sure :

- that no particles or air bubbles are in the chamber at measuring time that could by intercepting the pencil of rays distort the analysers response.

- that the volume of the sample and the volumes of the reagents stay constant at each cycle and well mixed.

- that the reagents be of good quality

- that the time between the injection of the reagents and the reading of the coloration intensity be constant at each cycle seeing that the development of the coloration continues to develop for a long time.

To avoid drifting, or to eliminate interference due for example to progressive clogging of the measuring chamber (that should be cleaned from time to time), an automatic zero is carried out during each cycle in the presence of the sample.


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2. DESCRIPTION OF THE ANALYSER

The analyser is supplied in the form of a wall-mounted cabinet with a door for access. This cabinet is divided into 2 compartments, the upper one for the electronics and the lower one for all the hydraulic part.

Management of the functions and operator dialogue is ensured by the microprocessor with which the analyser is equipped.

The micro-processor also enables management of a RS 232 current loop data link output which could be used to dialogue with a centralised data acquisition system.

If this data link is not used, ON/OFF contacts are available for transmission of set point passed alarms, malfunction alarms, and a 4-20 mA output is available.

The analyser has a 4-line alphanumeric display on the front panel.

The operator can dialogue with the microprocessor by means of sub-programmes called up via the keyboard.


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3. DESCRIPTION OF THE SUB-ASSEMBLIES OF THE ANALYSER

3.1. The electronic rack

The electronic rack houses the electronic printed circuit boards. Before putting the apparatus into service for the first time, check that the PC boards are well pushed into their respective connectors :

- PC board C1, at the far left, is the micro-processor board onto which the flat connectors for the display panel and for the 4 push-buttons are connected.

- PC board C2 is the analogical measurement board - Optional PC board C3 is the board that generates the 4-20 mA signals - Optional PC board C4, is the JBUS data processing board - PC board C5, second from the right, is the low voltage power supply PC board, on

which are located the fuses and the test points.

This PC board generates the following voltages :

+ 15 volts analogic 0 volt exterior - 15 volts analogic + 15 volts exterior 0 volt analogic + 30 volts exterior + 26 volts analogic 18 volts exterior (in certain cases) - 26 volts analogic + 5 volts logic 0 "

- PC board C6, at the far right, is the relay PC board. These relays control the pumps, the "309" distribution assembly, and other mechanical functions.

Before commissioning, the connections above the rack should also be checked.

C1 C2 C3 C4 C5 C6


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3.2. The "309" distribution assembly called "309 block"

The "309 block" is located in the hydraulic part of the equipment (bottom compartment).

Its role is to carry out the functions of filling, levelling, and drainage of the measuring chamber.

It is a distribution assembly comprising :

- a motor to drive the plexiglass selection" finger",

- a plexiglass distributor,

A. DISTRIBUTOR B. DISTRIBUTION FINGER C. DISTRIBUTION FINGER DRIVE MOTOR D. OPTICAL DETECTOR OF FINGER POSITION


Page 1/7

On the front of the distributor can be seen a curved line connected up points numbered from 1 to 4 corresponding to the positions that the distributor will successively occupy.

- Position n. 1 corresponds to the filling of the measurement chamber, - Position n. 2 corresponds to the drainage of the chamber - Position n.3 corresponds to the levelling off of the sample volume (constant volume

of sample). - Positions 0 and 4 correspond to "standby" times during which the sample is sent

directly to the waste.

During the measurement cycle, the distributor occupies successively positions 0 to 4 to carry out the functions of levelling and drainage of the measuring chamber.

Check that the connection tubes of the "309" assembly are correctly placed :

- the one bringing the de-ionised water must be connected to the hole in the front of the selection finger,

- the tubes connected to the 309 assembly are either directed to the waste*, or to the measuring chamber in accordance with the following drawing :

A pipe for overflow from the selection finger of the 309 assembly is connected behind it, the sample overflow going to the waste.

The flow rate of de-ionised water must be sufficient to supply the "water failure" alarm system and the overflow from the 309 selection finger.

* The drainage of the chamber can be connected to a separate waste collector as to avoid sending to the main waste collector the reagents that could be toxic. Please ask advice if necessary.

Draining

Levelling WASTE

Sample inlet

Valve for standard inlet (not used)

Filling (not used)


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Page 1/10

3.3. The measuring chamber

The measuring chamber in polypropylene is used for its resistance to corrosive products (reagents, samples and cleaning solutions).

On the measuring chamber are located :

- on the right side, the emitting diode, - on the left side, the measuring cell.

The chamber itself comprises :

- the polypropylene chamber,

- the two chamber windows and 2 reducers of optical path (6 mm) without optical lens (OPT121),

- the chamber's cover in polypropylene onto which the reagent tappings are fitted,

- the magnetic stirrer and the magnetic stirrer bar are on the bottom of this chamber

The windows enable the passage of light from the diode to the cell through the sample.

To avoid condensation on the outside of the measuring chamber window, the air is dried by 2 silicagel cartridges, one of which is mounted inside the emitting diode block, the other inside the measuring cell block.

The measuring chamber has been designed to contain a constant volume of sample to be analysed.

The sample inlet is at the back, right hand side of the chamber, the overflow and levelling outlets are at the top, the sample outlet at the back left hand side.

A magnetic bar glued on to the motor axis, placed underneath the chamber, and not in direct contact with it, drives a stirrer which ensures the homogenisation of the sample and of the reagents inside the chamber.


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3.4. The pumps

SERES micro-pumps have been used for over twenty years, and work perfectly well for low flow rates. Their applications are both in the laboratory and for any other problem of reagent injection. Their reproducibility is of a very high standard.

SERES micro-pumps are of the peristaltic type. The principle is based on the compression of the tube : these pumps are volumetric. The type of tubing chosen is resistant to attacks from most types of chemical product.

The micro-pumps inject the necessary volume of a reagent with excellent reproducibility into the measurement chamber so as to obtain the required chemical reagent.

The pumps are delivered fitted inside the equipment. They are identified from the left to the right with P1 to P6.

The pumps must be primed before carrying out the first analysis. They draw up the reagent from the bottle towards their inlet (on the left hand side) and discharge it at their outlet (on the right hand side) to the measuring chamber (small tapping at the back).

In the list of spare parts and the annexes, a pump is defined as follows :

e.g 2 x 15T/15A

i.e 2 pump bodies (2)

15 rpm motor (15T)

Body type (15)

Self-supplied (A)

Principally there are 2 types of pump bodies, type 15 and type 32. A self-supplied pump will make complete runs so as to inject constant reagent volumes whereas a pump that is not self-supplied will stop immediately after a time signal given by the software.

3.5. Water sample failure

A small sensor of air pressure sensor tests the presence or absence of water on the distributor 309.

It is the pressure of the volume of the air inside the tube linking the sensor to the T that closes the contact. In the absence of water, the pressure falls down and the contact opens.


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3.6. The air dryer generator

To avoid condensation on the outside of the windows or on the mesuring cells, air is dried by 2 silicagel cartridges, one of which is mounted inside the emitting diode block, the other is inside the measuring cell block.

