BioSystems A-15 Service manual

Download

A15

SERVICE MANUAL

ENGLISH

SERVICE MANUAL

English

TESE00005-11-ING July - 2009

TABLE OF CONTENTS

1. INTRODUCTION ................................................................................ 8

1.1. GENERAL DESCRIPTION OF THE ANALYZER ..............................................................8

1.1.1. Operating arm ........................................................................................................................................ 9

1.1.2. Dispensing system................................................................................................................................ 9

1.1.3. Reactions rotor and reading .............................................................................................................. 10

1.1.4. Electronic system................................................................................................................................ 11

1.1.5. Application program ........................................................................................................................... 11

1.2. FUNCTIONING OF THE ANALYSER ..............................................................................11

1.3. TRANSPORT AND RESHIPMENT OF THE ANALYZER ...............................................12

2. MECHANICAL ELEMENTS ............................................................. 14

2.1. Instrument breakdown ...................................................................................................14

2.2. Description of the mechanical elements .....................................................................14

2.2.1. Operating arm ...................................................................................................................................... 14

2.2.1.1. X Guide. ........................................................................................................................................ 15

2.2.1.2. X Carriage .................................................................................................................................... 16

2.2.1.3. Y Carriage .................................................................................................................................... 16

2.2.1.4. Needle unit ..................................................................................................................................18

2.2.2. Dispensing system.............................................................................................................................. 19

2.2.2.1. Thermostated probe ................................................................................................................... 19

2.2.2.2. Dispensing pump ........................................................................................................................ 19

2.2.2.3. Tubes and containers ................................................................................................................. 21

2.2.2.4. Container level control sensors. ............................................................................................... 22

2.2.2.5. Racks tray with integrated washing station. ............................................................................ 23

2.2.2.6. Washing pumps ........................................................................................................................... 23

2.2.3. Reaction rotor with integrated optical system. ................................................................................ 24

2.2.3.1. Thermostated rotor and photometric system .......................................................................... 24

2.2.3.2. Lighting system ........................................................................................................................... 26

2.2.4. Electronics cover ............................................................................................................................... 27

2.2.5. Main cover hinges ............................................................................................................................... 28

2.2.6. Base ...................................................................................................................................................... 29

2.2.7. Casings ............................................................................................................................................... 30

3. Electronic system ........................................................................... 31

3.1 CPU Board (CIIM00026) ..................................................................................................31

3.2 Power Supply Board (CIIM00015) ..................................................................................36

3.3 Needle Board (CIIM00017) ..............................................................................................38

3.4 Photometry Board (CIIM00027) ......................................................................................40

3.5 XYZ Interconnection Board (CIIM00018) .......................................................................41

3.6 Communications Board (CIIM00036) ............................................................................42

3.7 Rotor interconnection board (CIIM00029) .....................................................................43

3.9 Pump interconnection board (CIIM00028) ....................................................................45

3.10 Component relation .....................................................................................................47

3.11 Auxiliar channel information ........................................................................................47

3.12 Interconnection between boards .................................................................................51

3.13 Schematic liquid circuit ................................................................................................57

4. SERVICE PROGRAM ...................................................................... 58

4.1 Initialising the analyser ..................................................................................................58

4.2. ADJUSTMENTS .............................................................................................................60

4.2.1. Adjustment of the needle thermostatation system .......................................................................... 60

4.2.2. Adjustment of the rotor thermostation system ................................................................................ 61

4.2.3. Adjustment of the positioning of the operating arm ........................................................................ 62

4.2.3.1 Adjustment of X, Y and Z position for reagent and pediatric racks ............................................. 62

Service manual

4.2.4. Adjustment of the positioning of the rotor ....................................................................................... 65

4.2.4.1. Centering of the rotor with regard to the dispensing point .........................................................65

4.2.4.2. Centering of the rotor with regard to the optical system ............................................................. 65

4.2.5 . Adjustment of the positioning of the lter wheel ............................................................................ 66

4.2.6. Adjustment of the level control scales .............................................................................................. 67

4.2.7. Adjustment of the level detection sensitivity ................................................................................... 68

4.3. TESTS ..............................................................................................................................68

4.3.1. Motor tests ........................................................................................................................................... 68

4.3.1.1. Initialization test ............................................................................................................................... 69

4.3.1.2. Movement test .................................................................................................................................. 69

4.3.1.3. Loss step test ................................................................................................................................... 70

4.3.1.4. Stress mode test .............................................................................................................................. 70

4.3.1.5. Z axis secu ri ty systems test............................................................................................................ 70

4.3.1.6 Maximum Z verication test ............................................................................................................. 71

4.3.2. Diaphragm pumps and electrovalves test ........................................................................................ 71