3.7. Hydraulic panoply (sampling)

The hydraulic panoply consists of a panel on which are mounted :

1 cooler

1 electrical box

1 flow rate detector

and 2 solenoid valves

The hydraulic panel is an autonomous device, the sampling system is self controlled by the electrical boxes.

The single electric connection between the panoply and the analyser is for sample flow rate failure detection, permitting the analyser to carry out an automatic cleaning cycle.

The continuous cooling of the hot sample is not possible due to the low heat transfer of the cooler material, therefore a cyclic sampling has been perfected.


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2. TECHNICAL SPECIFICATIONS

Sample characteristics : - Clean and limpid - Filtered if necessary - Flow rate : 4 l/h - Pressure : 3 bars maximum - Tank temperature : 40C max - Sampling panel temperature : 80 C max

Connections for the sample : - inlet : 1/4 BSP female with flow-adjustment valve

- outlet to waste

Connections for distilled water : - inlet : 40 l/h to surge chamber - outlet to waste

Duration of a measurement cycle : 500 sec.

Reproducibility : around + 1 to 2 % of the full scale

Installation : protected from weather conditions, damp and dust, at a temperature between 5 and 40C.

Electrical connections : Cable glands on the right hand side of the cabinet, to the electrical terminal blocks.

Output signals : - 4 - 20 mA into 800 ohms / galvanic isolation - Current loop numeric signals - 9600 baud - ON/OFF contacts 1 A / 24 V

Electrical power supply : 220 V - 50/60 Hz (+10% -15%) (other voltage on request)

Consumption : 250 W

Cabinet : Steel, epoxy finish : 750 x 600 x 400 mm, divided into 2 compartments :

- the upper one for the electronics and the terminal blocks,

- the lower one for the hydraulic part

IP55 protection Front door with 2 key locks

Total weight : around 60 kg

The reagents can be housed inside the analyser (up to 4 off 2-litre bottles) or preferably, outside the cabinet on a shelf put at the analyser's floor level.


Page 1/14


INSTALLATION

CHAPTER 2

Page

1. LOCATION ................................................................................. 2/1

2. ELECTRIC CONNECTIONS ....................................................... 2/1

3. HYDRAULIC CONNECTIONS .................................................... 2/2

4. FITTING THE MEASURING VESSEL ......................................... 2/2

5. INSTALLATION DRAWINGS ..................................................... 2/3


Page 2/1

1. LOCATION

The equipment must be fitted in a room that is sufficiently aired, away from damp and dust and at a temperature of between 5 and 40C. It is fitted in a vertical wall or panel by 4 fixing lugs and if possible at eye level so as to make maintenance operations easier - refer to installation drawings at the end of this manual.

The installation must include :

- beneath the analyser, or preferably on the left hand side, a shelf on which the reagent bottles may be placed. Storage inside the analyser, even if possible, is not recommended, as these reagents can develop corrosion,

- on the left hand side, the filtration system, if required,

- sufficient room to the right of the analyser to enable access to the electrical connections terminal and to the funnel provided for pouring in the calibration solutions.

2. ELECTRICAL CONNECTIONS

Start by connecting both the electrical power supply + the ground. The electric cables enter the equipment through cable glands 1, gland n 9 and 2, n 21 at the top right hand side of the cabinet :

Access to the terminal block is possible by removing the display panel on the front. Access to the fuses is possible by removing the trap door on the right

The connections for the power supply are on the right hand side of the transformer and are accessible by removing the transformer's protection plate, which can be reached behind the door on which the alphanumeric display panel is mounted.

Avoid using a mains cable to supply high or average power machinery, as cable noise may interfere with the analyser's micro-processor.

Signals terminal

Transformer

Electrical power supply


Page 2/2

3. HYDRAULIC CONNECTIONS

The sample is evacuated after analysis to the waste system by the most direct route (no syphons) and must go through a funnel to avoid the risk of water going back up into the analyser in the event of blockage.

The sample to be connected, at the left side of the equipment, onto a buffer chamber.

The sample flow towards the measuring chamber is controlled by a solenoid shut-off valve.

The overflow from the surge chamber and that of the buffer volume must be installed as close as possible to the equipment, on the left.

4. FITTING THE MEASURING CHAMBER

After maintenance, or at the first commissioning it may be necessary to put the measuring chamber back into place.

Follow the instructions below to reinstall the chamber :

- install the measuring chamber complete with metal base plate and screw into place using the fixing screw under the cabinet,

- connect the 1.6 x 3.2 TEFLON tubing from the reagent pumps to the small tappings located behind the measuring chamber*. Make sure that the pump outlet tube (right hand side of the pump) is connected to the chamber.

The other tube (1.6 x 3.2 TEFLON) of the same diameter, connected on the left hand side of the pump will be inserted into the reagent bottle.

- connect the large diameter, silicone tube coming from the chamber overflow system (at the back, just beneath the lid) to one of the free tappings on the PVC waste collector.

- connect up the silicone tube located at the bottom left hand side of the chamber to the left hand tapping of the plexiglass 309 distribution assembly.

- connect the levelling tube above the chamber to the tapping that is perpendicular to the 309 distribution assembly.

- Finally, connect up : the emitting diode (plug "Q") the measuring cell MES1 (plug "K") the stirrer bar (plug "P")


Page 2/3

5. INSTALLATION DRAWINGS

N DESIGNATION

742NOT372 1S Installation drawing (Analyser) 742NOT373 1S Installation drawing (Analyser and Sampling plate)

742NOT374 Cooling panoply (Hydraulic circuit diagram) S791031 Cooling panoply (Presentation) S791032 Cooling panoply (Electrical box wiring) S791033 Cooling panoply (Electrical box)

S791038 - 001 Cooling panoply (Wiring) 742NOT375 - 1 Terminal drawing


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Page 2/12


COMMISSIONING AND

UTILISATION

CHAPTER 3

Page

1. COMMISSIONING ...................................................................... 3/1

1.1. Single stream analyser ....................................................................... 3/1 1.2. Measuring cycle ................................................................................... 3/2 1.3. Alarm pages ......................................................................................... 3/2

2. PROGRAMMATION .................................................................... 3/5

2.1. Access procedure to menus ............................................................... 3/5 2.2. Access procedure for users menu .................................................... 3/6 2.3. "SERES Extension" menu .................................................................. 3/6 2.4. To stop a cycle ..................................................................................... 3/6

3. LIST OF MENUS ......................................................................... 3/7

4. INPUT/OUTPUT SIGNALS DATA LINK ................................ 3/11

4.1. Output signals ................................................................................... 3/11 4.1.1. Analogic signals 4-20 mA ....................................................... 3/11 4.1.2. Dry contacts ............................................................................ 3/11 4.2. Input signals ...................................................................................... 3/12 4.3. Data Link ............................................................................................ 3/12 4.3.1. Numeric signals ...................................................................... 3/12 4.3.2. J BUS ....................................................................................... 3/12


Page 3/1

1. COMMISSIONING

1.1. Single stream analyser

Before switching on the analyser, check all the electrical and hydraulic connections. If necessary, refer to chapter 2.