4.3.2.1. Functioning test ...............................................................................................................................72

4.3.2.2. Stress mode test .............................................................................................................................. 72

4.3.3. Needle self-centering system test ..................................................................................................... 72

4.3.4. Needle level detection system test .................................................................................................... 72

4.3.5. Needle thermostatation system test.................................................................................................. 73

4.3.6. Needle rotor thermostatation system test ........................................................................................ 74

4.3.7. Photometry tests ................................................................................................................................. 74

4.3.7.1. Base line and integration times ...................................................................................................... 74

4.3.7.2. Darkness counts .............................................................................................................................. 76

4.3.7.3. Repeatability without moving the lter wheel ............................................................................... 76

4.3.7.4. Stability ............................................................................................................................................. 77

4.3.7.5. Repeatability moving lter wheel ................................................................................................... 77

4.3.7.6. Absorbance measurement .............................................................................................................. 78

4.3.7.7. Reactions rotor check...................................................................................................................... 78

4.3.8. Level control scales test..................................................................................................................... 79

4.3.9. Covers detection test .......................................................................................................................... 79

4.3.10. PC-Analyzer communications channel test.................................................................................... 80

4.3.11. Global stress mode of the analyzer ................................................................................................. 80

4.3.12. Photometry tool ................................................................................................................................. 81

4.4. UTILITIES .......................................................................................................................82

4.4.1. Disassembly of the dispensing needle ............................................................................................. 82

4.4.2. Fluid system supply ............................................................................................................................ 83

4.4.3. Cleaning of the dispensing system ................................................................................................... 84

4.4.4. Changing the lamp .............................................................................................................................. 84

4.4.5. Conguration of the lter wheel ........................................................................................................ 85

4.4.6. Demonstration mode ..........................................................................................................................85

4.4.7 Read/load adjustments and cycles..................................................................................................... 86

4.4.8 Change the rotor type .......................................................................................................................... 87

4.5. REGISTER .......................................................................................................................88

4.5.1. Introducing the analyzer serial number ............................................................................................ 88

4.5.2. Service Reports ................................................................................................................................... 89

4.5.3. Language change ................................................................................................................................ 89

4.5.4. Users .................................................................................................................................................... 90

4.6. MONITOR .......................................................................................................................90

4.7 User’s program ...............................................................................................................91

4.7.1 Conguration of the level of access to the analyser ....................................................................... 91

4.7.2 Reagent Consumption ........................................................................................................................ 92

5. MAINTENANCE AND CLEANING .................................................. 94

5.1. MAINTENANCE OPERATIONS ......................................................................................94

5.1.1. Housings and covers .......................................................................................................................... 94

5.1.1.1. Removing the needle unit casing .............................................................................................. 94

5.1.1.2. Removing the front housing ...................................................................................................... 94

5.1.1.3. Removing the main cover .......................................................................................................... 95

5.1.1.4. Removing the upper casing ....................................................................................................... 96

5.1.1.5. Removing the spring protector .................................................................................................. 98

5.1.2. Operating arm ...................................................................................................................................... 98

5.1.2.1. Fully removing the operating arm ............................................................................................. 98

5.1.2.2. Changing the arm hose ............................................................................................................. 99

5.1.2.3. Changing the X motor ............................................................................................................... 100

5.1.2.4. Changing the Y motor ............................................................................................................... 102

5.1.2.5. Changing the Z motor ...............................................................................................................102

5.1.2.6. Changing the Y motor belt ....................................................................................................... 103

5.1.2.7. Changing the spring ................................................................................................................. 103

5.1.3. Dispensing system............................................................................................................................ 104

5.1.3.1. Changing the thermostated pipe. ........................................................................................... 104

5.1.3.2. Changing the dispensing pump seal ...................................................................................... 105

5.1.3.3. Changing the dispensing pump motor ................................................................................... 106

5.1.3.4. Changing the dispensing electrovalve ................................................................................... 107

5.1.3.5. Changing the container tube unit ............................................................................................107

5.1.3.6. Changing the distilled water container lters ........................................................................ 107

5.1.4. Reactions rotor and reading ............................................................................................................ 108

5.1.4.1. Changing the rotor temperature probe ................................................................................... 108

5.1.4.2. Fully removing the rotor ...........................................................................................................109

5.1.4.3. Changing the rotor Peltier cells ...............................................................................................109

5.1.4.4. Changing the rotor cover detector .......................................................................................... 110

5.1.4.5. Changing the rotor start photosensor .................................................................................... 110

5.1.4.6. Changing the rotor motor ..........................................................................................................111

5.1.4.8. Changing the lamp .................................................................................................................... 112

5.1.4.9. Changing an optical lter ......................................................................................................... 113

5.1.4.10. Conguration of the lter wheel ............................................................................................ 113