Adjust the sample flow rate until water runs out of the overflow from the surge chamber - transparent surge chamber and adjustment valve located on the left hand side of the analyser - and also runs out of the overflow from the selection finger of the 309 assembly.

There should be no air bubbles in the hydraulic connection between the surge chamber and the 309 assembly.

Switch on the analyser.

The display indicates the memory reference and the date of the programme.

The analyser then goes into stand by and displays the following page :

2 26/10/93 09:34 Stop... Menu = C Start = D

S1 Cal 31 g/l < >

To start up a measuring cycle, hit key D.

To access to the user menu hit key C. If necessary, prime the reagent pumps via menu "Prime Pumps" (menu 3 page 1)

If there is a failure, the corresponding alarm is alternatively displayed on the 1st line of the display.

Repair the displayed failure and reset the RAM via menu "Alarms display" (menu 6 page 1)

When the measuring cycle starts up, the following message appears :

2 26/10/93 09:35 S1 Filling 012

S1 Cal 31 g/l < >

This means :

Day Date Hour Stream Stage in Programme in use the programme step Concentration of Cal in stream 1


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1.2. Measuring cycle

The SERES 2000 analyser carries out a colorimetric analysis of a sample in a sequential manner. The measuring cycle length can be from 4 to 20 minutes.

Refer to Chapter 5, page 5/11, the complete description of your analyser cycle is precisely described.

1.3. Alarm pages

If invalid measure appears on the display, refer to menu 5 of the 1st page of menus "Display alarms".

ALARMS CAUSES REMEDIES

Water failure Water absent or pressostat failure Check the presence of water

Zero or projector Projector faulty Measuring cell (dirty or joints) Check at step 352 of the measuring cycle if zero is < to 600

309 Block Relay command (RM) Detector faulty Check the 48 V on connector G Functioning test menu 3 page.3

Invalid measure Refer to "Display alarms" Check the nature of alarm by hitting keyD

Stop failure Brine failure Check brine flow on the sampling plate


Page 3/3

If the measure is disabled, hit key D to refer to the measure alarm.

MEASURE ALARMS CAUSES REMEDIES

ADD 1 LOW Ca++ solution (2 mg) low Pump P6 stopped No injection into the measuring cell Voltage at TST6 < 0,5 V

Check the functioning of pump P6 Check reagent bottle (empty)

ADD 1 HIGH Ca++ solution (2 mg) high Pump P2 stopped No injection of HNB Voltage at TST6 > 3 V


ADD 2 LOW Ca++ solution (2 mg) low Pump P6 stopped No injection into the measuring cell Voltage at TST6 < 1,5 V


ADD 2 HIGH Ca++ solution (2 mg) high , excess of Ca++ in brine Voltage at TST6 > 4,8 V

Change Ca solution Make a measure of brine in laboratory

DEP. DELTA No more HNB Projector faulty

Ca++ solution (2 mg) incorrect

Voltage at TST6 < to 0,5 V or > to 2,5 V

Check HNB bottle (empty) Check red light by removing receiver cell Check injection and concentration of Ca

Zero Ca AL Brine temperature faulty Voltage at TST6 < 0.10 V or > to 1,00 V

Check brine temperature in the tank (< 40 C)

DEP DELTA Zero Ca AL

ADD1 and ADD2 LOW Measuring cell empty

Check the functioning of the sample solenoid valve Check filling of sample tank


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2. PROGRAMMING

The analyser is equipped with a micro-processor to manage a series of menus for dialogue between the analyser and the operator.

These menus can be called up by means of the keyboard, (refer to list in page 3/7).

These menus enable the user to :

. modify the functions, . modify the parameters, . modify the system configuration. . If necessary, to modify a measurement cycle. . etc...

The analyser is delivered thoroughly programmed and tested for the required application.

The software comprises two distinct parts :

1) The menus reserved for the operator 2) The menus reserved for specialised technicians.

The former enables the operator to modify data considered as variable or to dialogue with the micro-processor. They also enable the verification of all the analyser's functions separately : testing of the working order of the "309 block", pumps, stirrer, etc...

The latter are reserved for highly specialised technicians. The necessary sub-programmes for a specific measurement, such as programming a measurement cycle, amplification adjustment, linearisation curve... are managed by this part of the programme.

2.1. Access procedure to menus

Access to the analyser menus is possible when the analyser displays : Menu = C

As long as the analyser displays this message, the operator can call up the required menu by key C.


Page 3/6

Key (C)

Users menu => A Seres extension => B

Escape => E choice ...

The user may choose :

. A for the user menu . B for the SERES menu (reserved for SERES maintenance) . E to return to the first page

2.2. Access procedures for user menu

Key A : The analyser displays the 1st page of the user menu (4 pages in all, please see list page 3/7).

Key D : Next page Key B : Return to the previous page Key E : Escape Key F : Interruption of the program

When the menu page is displayed, choose the required rubric and follow the instructions as displayed.

Validation

All data modification must systematically be validated using C.

2.3. "SERES Extension" menus

These menus are reserved for maintenance by SERES and require a code for access.

2.4. To stop a cycle

Key A, the analyser stops at the end of the cycle.


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3. LIST OF MENUS

The user menus consist of 4 pages :

PAGE 1

1 Channels ON/OFF 2 Local/Remote CTRL

3 Pumps priming 4 Reagents measure

5 Display alarms 6 Reset alarm

1) To start up or stop the required direction 2) For local or remote control of the analyser 3) To prime the pumps one by one in the order indicated by the programme. This operation is necessary during commissioning or when changing the

pump piping. 4) To enter the calcium value reported by the reagents 5) To display all alarms 6) To reset all alarms

PAGE 2

1 Modify density 2 Input Date / Time

3 Alarms ON / OFF 4 Modify Levels 1, 2

5 Alarm Relay rever. 6 Cleaning duration

1) To enter the density if the choosing unit is in g/kg 2) To change the time on the analyser's internal clock. Are indicated on the display : Day of the week - Day/Month/Year - Hour/Minute 3) To enable or disable the alarm relays 4) To modify the measuring alarm thresholds 1 and 2 5) To change the alarm control to positive (relay energised without alarm) or

negative logic (relay not energised without alarm). 6) To enter the duration of the automatic cleaning cycle : - Cleaning = 1 No cleaning = 2 Cleaning duration value in seconds.


Page 3/8

Enter Date and Time

Eg : Thursday 31st December 1994 23 h 47 min

Call up this menu and follow the instructions below :

KEY DISPLAY

D X XX / XX / XX XX : XX

5 5 _ XX / XX / XX XX : XX

C 5 XX / XX / XX XX : XX

3 5 3X / XX / XX XX : XX

1 5 31 / XX / XX XX : XX

C 5 31 / XX / XX XX : XX

1 5 31 / 1X / XX XX : XX

2 5 31 / 12 / XX XX : XX

C 5 31 / 12 / XX XX : XX

9 5 31 / 12 / 9X XX : XX

4 5 31 / 12 / 94 XX : XX

C 5 31 / 12 / 94 XX : XX

2 5 31 / 12 / 94 2X : XX

3 5 31 / 12 / 94 23 : XX

C 5 31 / 12 / 94 23 : XX

Keep the button "Validation" (top button) on the front of the analyser pressed down.