5.1.4.11. Changing the lter wheel start photosensor ........................................................................ 113

5.1.4.12. Changing the lter wheel motor ............................................................................................ 114

5.1.5. Electronic Systems ........................................................................................................................... 114

5.1.5.1. Changing the X, Y and encoder start photosensor ................................................................ 114

5.1.5.2. Changing the microprocessor board ...................................................................................... 115

5.1.5.3. Changing the power supply board .......................................................................................... 115

5.1.5.4. Changing the main power supply source ............................................................................... 116

5.1.5.5. Changing the photometric system board ............................................................................... 116

5.1.5.6. Changing the front indicator .................................................................................................... 117

5.1.5.7. Changing the rmware program .............................................................................................. 118

5.2. RECOMMENDED PREVENTIVE MAINTENANCE .......................................................118

5.3. CARE AND CLEANING .................................................................................................119

5.3.1. General care of the analyzer ............................................................................................................ 119

5.3.2. Cleaning the optical system ............................................................................................................. 119

5.3.3. Cleaning the dispensing system ..................................................................................................... 120

5.3.4. General cleaning of the interior of the apparatus .......................................................................... 120

A I. TECHNICAL SPECIFICATIONS ................................................. 121

A II. ADJUSTMENT MARGINS TABLES .......................................... 125

A III. LIST OF CONSUMABLES, ACCESSORIES AND SPARES ... 126

A IV. LIST OF REQUIRED TOOLS .................................................... 128

A V. SOFTWARE VERSIONS ............................................................ 128

Service manual

1. INTRODUCTION

The A15 analyzer is an automatic random access analyser specially designed for performing biochemical and turbidimetric clinical analyses. The instrument is controlled on-line in real time from an external dedicated PC.

In each of the elements of the A15 analyser, BioSystems has used leading edge tech nology to obtain optimum analytical performance, as well as taking into account eco no my, robustness, easy use and maintenance. A three-axis Cartesian operating arm prepares the reactions. Dispensing is performed by means of a pump with a ceramic piston via a detachable thermostated needle. A washing station guarantees that the needle is kept perfectly clean throughout the process. The reactions take place in a thermostated rotor in which absorbance readings are taken directly by means of an integrated optical system.

This manual contains the information required for learning about, maintaining and repairing the A15 automatic analyzer. It should be used by the Technical Service as a learning and consultation docu ment for the maintenance and repair of the instru ment. Chapter 2 describes the different mechanical elements that form the analyzer together with their functionality, and chapter 3 describes the electronic system. Chapter 4 describes the Service Program. All the adjustments and checks of the analy zer are carried out through this program, which is independent from the appli cation program (User Program). The separation of both programs enable it to be maintai ned separately and the extensions and improvements of one do not affect the other. The user does not have the service program. The Technical Service must install it on the user’s computer in order to carry out the service requirements. Once said tasks have been carried out, the Technical Service must uninstall the program. Chapter 5 offers instructions for the different mainte nance, rep air and cleaning operations that can be carried out by the Technical Service. The annexes contain a summary of

the technical specications of the analyzer, the adjustment margin tables, the lists of accessories and spares, a list

of software versions and their compatibility and a software troubleshooting guide.

1.1. GENERAL DESCRIPTION OF THE ANALYZER

The A15 analyser is made up of three basic elements: the operating arm, the dispensing system and the reading and reactions rotor. The electronic system of the instrument controls said elements and communicates with the external computer containing the application program. Through this program, the user can control all the operations of the analyzer.

1.1.1. Operating arm

This is a three-axis XYZ Cartesian mechanism. The X and Y axes move the dis pens ing needle over the analyser horizontally and the Z axis moves it vertically. It is operated by three step-by-step motors. In each 24-second prepara-

tion cycle, the operating arm performs the following actions: rst of all, it sucks in the reagent from the corresponding

bottle. Next, the needle is washed externally in the washing station and sucks in the sample from the corresponding tube. It is washed externally again and dispenses the sample and the reagent into the reactions rotor. Finally, it is exhaustively washed internally and externally before proceeding with the next preparation. The arm has a system for controlling vertical movement to detect whether or not the needle has collided into anything on descending. If a collision occurs, as may be the case if, for example, a lid has been left on a bottle of reagent, the arm automatically

restarts, veries the straightness of the needle and continues working issuing the corresponding alert to the user.

A vertical axis retention system prevents the needle from falling in the case of a power cut, avoiding injury from the needle to the user or the needle being bent by an attempt to move the arm manually. The operating arm only makes the preparations if the general cover of the analyser is closed. If the cover is raised while it is functioning, the arm automati cally aborts the task in progress and returns to its parked position to avoid injury to the user.