4 5 31 / 12 / 94 23 : 4X

7 5 31 / 12 / 94 23 : 47_

C 5 31 / 12 / 94 23 : 47

Release the 2 buttons when the cursor disappears. End of time setting operation.


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PAGE 3

1 Check 4 - 20 mA 2 Check relay cards

3 Check Bloc 309 4 Manual cleaning

5 Speed RS232 6 Datas

1) To check the 4 - 20 mA output levels, the values displayed stream by stream correspond to the beginning middle and full range.

2) To check all the functions controlled by the board When this menu is called up, the p carries out all the test operations

Hit the O key, the control sequence starts up :

a) Main board :

. Choice of direction (controls the direction relays in service) . 309 motor block functioning . Pump functioning (1 to 6) . Stirrer motor functioning . Cleaning control . Filter choke functioning

b) Terminal block boards (1 to 6) :

. Checks all the available outputs on the terminal block, stream by stream.

c) Optional board :

. Identical checks to those on the terminal block boards.

NB : KEY 0 IS USED TO CHECK ALL FUNCTIONS, BOARD BY BOARD, WHEREAS KEY 1 IS USED TO SELECT A BOARD TO BE TESTED.

3) To check the 309 Block functioning, and in particular the position of the selection finger in relation to the distribution block, positions :

- end of cycle - filling - levelling - draining - stand by

4) To carry out a manual cleaning 5) Transmission speed 6) To check the added solution value and all the details of the calculation

system.


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PAGE 4

1 Restore config. 2

3 4

5 6

1) To restore the analyser on the last safeguard configuration.


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4. INPUT AND OUTPUT SIGNALS, DATA PROCESSING CONNECTIONS

4.1. Output signals

The output signals from the analyser are of various types :

- 4-20 mA signals to record the values measured, - dry contacts to indicate an operating malfunction, - dry contacts to indicate that a set point has been passed, - dry contacts to control a function outside of the analyser, - dry contacts to indicate if a stream has been selected and if it is being

measured or not. - current loop numeric signal, input and output, enabling a dialogue with an

external computer system, transmission of all data concerning the operation of the analyser and the measurements carried out, and reception of instructions concerning the starting up or closing down of a stream, for example.

Refer to the general connection terminal diagram (drawing page 2/6).

4.1.1. 4-20 mA signals

One output is available per stream, 4-20 mA output is possible on the terminal block where it is called "RECORDING".

The galvanic insulation output is protected by a 100 mA fuse located on the PC board.

Maximum load : 800 ohms.

4.1.2. Dry contacts

Capacity 1A into 24V - NO/NC (normally open, normally closed)

These contacts indicate respectively :

- an instrument malfunction - a set point passed alarm - 2 levels per stream - if stream X has been selected - if stream X is being monitored or not


Page 3/12

4.2. Input signals

Remote "STOP AT END OF CYCLE"

"STOP END OF CYCLE" can be controlled remotely thereby setting the analyser in standby for a new measuring cycle.

To do so, replace the strap provided between terminals 6 and 7 by a remote switch.

If the contact is shut down, the analyser stops at the end of the current cycle

4.3. Data processing connections (optional)

4.3.1 Numeric signals

This is a current loop input/output :

- 20 mA at rest - no data transmission - 4 mA during transmission.

Terminals 11 and 12 for input, 13 and 14 for output Transmission speed : 9600 baud

Transmitted word :

1 start bit (bit 0) 7 ASCII code bits (bits 1 to 7) 8th bit always at zero 2 stop bits (bits 9 and 10)

For transmission protocol, consult SERES.

4.3.2. RS422 with JBUS data processing (optional)

This particular application has a specific manual.


MAINTENANCE

CHAPTER 4

Page

1. PREVENTIVE MAINTENANCE .................................................. 4/1

2. CALIBRATION ............................................................................ 4/1

3. REPLACEMENT OF REAGENTS AND SILICAGEL .................. 4/1

4. REPLACEMENT OF PUMPS TUBING ....................................... 4/3

5. INSPECTION OF THE MEASURING VESSEL ........................... 4/9

6. BREAKDOWN HANDBOOK .................................................... 4/11

6.1. Preamble ............................................................................................ 4/11 6.2. Cause for unstability measurement ................................................. 4/12 6.3. Breakdown diagnosis ....................................................................... 4/14 6.4. Electronic circuits and their adjustment ......................................... 4/17

7. DECOMMISSIONING ................................................................ 4/53


Page 4/1

1. PREVENTIVE MAINTENANCE

The analyser requires very little preventive maintenance but it is important to keep it perfectly clean.

This maintenance consists in mainly :

- the replacement each week of the reagents. At the same time, be sure of the cleanliness of the chamber, of the 309 assembly and of the silicone tubes.

- the replacement every 2 to 3 months of the peristaltic pump tubes. - inspection of the measuring chamber and replacement of the gaskets every 4 to

6 months, - complete annual overhaul of all the sub-assemblies for cleaning and inspection.

2. CALIBRATION

Automatic calibration included into the measuring cycle.

3. REPLACEMENT OF REAGENTS AND SILICAGEL TABLETS

The reagents can be stored inside the analyser in 1 or 2 litre bottles, or outside on a shelf placed nearby, the latter solution being preferable, given that some reagents can be volatile and could eventually damage the inside of the apparatus.

Some products, such as diluted sulphuric acid, soda, can be stored without damage in large capacity bottles.

When the reagents are to be changed, it is always preferable to replace the whole bottles, thereby limiting the risk of error of contamination or of dilution. Purge the pumps with the new reagents. Check that there are no leaks and that the reagents run correctly through the tubes into the chamber.

After this purge, clean the chamber with sample water. If necessary, open the lid and pass a bottle cleaner over the windows.

A small amount of diluted hydrochloric acid can sometimes be useful to remove deposit from the walls of the chamber.

The 309 assembly should also be cleaned with the bottle cleaner to remove the particles inside the silicone tubes.

If the silicagel tablets in the measuring cell and diode covers has turned light yellow in more than half of the column, it should be replaced with dry silicagel which is brown in colour.

N.B. BE SURE THAT THE REAGENT BOTTLE HAS A VENT (A SMALL HOLE ON THE TOP IS ENOUGH).


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4. REPLACING THE PERISTALTIC PUMP TUBES

The peristaltic-type pumps are driven by a synchronous-type motor.

They always carry out a whole number of revolutions.

A cam, which is part of the axis, has on its outside rim a notch into which falls on each revolution, the wheel of a switch. When the motor has been started up by the programme, the switch is released from the notch and forces the pump to turn until it falls again into the notch : this is called a "self-feed" switch.

The speed of the motor varies from one pump to another. In most cases, these speeds are 5, 10 or 15 rpm. Up to 3 pump bodies can be fitted onto one motor.

The pump bodies can be of various types :

- pump type 15, designed to transport 0,25 cc per revolution, - pump type 20, designed to transport 0,4 cc per revolution - pump type 32, designed to transport 0,8 cc per revolution.

Pumps of type 15 usually use a tube of small internal diameter 1,5 mm.

Pumps of type 20, rather rare, use tubing with an internal diameter of 2 mm.

Pumps of type 32 use tubing with an internal diameter of 3,2 mm in "PHAMED", a matter resistant to all chemical products except acetic acid, solvents and alcohols. For these products, VITON is preferable (PHARMED is resistant to RHODOL).

The internal diameter, external diameter and the length of the tube cut before fitting, are of great importance for the correct operation of the pump. In consequence, it is preferable to be supplied by SERES who supplies the cut tubes at the length that is provided especially for such pumps.

The pump ferrules, the trusses or eccentrics are specially designed for each type of pump and must not be mixed up.

Necessary tools :

1 screwdriver 1 extra plate key 8 1 plate key 8 1 assemblig pin 5 used as guide position 1 replacing tube cut in adequate length 2 ribbed ferrules (in case of breaking) standard grease


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Dismantling :

Disconnect the inlet and outlet tube. Unscrew the rotation indicator. Unscrew the 3 cap and lock nutsr.

Attention :

For 2 bodies pump, recover the pieces coupling the 2 bodies

Disjoint the flanges : insert the end of screwdriver in the previous notches, and disjoint the flanges by a leverage movement.

Inlet tube Outlet tube

Cap nut

Rotation indicator

Notches


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EXPLOSED VIEW

All the sub-assemblies must be cleaned and degreased

After cleaning and before re-assembling, proceed to a general greasing of the sub-assemblies (bearings, rotor, internal pump body, new tube ).

Attention :

Needle bearings, ribbed ferrules or excentrics are specially designed for each type of pump and not be mixed.

Cap nuts Lock nuts O-Rings

Rotation indicator Nut Screw Rotor Bearing

2 Flanges 2 Bearings

2 Ferrules 2 Fixing squares 2 Screws

Pump body Pump tubing


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Re-assembling :

The fixing square is used in the reverse side as such to have a complete encasing of ferrules and tubing.

After complete encasing, the ferrule is pulling out from the fixing square

The ferrule is correctly positionned inside the fixing square

The tube must be correctly positionned inside the pump body before screwing the fixing square.

Clearance from 2 to 3 mm

Inlet Oulet

Correct position of the tube inside the pump body


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Replace the pump on its motor by screwing up the lock and cap nuts

Finally, screw up the rotation indicator.

A=NO

B=YES Punched mark

The punched mark on the rotor must be positionned in the B circle sector as such to avoid the beraring of the excentric with the crossing section of the tube.

Maintain flanges on each side of the pump body, and, with a screwdriver, make a 1/4 of revolution on the rotor until complete encasing of the assembly (this operation needs some little effort).

Assembling pin 5 used as guide position


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5. INSPECTION OF THE CHAMBER-CHANGING THE GASKETS

Polypropylene type chamber

The analyser is equipped with a type of chamber in polypropylene (see drawing page 1/8).This chamber is equipped with windows enabling the light beam to pass from the emitting diode to the measuring cell through the chamber. Two flat gaskets made from VITON ensure that the windows are watertight. These gaskets can eventually go hard or crack, causing leaks and errors in the measurement values given.

To replace these gaskets, the chamber must be entirely disconnected : remove all the hydraulic and electrical connections.

Then, after unscrewing the fixation screw if it has not been removed, lift the chamber vertically.

Place the chamber on a table :

Dismantling

On measuring cell side :

1. remove the cell held by the two small screws located on the rim of the plug,

2. remove the cell holder by untightening the bottom screw,

3. remove the "O" ring holder fixed by 3 screws,

4. using a hook spanner, supplied with the maintenance kit, unscrew the black internal nut and remove the window and the joint,

5. put a new joint in VITON and reassemble in the reverse order as for dismantling, checking that the joint surface is clean. If the window is scratched or has become opaque, it should be changed.

On emitting diode side :

1. remove the lid by pulling slightly,

2. remove the diode holder fixed by 3 screws,

3. repeat operations (5) and (6) carried out on the measuring cell side.


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Reassembling :

1. Proceed in the reverse order to reassemble the measuring cell and the emitting diode side

2. Check that the different reassembled elements have been correctly aligned, (the position of the emitting diode has no special position).

3. Pour water into the chamber to check that it is water-tight, firs taking the precaution of blocking all the openings by connecting them up between themselves.

4. Put back the stirrer bar.

5. Put back the chamber.

6. Refer to chapter 2 concerning tubing and electrical connections.


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6. BREAKDOWN HANDBOOK FOR THE COLORIMETER

6.1. Preamble

Before reading the breakdown handbook, it is important to be well informed on how to use of the colorimetric measurement.

We recommend you to read the Chapter 1 which describes the operation of the measurement method.

In chapter 5, ANNEXE, you will find the characteristics of the analyser, its operation cycle and the reagents.

A list of user menus may be found in chapter 3. These menus enable the person responsible for the maintenance to dialogue with the analyser and to allow him to execute the control programmes of the sub-assemblies (relay, 309 assembly unit, pumps, etc).

The other list of menus concerns exclusively the electronics specialist. These menus give access to the sub-programmes that can modify the working of the analyser and mainly its measurement cycle. The results can be of great importance, this is why it is necessary to know exactly what is to be done.

We know by experience that most of the problems encountered on this type of analyser are hydraulic or chemical, rarely electronic. One should always start by checking the hydraulic points before doubting the electronic points :

- entry of water to the analyser - 309 assembly function - filling and correct drainage towards the measuring chamber - peristaltic pumps function and correct injection of the reagents

Keeping the different elements very clean is of prime necessity. Therefore it is necessary before any breakdown for them to be cleaned without having them dismantled.


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6.2. Causes for measurement instability

In this part of chapter we will analyse the causes for measurement unstability.

As an electronics specialist, the first reflex he must have is to check the power supply tension and its stability as well as the absence of parasites (interference) on the main power supply.

A ground in good condition is of equal importance when using a microprocessor as is the case on this analyser.

You will find in chapter 6.4 the description of the power supply board and the test points.

The measurement can also be disturbed for hydraulic, chemical or mechanical reasons.

Any partial disturbance on the beam can give unsteady measurement, seeing that we are measuring the absorption of the pencil of rays :

- solid particles - air bubbles - sample cloudiness - condensation on the outside of the chambers windows - etc...

The studied volumes must be constant : sample volume, volume of the injected reagents.

The rinsing must also be effective so as to avoid any traces.

According to the observation of a complete measurement, opened chamber can help in the diagnosis.

If there are visible particles in the pencil of rays, it is necessary to filter the sample before filtering the analyser.

If there are air bubbles, one must firstly be assured that there are no bubbles in the hydraulic connections between the sample inlet chamber and the measuring chamber, and that the inlet surge chamber overflow and the 309 assembly generously runs over.

If, in despite of this fact, there continues to be a release of air bubbles, one must call upon the chemists.

In the case where the sample is cloudy, also call upon the chemists.

The condensation on the outside of the chamber windows is most difficult to observe even when the chamber is open. Check the silicagel cartridges.