1.1.2. Dispensing system

This system consists of a thermostated needle, supported and displaced by an operating arm and conne ct ed to a dispensing pump. The needle is detachable to enable cleaning and replacement. The analyser has capacity level detection to control the level of the bottles and tubes and prevent the needle from penetrating too far into the corresponding liquids, thus minimising contamination. An automatic adjustment system informs the user if the needle is not mounted or if it is too bent. The needle has a sophisticated Peltier thermos tatation system, with PID control, capable of thermostating the preparations at approximately 37º in less than 15 seconds. Dispensing is carried out by means of a low maintenance ceramic piston pump driven by a step-by-step motor. It is capable of dispensing between 3 and 1250 ml. The exterior of the needle is kept cons tantly clean by a wash station included in the base. A membrane pump transports the waste to the corresponding container.

The A15 analyser has a tray with 4 free positions for racks of reag e nts or samples. Each reagents rack can carry up to 10 reagents in 20 ml or 50 ml bottles. Each samples rack can contain up to 24 tubes of samples. The samples can

be patients, calibrators or controls. The analyser can be congured to work with 13 mm or 15 mm diameter tubes of samples with a length of up to 100 mm or with paediatric wells. Any possible conguration of racks can be mounted

from 1 rack of reagents (10 reagents) and 3 racks of samples (72 samples) to 3 racks of reagents (30 reagents) and 1 rack of samples (24 samples).

On the left of the analyser are the waste and distilled water containers. The analyser constantly controls the level of these containers and issues the appropriate alerts if the distilled water is nearly empty or if the waste container is full.

Service manual

1.1.3. Reactions rotor and reading

The preparations are dispensed in an optical quality methacrylate reactions rotor thermos tated at 37ºC. The optical absorbance readings are taken directly on this rotor. Each reaction can be read for 10 minutes. The readings are taken as they are programmed in each measurement procedure. The reaction wells have been designed to enable the mixture of the sample and the reagent during the dispensing. Each rotor has 120 reaction wells. The length of the light path is 6 mm. The minimum volume required to take the optical reading is 200 uL. The wells have a maximum useful capacity of 800 uL. When the reactions rotor is completely full, the user must change it for one that is empty, clean and dry. The reactions rotors can be reused up to 5 times if they are carefully cleaned immediately after use. The Cleaning the semi-disposable reactions rotor section in the Installation and maintenance manual describes how to cle an the rotors. The us er has a test in the computer programme, which he or she may use to check the condition of the rotor. The rotor is driv en by a step-by-step motor with a transmission. A Peltier system with PID control thermostates the rotor at 37ºC.

An optical system integrated in the rotor takes the readings directly on the reaction wells. The light source is a 10 W halogen lamp. The detector is a silicon photodiode. The wavelength is selected by a drum with 9 positions available

for optic lters. The lters are easily ch an ged by the user from the exterior of the analyser, without the need for disassembling the lter drum. A step-by-step motor positions the drum. The optical system is capable of taking 1.25 readings per second, with or without a lter change in between. The light beam from the lamp passes through a compensated interferential lter to select the desired wavelength. It then passes through the rotor well and nally reaches the pho-

todiode, where the light signal is turned into an electric signal. A sophisticated analogical digital integrator-converter system converts the electric signal into a digital value with which the analyser obtains the absorbance values. The optical system continues to work when the general cover of the ana lyser is open, whereby the analyser can continue to take readings while the user handles, for example, the sample tubes or the reagent bottles. The rotor cover must be in place for the optical system to work correctly.

A detector tells the analyser of the presence of the cover. The analyser aborts the readi ngs if the user removes the rotor cover while the optical system is taking photometric measurements. If the rotor is not covered, the analyser informs the user so that he or she places the rotor cover when it sends samples to be analyzed.

1.1.4. Electronic system

The described elements are controlled by an electronic system based on a micropro cessor. The microprocessor has two exter nal communication channels to connect the instrument to the computer containing the application pro gram. The electronic system is made up of the following independent boards:

- Microprocessor board

- Photometric system board

- Needle conditioning board

- Fluid system interconnection board

- Arm interconnection board

- Rotor interconnection board

- Power supply board

1.1.5. Application program

The application program makes it possible to control all the operations of the analy zer. Fro m this program, the user can monitor the state of the analyzer and the work session, program parameters, e.g. technique parameters, prepare

the work session, prepare results reports, congure different analyzer options, activate various test utilities, prepare

and maintain the instrument and carry out internal quality control processes. The purpose of this manual is not to explain the fun ction ing of the user program. For detailed information to this re gard, please con sult the User Manual included with the analyzer.