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The volumes used must be constant. This means that :

- the chamber must be completely emptied at each rinsing. Check that there is no blockage or air inlet on the water ejector (level adjustment of the 309 assembly) for drainage,

- it must be filled so as to run over by the overflow at each filling,

- the surplus of the sample must be completely drained by the levelling tap while levelling. It is important that before the "309 Block" distribution unit comes back to the standby position, that the water that is in the tube linking the levelling tap to the 309 distribution assembly, has been completely drained. Check that either the tapping or the water ejector of the 309 assembly for levelling are not clogged.

- the chamber must not be filled or drained during coloration development : pump leakage, leakage from the chamber itself, leakage from a solenoid valve or bad positioning of the distribution finger when not in movement,

- the pumps must execute a certain number of complete revolutions and correctly inject the reagents into the chamber.

Certain elements of the chamber such as the emitting diode, measuring cell, etc... must be correctly lined up and adjusted.

The magnetic stirrer bar must rotate permanently except while levelling.

It is possible that a parasitic coloration comes about when making a measurement.

This happens :

- when the chamber is not well rinsed,

- when the reagents contaminate the sample or when the sample contaminates the reagents before their entrance into the chamber. For this last point there are several possibilities or already exist on the analyser. If the reagent contaminates the sample, one injects a levelling tap by a tapping called "anti-reagent" (as with silica monitor under phosphates or ammonium monitor with a stainless steel chamber).

- if the sample contaminates the reagent, at the end of cycle, when rinsing we allow a pump rotation so as to eliminate the contaminated part,

- when an element is present in the sample and interferes with the measurement due to an identical coloration. This happens with the phosphates in the measurement method of silica. One must call upon the chemists so that they can find the way to eliminate the effects on the interfering element.


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6.3. Breakdown diagnosis

The following list indicates the most frequent breakdowns or failures as well as their remedy. We advise you to thoroughly read this chapter before starting any operation with the analyser so as to understand its correct functioning.

The programme has failed See that the clock is set at the right time. It is possible to have interference disturbing this clock.

The measurement is unsteady Read paragraph 6.2.

Check the stability of the projector voltage. Are both the compensation cell and the measuring cell correctly connected ?

Check voltage stability on connector 1 in test 6 on the amplifier board.

Examine the power supply switches on the low voltage power supply board.

Water failure not functioning The lack of water is tested in the beginning of the cycle for only a few seconds.

The lack of water will be reset in the next cycle.

Place an ohmmeter at the terminals of its connector (J), between 1 and 2, there should be practically no resistance when in presence of water and great resistance in absence of water.

A pressure switch : blow into the tube to be sure it functions correctly. If necessary adjust its length. This will make the pressure vary.


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No pumps are running This is normal if there is a water failure : this way there is no risk of polluting the chamber with the reagents.

Strap the terminals 1 and 2 from the water failure connector (J).

Call up menu 3 page 1. If still not running, the motor is out of order or the "self-feed" switch is faulty. If it runs with the connector upside down, it is because the corresponding relay has had it.

309 assembly is not working Call up menu 3 page 3 to test the 309 block in each position.

Check the motor, and the position of the notch disc that passes in between the optical coupler's detection of position. It must not rub against anything at all.

One can connect an oscilloscope to CB12c (see 74208 board). Check optical coupler's power supply.

The stirrer does not turn Check to see that the magnetic bar is at the bottom of the chamber.

Check all the relays by calling up menu 2 page 3. When the RL relay is commanded, the stirrer's motor must turn.

With a voltmeter check the change of state of the RL relay.

Check the motor by connecting it to 48 V AC.


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4.20 mA output is not working Check the 100 mA fuse on the output in question.

Stream 1 - the fuse on the p board.

Stream 2 to 6 - the fuse (F1 to F5) can be found on the recorder output (C3). By calling up menu 1 page 3 the output signals can be checked one by one and set to 4 and 20 mA.

An alarm is not working Call up menu 2 page 3 to test of all relays successively and control at the same time the tilting over of the corresponding relay by using an ohmmeter.

No reagents entry Examine the tube of the pump.

Be sure that the tip of the suction pipe is deeply plunged into the reagent and that there is no air intake. The reagent bottle should have a vent.


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6.4. The electronic circuit boards and their adjustment

6 circuits can be fitted in the analyser's rack (refer to 3.1, page 1/7 in chapter 1).

These circuits can be referred to as follows :

C1 Microprocessor PC board 651-20C always in place

C2 Measurement board 742-08B always in place

C3 Recorder output board 742-121 in place only on multi- stream analysers or special options

C4 JBUS board 893-001 Data link (optional).

C5 Low voltage Power Supply 742-02 always in place

C6 Relay PC board 742-03 always in place

The terminals 742 126 (terminal N 1) and 742 127 (terminals 2 to 6) are made up of a small printed circuits (PC) with at least 1 which mandatory- TERMINAL 1 - on all the units.

The terminal options are only provided for specific options.


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Circuit C1 - Microprocessor PC board 651-20C

The microprocessor used is a 16 bits mini controller.

In this case, it runs at 8 MHz, the time base having been supplied by a piezo-electric component (Q1).

- the ci 2 random access memory with an internal battery with a 30 year life spand.

- the ci 3 is an EEPROM (electrically programmable). In this circuit are placed some configuration data of the analyser.

- the ci 4 is an EPROM (electrically programmable). The software of the analyser is placed in this circuit.

- the bottom button enables the resetting of the programme.

- the top button enables the validation of modified information by code, or the call upon of maintenance codes.

- the connector V supplies the alpha-numeric display.

- the connector CL supplies the 16 key keyboard

- the connector UT is only reserved for SERES and its testing bench.

- the potentiometer P1 allows adjustment of contrast on the display panel.

The recorder output of stream n1 is on this board. It is essentially composed of a analog/numeric converter (ci 30), a power transistor (T8), a 100 mA fuse (F1), an adjustment potentiometer of 4 mA output (P3) and of 20 mA (P2).


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Circuit C2 - Amplifier board 742-08B

This circuit is essentially comprised of :

- the amplification of the measuring cell

- the power supply of the transmitting diode

- the logical order of the 309 block pumps and their extended functions such as : exterior cleaning and water failure.

Amplifier

- on the colorimeter, the ci 12 2/2 on the upper left hand side of page 3/3 of the 742-08 diagram is not used.

- the ci 12 1/2 and the ci 14 are only used in the case of double sensitivity : unit with 2 very different ranges. The working order of this second sensitivity is identical to the one described here below.

- the inferior part of the diagram on page 3/3 deals with the ampli n 1 of the cell n 1.

The resistance R72 mounted onto contact points is adapted according to each unit depending on the light path, the measurement method, etc...

This resistance sets the gain on the ampli. one should obtain -4,8 V in test 5 when the chamber is full of clean water, automatic zero in progress.

In test 6 0,3 V is obtained (and 0,3 V in test 4) if the second sensitivity is used (in this case strap 9 is in place).

The ci 13, 15, and 17 make up a multiplex controlled by a p (microprocessor board) and can act upon the analogical gains.

Transmitting diode power supply

Page 2/3 of the 742.08 diagram concerns the power supply of the transmitting diode.


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Circuit C3 Recorder output 742-121 (optional)

This circuit deals with :

- recorder outputs of the streams 2 to 6 with their fuses - regulation of temperature 1 - control of the temperature 2 - exterior selections of streams

Recorder output

One output is comprised of :

- a potentiometer adjusted at 4 mA (even) - a potentiometer adjusted at 20 mA (odd) - a power supply transistor - 2N1613 - a 100 mA fuse - a voltage converter AD694

A multiplexer that is common to all the outputs - ci 21 - dispatches the information coming from the p.

Temperature (t) regulation 1 and (t) 2

The element that measures the T generally used by the heat of the steel chamber is a AD590 sunk in the chamber mass. For the adjustment of the chamber's slope one must let the chamber get to room T and measure this t by using a thermometer covered with silicone grease immersed in the hole provided for in this chamber.

Use a voltmeter in test 1 and adjust by P3 100 mV/C for example. If the chamber's T is at 20C, adjust to 2 V in test 1 by P3.

N.B. : Same procedure by the 2nd AD590 by comparing with a thermometer.

The red diode indicates that heating is in progress. The green diode indicates that the p gives the order to stop the heating temporarily.

Exterior selection of streams

The inferior part of the diagram on the 742-121 board on page 2/3 has to deal with the selection of the exterior selection of the streams.

By using a switch connected to the terminal the anodes of the diodes on the 5 V optical couplers one can isolate the stream when carrying out an "end of cycle".

If the analyser has only one stream, this board not being in place, the stopping of the analysis can be remote controlled by entering "end of cycle" (refer to terminal 1 in chapter 2).


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Circuit C4 - Modem 893-001 (optional)

The microprocessor used is a 16 bit mini-controller.

In this case, it runs at 8 MHz, the time base is supplied by a piezzo-electric component (Q1).

- ci 2 is an electrically programmable EPROM

- ci 4 is a RAM

- ci 8 is a UART, enabling dialogue between the analyser's microprocessor and the Modem circuit.

The information coming from the data processing system (Master) are read by this board before being transmitted to the analyser's microprocessor.

This board, therefore is the interface circuit between the analyser and the external data processing system.


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Circuit C5 - Low voltage power supply board 742-02

The logical and analogical voltages are well separated so as to not disrupt the p.

The potentiometer P1 is not mounted, but can be if the logical 5 V is weak. The p would therefore be disrupted.

In this case, the P1 and the resistance R1 would allow shifting of the zero on the power supply to obtain a correct logical 5 V.

All voltages supplied by this board are protected by fuses.

F1 1A power supply -15V

F2 1A -26V

F3 1A 5V logical

F4 2.5A +26.5V

F5 1A +15V

F6 0.5A power supply +15V and +30V external


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Circuit C6 - Relay PC board 742-03

Only the necessary relays are mounted.

You will find below the diagram 742-03 underneath the relay board the element that it commands.

Each relay is controlled by the p board.

The 2 diagrams found after the relay board deal with the terminal connections towards the outside of the analyser.

The terminal 1 and the options are larger than the terminals 2 to 6 (refer to diagram 742-199 in chapter 15).


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7. DECOMMISSIONING

If the analyser is to be left switched off for a period of more than a day or so, it is preferable to condition it for such a stoppage, to avoid problems when it is put back into service.

Proceed as follows :

. Purge the reagent pumps with distilled water, by calling up menu "Prime Pumps".

. Clean the chamber and the 309 assembly correctly with a bottle brush and, if necessary a small amount of diluted hydrochloric acid. Remove any particles and algae that may be present in the tubing.

. Empty the chamber, . Switch off the analyser, . Close off the sample inlet valve.

When the unit is put back into service, the pumps should be purged again with new reagents if possible, and the chamber abundantly rinsed, then carry out a calibration operation.

Also check that the silicagel is brown-yellow, if not, it should be replaced.

The accuracy of results and duration of the equipment depends largely on the state of cleanliness in which the analyser is kept.


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Page 5/1

ANNEXE

CHAPTER 5

1. INTERNAL HYDRAULIC DIAGRAM

2. SPECIAL CHARACTERISTICS

3. PROGRAMMING OF A MEASURING CYCLE

4. PREPARING THE REAGENTS AND CONSUMPTION

NUMBER OF STREAM :

DILUTION OF THE SAMPLE BY :

TYPE OF MEASURING CHAMBER :

NUMBER OF MOTOR/PUMP ASSEMBLIES :

RANGE :

ONE

POLYPROPYLENE

4 x 15 / 15 RPM


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Page 5/4

SPECIAL CHARACTERISTICS

CALCIUM MAGNESIUM

IN BRINE

COLORIMETRY METHOD

Precautions

The calcium concentration being very low, the entry of parasite calcium into the measuring chamber must be avoided.

Do not use materials other than :

- Polypropylene (measuring chamber) - Teflon or nylon (solenoid valve bases) - Silicone (connecting tubes) - Tygon or Pharmed (pump tubes)

Supply the 309 assembly block with distilled water, if possible. One drop of industrial water in the measuring chamber is equivalent to the analyser's full range.

Emitting diode : LED 8102

Wavelength : 650 nm

NOTA :

With this method, the automatic zero is carried out after the blue coloration reaction.

After start up, the 1st measurement cycle should not be taken into account.


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CALCIUM MAGNESIUM

IN BRINE

COLORIMETRY METHOD

Checking list for operator :

1) Connect the sample line to the analyser.

2) Check that brine flow is about 40 - 60 litres/hour.

3) Check the brine temperature inlet. It must not be less than 25 C in the tank located on the left hand side of the analyser. If the temperature is less than this, there is a risk of crystallisation in the pipe.

4) Check that the distilled water flow on the analyser is about 35 litres/hour.


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CALCIUM MAGNESIUM

IN BRINE

COLORIMETRY METHOD

CALIBRATION

Manual calibration :

1) Take a sample at the sampling point under the analyser. 2) Send the sample to the main lab for determination of (Ca + Mg) content by AA

Spectrophotometer, Furnace. The result must be expressed as Ca (+2) and Mg (+2) separately.

3) Calculate as follows :

Say Ca (+2) = A ppb Mg (+2) = B ppb So

Total Ca (+2) = A ppb + B x 4 ppb 2.4 = Z

4) Note the value on the screen. Let it be X 5) Note the value in "REAGENT VALUE". Let it be Y 6) Push A to STOP CYCLE Push C for MENU Push A for USER'S MENU Push 4 for REAGENT VALUE 7) Add value on the screen (X) and Reagent Value (Y) i.e. X + Y 8) Minus off the desired value Z (which was analysed in the lab). X + Y - Z = V where V will be the new Reagent Value. 9) Key the new Reagent Value and validate by pushing C. Key E to GO OUT OF MENU Key D to START NEW CYCLE 10) Wait for 2 measurements and check if you have the desired value on screen.

AUTOMATIC CALIBRATION

Enter the laboratory value. The analyser carries out a measuring cycle of reagent. At the end of the cycle, a new value of reagent is displayed. Valid this value by C, if not, hit key E to escape (without validation).