1.2. FUNCTIONING OF THE ANALYSER

The A15 analyser is an automatic random access analyser specially designed for performing biochemical and turbidimetric clinical analyses. The analyser performs patient-by-patient analyses and enables the continual introduction of samples. The analyser is controlled from a dedicated PC that is permanently com muni cated to the instrument. The programme, installed on the computer, keeps the user constantly informed of the status of the analyser and the progress of the analyses. As results are obtained, the com pu ter shows them to the user immediately.

When a Work Session is begun, the ana ly ser proposes performing the blanks, calibra tors and controls programmed

Service manual

for the measurement procedures it is to carry out. The user may choose between performing the blanks and the calibra tors or not. If they are not performed, the analyser uses the last available memorised data. The controls can also be activated or not. During a session, while the analyser is working, the user can introduce new normal or urgent samples to be analyzed. Each time a new sample is added, the analyser automa tical ly proposes the possible new blanks, calibrators or controls to be performed. A work session can remain open for one or more days. When a session is closed and another new session is opened (Reset Session), the analyser again proposes performing the blanks, calibrators and controls. It is recommended that the session is reset each working day.

The analyser determines the concentrations of the analytes based on optical absorbance measurements. To measure

the concentration of a certain analyte in a sample, the analyser uses a pipette to take a specic volume of the sample

and the corresponding reagent, quickly thermostates them in the needle itself and dispenses them into the reactions rotor. The very dispensing speed together with the geometry of the reaction well causes the mixture to be shaken and the chemical reaction begins. In the bireagent modes, the reaction begins when the analyser later dispenses a second reagent in the same reaction well. The reactions can be biochemical or turbidimetric. In both cases, the reaction or the chain of reactions produced generate substances that attenuate certain wave len gths, either by absorption or by dispersion. Comparing the light in ten sity of a certain wavelength that crosses a well when there is a reaction and when

there is not a reaction can determine the concentration of the corresponding analyte. This comparison is quantied

with the physical magnitude called absorbance. In some cases, the concentration is a direct function of the absorbance, and in other cases, it is a function of the variation of the absorbance over time, depending on the analysis mode.

1.3. TRANSPORT AND RESHIPMENT OF THE ANALYZER

If the analyser is to be reshipped or moved using a transport vehicle, it is important to block the operating arm and use the original packaging to ensure that the apparatus is not damaged. To package the instrument, we recommend you follow the following instructions: (on the unpackaging instruc tions sheet)

Service manual

2. MECHANICAL ELEMENTS

2.1. Instrument breakdown

The physical structure of the analyzer can be broken down as follows:

-Operating arm

-X guide

-Y guide

-X carriage

-Y carriage

-Needle unit

-Dispensing system

-Thermostated probe

-Dispensing pump

-Tubes and containers

-Container level control sensors

-Racks tray with integrated washing station

-Waste pump

-Reactions rotor with integrated optical system

-Thermostated rotor and photometric system. This contains the electronic photo metric system board

-Lighting system

-Electronics box.This houses the electronic boards of the microprocessor, the power sup ply and the front indicator

-Main cover hinges

-Base

-Housings

-Upper casing

-Front housing

-Arm casing

-Main cover

The following is a brief description of each of the mechanical elements that make up the analyzer.

2.2. Description of the mechanical elements

2.2.1. Operating arm

This mechanism positions the dis pen sing needle appropriately during the prepara tion of the analyses. An encoder checks the vertical movement of the needle and a spring automatically stops it from falling in the case of a power cut. The dispen sing pipe and the electrical hoses of the arm pass through the front casing

(1) X GUIDE (2) X CARRIAGE (3) Y CARRIAGE (4) Y GUIDE (5) NEEDLE UNIT (6) CONTROL AND DISPENSING PIPE HOSE

The needle unit (5) supports the thermostated needle and can move on the Y carriage (3), which can move on the Y axes (4). The Y axes are supported by the X carriage, which moves on the X axes (1). In this way, the needle can

be moved in the three Cartesian directions of X, Y and Z. The hose (6) houses the Teon dispensing tube and all the

electrical ho se s of the arm.

2.2.1.1. X Guide.

(1) UPPER X TOOTHED AXIS (2) LOWER X AXIS (3) X START PHOTOSENSOR (4) BEARING X AXIS (5) X MOTOR (6) X START PHOTOSENSOR TAB (7) AXIS SUPPORTS

This consists of two supports (7) that hold the steel axes (1 and 2) on which the X carriage moves. The photosensor (3) indicates the start position of the X carriage movement. The motor X (5) is moved by a rack (2). The X carriage is supported by the second axis (2) by means of a bearing (4).

Service manual

2.2.1.2. X Carriage

(1) X CARRIAGE BODY (2) UPPER X AXIS - RACK (3) LOWER X AXIS (4) X MOTOR (5) Z MOTOR (6) ENCODER (7) XYZ INTERCONNECTION PCB (8) BEARINGS

The X carriage body (1) moves along the two axes (2, 3). The upper axis (2) acts as a rack. The X motor (4) is tted

with a pinion that moves the carriage. The X carriage also supports the interconnection PCB (7) and the Z motor (5). To enable the movement, it uses linear bearings (8).

2.2.1.3. Y Carriage

(1) Y CARRIAGE BODY (2) Y GUIDE AXES (3) Y MOTOR (4) BELT (5) BELT RETURN PULLEY (6) START PHOTOSENSOR (7) START TAB (8) NEEDLE UNIT (9) BEARINGS

The body of the Y carriage (1) moves along the two axes (2) on linear bearings (9). The said axes are supported by the X carriage. The movement is made by the Y motor (3) by the belt (4) and the return pulley (5). The start of the movement is controlled by the tab (7) and the start photosensor (6) located on the X carriage (10). The body of the Y carriage (1) also supports the needle unit.

Service manual

2.2.1.4. Needle unit

(1) Z GUIDE (2) RACK (3) Z MOTOR (4) ENCODER (5) TRANSMISSION AXIS (6) RETURN SPRING (7) THERMOSTATATION PIPE (8) CONTROL PCB (9) Y CARRIAGE

The Z guide (1) supports the thermostatation pipe (7) and the control PCB (8) where the heating elements are located,

together with the thermistor signal amplier and level detection and the Z axis start photosensor. The rack (2) supports

the Z guide (1) which crosses the Y carriage (9) on two bearings. The Z motor (3) is fastened to the X carriage (10)

and is moved by a transmission axis (5) tted with a pinion that acts on the rack. The return spring (6) acts on the

transmission axis and prevents the needle from falling in the event of a power cut: The encoder (4), which detects any obstruction to the movement of the thermostated needle (9) is located on the same axis and on the part of the motor.

2.2.2. Dispensing system

The dispensing pump dispenses the preparations through the thermostated needle. The needle is washed internally and exter nally at the washing station. The racks tray makes it possible to position the samples to be analyzed and the required re a gents. The level of the distilled water and waste containers is controlled by the analyzer by capacity.

2.2.2.1. Thermostated probe

(1) THERMOSTATATION PIPE (2) PCB (3) TEFLON DISPENSING TUBE (4) ELECTRICAL CONTROL HOSE (5) FASTENING NUT (6) REMOVABLE NEEDLE

The thermostatation pipe (1) preheats the reagent during dispensing. It is tted with two connectors at each end. The removable needle (6) is connected to one and the Teon dispensing pipe (3) is connected to the other, xed by the

fastening connector (5). The PCB (2) contains the thermostatation elements, the thermistor and associated circuits. The various thermistor and element action signals (3) pass through the hose (4).

2.2.2.2. Dispensing pump

(1) BODY (2) FLUIDIC CHAMBER (3) SEAL (4) SEAL SUPPORT (5) CERAMIC PISTON (6) PISTON SUPPORT (7) START DETECTION BARRIER (8) AXIAL BEARING (9) ENDLESS SCREW (10) MOTOR (11) START PHOTOSENSOR (12) PUMP NUT (13) PUMP-ELECTROVALVE TEFLON TUBE

Service manual

(14) 3-CHANNEL ELECTROVALVE (15) ELECTROVALVE NUT

The plastic body (1) joins the different elements that make up the pump. The transparent methacrylate uidic chamber (2) makes it possible to observe the ow of liquid through the pump. The support (4) fastens the seal (3). The ceramic

piston (5) dispenses by displacing a certain volume of liquid in the chamber. The piston is adhered to the support (6),

which moves alternatively by the rotation of the endless screw (9) xed to the motor axle (10). The barrier (7), joined

to the piston support, obstructs the photosensor (11) when the piston reaches its start position. The axial bearing (8) prevents any longitudinal displacement of the motor axle for greater precision in the dispensing operation. The 3-channel electrovalve (14) makes it possible to connect the pump chamber to the distilled water container or to the

thermostated needle. The Teon tube (13) connects the chamber to the electrovalve. It is connected to each of these

elements by the nuts (13) and (15).

2.2.2.3. Tubes and containers

(1) WATER CONTAINER (2) WATER CONTAINER LID (3) WATER CONTAINER TUBES FASTENING (4) WATER CONTAINER TEFLON TUBE (5) TEFLON TUBE FILTER (6) ELECTROVALVE NUT (7) SYSTEM LIQUID LEVEL SENSOR CABLE (8) LEVEL SENSOR (9) WASTE CONTAINER (10) WASTE CONTAINER LID (11) FAST COUPLING NUT (12) WASTE CONTAINER PVC TUBE (13) GROMMET (14) WASTE LEVEL SENSOR CABLE

The Teon tube (4) connects the distilled water container (1) to the electrovalve of the dispensing pump. This tube is installed at the end of the lter container (5). It is connected to the electrovalve of the dispensing pump through the nut (6) The Teon pipe passes through the rubber piece (3) in the lid (2) of the container, which fastens them in position.