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CALCIUM MAGNESIUM

IN BRINE

COLORIMETRY METHOD

Replacement of reagents :

To change the reagents bottle, proceed as follows :

1) When there is about 1 inch of reagent left in the bottle, replace the reagent. (retain the remaining reagents in case the new ones are not good).

DO NOT WAIT UNTIL THE BOTTLE IS COMPLETELY EMPTY.

2) Change all the bottles with care so as not to contaminate the reagents.

3) Place the reagents as follows :

Pipe colour Reagent Concentration Pump Brown Red

Orange Blue

KOH HNB

EDTA Ca

130 g/l 500 mg/l N / 500 2 mg/l

1 2 3 6

4) Start the pumps with new reagents.

Push A to STOP CYCLE

Push C for MENU

Push A for USER'S MENU

Push 3 to PRIME PUMP 1

5) Let the pump run for about 2 minutes to allow the reagents to enter the measuring vessel.

Repeat the procedure for pumps 2, 3 and 6 by pushing D.

6) Push E when the last pump is started

Push E again to go to MEASURING CYCLE

Push D to START CYCLE

7) After 1 hour, check if the value on the screen is the same as the value on the screen previously.


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CALCIUM MAGNESIUM

IN BRINE

COLORIMETRY METHOD

IF NOT :

8) Replace the new reagents with the old ones, and repeat Step 3 - 6.

9) Then, replace one by one the old reagents with the new ones, and repeat Step 3 - 6. This way you can determine which new reagent is contaminated with Ca.

Note :

(i) First change the KOH, followed by HNB, then Ca, then EDTA. (ii) A little difference in the value is possible depending on the quality of the

chemicals. This can be rectified by adjusting the "Reagent Value" (refer to procedure for "Calibration Adjustment).


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CALCIUM MAGNESIUM

IN BRINE

COLORIMETRY METHOD

HYDRAULIC PANOPLY

The hydraulic panoply consists of a panel on which are mounted :

1 cooler

1 electrical box

1 flow rate detector

and 2 solenoid valves

The hydraulic panel is an autonomous device, the sampling system is self-controlled by the electrical box.

The single electric connection between the panoply and the analyser is for sample flow rate failure detection, permitting the analyser to carry out an automatic cleaning cycle.

The continuous cooling of the hot sample is not possible due to the low heat transfer of the cooler material, therefore a cyclic sampling has been perfected.

To manage the sampling cycle, a timer is used to programme the sample running time (T.ON) and the cooling time (T.OFF) of the sample inside the cooler.

Their timer adjustments must be determined in function of the temperatures of the sample and the cooling water.

Sample running time : adjust "T.ON" to estimated value in seconds (SV1 activated).

Cooling time : adjust "T.OFF" to estimated value in minutes (SV1 disactivated).


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CALCIUM MAGNESIUM

IN BRINE

COLORIMETRY METHOD

CLEANING CYCLE

In the event of a sample flow rate failure, the solenoid valve SV2 is activated, replacing sample by de-ionised water.

A signal via dry contacts 4 and 5 in the electrical box, switch over the measuring cycle to the cleaning cycle.

The cleaning cycle performs a rinsing of the measuring chamber with de-ionised water during a preset time.

- Choose menu 6 page 2 - Enter 1 for cleaning (2 for no cleaning) - Validate by C

- Enter the duration of the cleaning cycle (in seconds) - Validate by C

NOTA :

As long as the sample flow rate failure is detected, and after the cleaning cycle the analyser goes to "Stand-By" position. The measuring cycle restart automatically at the new detection of the sample flow rate.

If the electric connection between the hydraulic panoply and the analyser is not connected, and in the event of a sample flow rate failure, no cleaning cycle will be carried out, meanwhile, the measure continues on de-ionised water.

Therefore, manual cleaning can be started up at this time. By using menu 4 page 3 (manual cleaning) the analyser carries out a cleaning cycle during the programmed time.

In the case of more than 1 stream, the cleaning cycle will be activated only if the brine default is detected on all streams.


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PROGRAMMING DIAGRAM

CALCIUM MAGNESIUM

IN BRINE

COLORIMETRY METHOD

Duration of a cycle : 500 seconds

0 Start

6 Rinsing of measuring chamber : EV1 is open (filling with sample) Emptying by means of 309 block

80 2nd rinsing of measuring chamber

160 Filling of chamber for measure : EV1 is open (filling with sample)

180 Levelling - stop stirrer

220 Start up Pump P1 - 3 revolutions - Injection KOH Start up Pump P2 - 3 revolutions - injection HNB Start up Pump P6 - 2 revolutions - injection calcium (1st step)

272 Measurement (B) after 1st step red/violet coloration

274 Start up Pump P6 - 3 revolutions - injection calcium (2nd step) red coloration

310 Measurement (C) after 2nd step

314 Start up Pump 3 - 1 revolution - injection EDTA

350 Final measurement on dark blue coloration

352 Automatic zero on blue colour - saved for next cycle

380 1st rinse/end of cycle

440 2nd rinse/end of cycle

500 End of cycle

0 New cycle


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PREPARING REAGENTS AND CONSUMPTION

CALCIUM MAGNESIUM

IN BRINE

COLORIMETRY METHOD

Quality goods for analysis

Potassium Hydroxide 2,3 N (KOH)

- Dissolve 130 g KOH in 1000 ml of de-ionized water. Consumption : 130 ml/day Storage : Teflon bottle (F.E.P.)

Hydroxynaphtol blue (HNB) Riedel de Han Ref. 33936

- Dissolve 500 mg of HNB (C20H11N2Na2O11S3)in 1000 ml of de-ionized water. Consumption : 130 ml/day Storage : Teflon bottle (F.E.P.)

EDTA N/500

Dissolve : 372 mg of EDTA acid, disodium salt C10H14N2Na2O8,2H2O 10 mg of EDTA, magnesium dipotassium salt C10H12K2MgN2O8,2H2O in1000 ml of de-ionized water. Consumption : 45 ml/day Storage : P.E. bottle

Calcium at 2 mg/l

- Prepare the daughter solution from the mother solution of 1 g/l (commercially available), by diluting 2 ml in 1000 ml of de-ionized water.

Consumption : 170 ml/day Storage : P.E. bottle

IMPORTANT : Do not prepare or store the reagents in bottles made of glass.

Check that the de-ionized water contains the least calcium possible.


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SPARE PARTS

CHAPTER 6


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INFORMATION SERVICE DEPARTMENT

Head office and factory:

SERES Environnement La Duranne 360 rue Louis de Broglie BP 20087 13793 AIX EN PROVENCE CEDEX 3

Tel: +33 4 42 97 37 37 Fax: +33 4 42 97 30 30 Web: www.seres-france.com

Maintenance Assistance Service:

Manager: Frederic VAU Tel: +33 4 42 97 37 32 [email protected]

Assistant: Carole HAZAN Tel: + 33 4 42 97 37 36 [email protected]

Spare parts manager: Patrick PAQUIER Tel: + 33 4 42 97 37 35 [email protected]

Technical support: [email protected]

NB: To avoid errors, when ordering spare parts or service attendance please specify the serial number of the analyser if possible.


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Documents

10589A-Calcium-Magnésium 2000 Avec Refroidisseur