The PVC tube (12) connects the waste extraction membrane pump to the waste container (9). The waste container lid (19) has a fast coupling nut (11) with automatic drip-proof closing when disconnected. All the tubes pass into the interior of the analyzer through the rubber grommet (13).

Service manual

2.2.2.4. Container level control sensors.

(1) LEVEL DETECTION SHEETING (2) SIGNAL CONNECTOR

The analyzer has a capacitance system to control the level of the distilled water and waste containers. For this, there is an emission plane (1) under the bottles where a signal is injected through the connector (2). The base supporting the bottles is above this. They have 2 rods that collect the signal and indicate the presence or absence of liquid.

2.2.2.5. Racks tray with integrated washing station.

(1) TRAY (2) WASHING STATION (3) LEVEL DETECTION SHEETING (4) WASTE PVC PIPE

The plastic injection tray (1) is part of the base of the instrument. The washing station (2) is installed on the right. The plate (3) detects the level of the dispensing needle. The PVC tube (4) connects the washing station drain to the waste extraction pump.

2.2.2.6. Washing pumps

(1) MEMBRANE WASTE PUMP (2) WASHING STATION-PUMP PVC TUBE (3) WASTE BOTTLE-PUMP PVC TUBE (4) SAFETY FLANGES

The needle washing system has a waste extraction pump (1). This is connected to the washing station by the PVC (2).

The pump expels the waste through the pipe (4) into the waste bottle. The pipes are fastened by two safety anges.

Service manual

2.2.3. Reaction rotor with integrated optical system.

The reactions rotor is thermostated at 37ºC. The optical system, made up of a lighting system and a photometric

system takes the readings directly on the rotor reaction wells. The lighting system has a halogen lamp, a lter drum

for the selection of the wavelength form the appropriate beam of light. The photometric system contains a silicon photodiode and the corresponding electronics to obtain a digital value that is proportionate to the light intensity received.

2.2.3.1. Thermostated rotor and photometric system

(1) METHACRYLATE ROTOR (2) HEATING CANAL (3) THERMAL INSULATION OF THE HEATING CANAL (4) PELTIER CELLS (5) HEATSINKS (6) FANS (7) TEMPERATURE PROBE (8) ROTOR CENTRING UNIT (9) ROTOR FASTENING SCREW (10) HOME ROTOR PHOTODETECTOR (11) BEARINGS (12) PINION (13) ROTOR MOTOR (14) ROTOR CROWN (15) MOTOR SEPARATOR (16) PHOTOMETRIC SYSTEM BOARD (17) ELECTRONIC BOARD SUPPORT COVER (18) OPTICS COVER (19) PHOTODIODE GAP CENTRING UNIT (20) ROTOR GAP (21) COVER DETECTOR (22) ROTOR AXLE

The dispensing system dispenses the reagents and the samples in the methacrylate rotor (1). The optical system measures the absorbance directly on the rotor wells. The aluminium heating canal (2) surrounds the rotor and keeps it at 37ºC. The canal is thermally insulated from the exterior by means of the moulded expanded polystyrene insulation (3). The Peltier cells (4), with their respective radiators (5) and fans, act on the canal to control the temperature. The sensor used to control the temperature is the probe (7). The methacrylate rotor is fastened to its centring unit

(8) by means of the screw (9). The centring unit is xed to the heating canal through the axis (22), which is tted on

bearings (11). The barrier obstructing the photosensor (10) when the rotor reaches its start position forms part of

the centring unit (8). The centring unit also acts as gearing. The pinion (12), xed to the motor (13), acts through the

crown (14), which also acts as a centring unit. The separator (15) does not allow the motor temperature to reach the heating canal. The electronic board of the photometric system (16) is housed in a cavity in the heating canal. The upper cover of this cavity (17) supports the electronic board. The seal (18) keeps the cavity hermetically closed

in the case of possible liquid spillage. The housing of the lter drum is closed at the bottom by the cover (18). The

part (19) centres the photodiode with regard to the lighting system and also acts as a grill to prevent the incidence of unwanted light. The grill (20) limits the light hitting the reactions rotor. The detector (21) tells the analyzer if the rotor cover is in position or not.

Service manual

2.2.3.2. Lighting system

(1) BODY (2) LAMP HOLDER (3) HALOGEN LAMP (4) LAMP HOLDER FASTENING (5) FILTER WHEEL (6) FILTER HOLDER (7) FILTER HOLDER NUT (8) MATCHED INTERFERENTIAL FILTERS (9) WHEEL AXLE (10) HOME PHOTODETECTOR (11) FILTER MOTOR (12) DIAPHRAGM (13) FILTER WHEEL WINDOW COVER (14) FILTER WHEEL (15) GAP

The aluminium body (1) is the structure that supports all the elements of the lighting system. The lamp holder (2), fastened to the body by means of the fastening system (4), keeps the halogen lamp (3) in position without the need

for adjustments. The lter drum (5) has 10 positions for optical lters. Position 0 must always be taken up by a covered lter. The other positions can be taken up by an interferential lter (8) or by other covered lters. No position in the drum must be left unoccupied. Each lter is tted on a lter holder (6) and fastened to it by the nut (7). The lter holders can be dismounted from the drum by simply pulling on them. The cover (13) allows easy access to the lter drum. The lter drum is fastened to the axle (9). This axle can be turned by the direct action of the motor (11). Its end

is guided by the bearing (14). The photosensor (10) indicates the start position of the drum. The light from the lamp,

limited by the diaphragm (12). The light passes through the lter drum, which selects the desired wavelength, and

through the aperture(15), which adapt the form of the light beam to the geometry of the rotor wells.

2.2.4. Electronics cover

(1) BACK COVER OF THE ELECTRONICS (2) MAINS SWITCH (3) FUSE HOLDER (4) ID LABEL (5) NETWORK CONNECTOR (6) COM1 CONNECTOR (7) COM2 CONNECTOR (8) HINGES

The metal cover (1) supports the mains switch (2) and the fuse holders (3), as well as the identication label (4). The

COM1 and COM2 connectors (6, 7) and the mains connector (5) are fastened to the electronics box. The cover(1) opens on 2 hinges (7).

Service manual

2.2.5. Main cover hinges

(1) HYDRO-PNEUMATIC SPRING (2) ARTICULATED STEEL STRUCTURE (3) COVER OPEN PHOTOSENSOR (on right-hand hinge only)

The two hinges enabling the raising of the main cover of the analyzer consist of an articulated steel structure (2) operated by a hydro-pneumatic spring (1). The right-hand hinge includes a photosensor (3) to detect whether or not the cover of the analyzer is open or closed.

2.2.6. Base

(1) LOWER PLASTIC CASING (2) BASE (3) WASHING STATION AND RACK TRAY (4) ARM UNIT (5) ELECTRONICS BOX (6) DISPENSING PUMP (7) REACTION ROTOR AND INTEGRATED OPTICAL SYSTEM (8) BOTTLE LEVEL DETECTION PLATE (9) LEVEL DETECTION PLATE (10) PUMP AND MICROPROCESSOR INTERCONNECTION BOARD (11) MAIN COVER HINGES (12) FRONT INDICATOR (13) ADJUSTABLE LEG

The base (2) on which all the elements of the analyser are xed is fastened directly to the lower plastic casing. The

rack tray and washing station form part of the base. The instrument stands on 4 rubber legs . The front right leg (13) is adjustable in height to adapt the instrument to the work surface.

Service manual

2.2.7. Casings

(1) FRONT CASING (2) UPPER CASING (3) MAIN COVER (4) LOWER CASING (5) ARM HOUSING (6) ROTOR COVER (7) RETURN SPRING COVER

The front casing (1) is fastened to the upper casing (2) and the upper casing is fastened to the lower casing (4). The top cover (3) is transparent and lets users see the analyser in operation with the cover closed.

3. ELECTRONIC SYSTEM

1. Description of the electronics of the A15 analyzer.

2. CPU Board (CIIM00026)

3. Power supply board and source (SP150 & CIIM00015)

4. Needle Board (CIIM00017)

5. Photometry Board (CIIM00027)

6. XYZ carriage interconnection board (CIIM00018)

7. Rotor interconnection board (CIIM00029)

8. Fluid interconnection board (CIIM00028)

9. Communications Board (CIIM00036)

10. Components relation

11. Information about auxiliar connector

12. Interconnection between boards

13. Schematic liquid circuit

Description of the electronics of the A15 analyzer.

The electronics of the analyzer are made up of different boards located at different points in the analyzer and dedica-

ted to specic functions. Its different location corresponds to functionality and performance criteria for the functioning

of the analyzer.

There are 8 different boards, which correspond to:

CPU Board (CIIM00026) Power supply board and source (SP150 & CIIM00015) Needle Board (CIIM00017) Photometry Board (CIIM00027) XYZ carriage interconnection board (CIIM00018) Rotor interconnection board (CIIM00029) Fluid interconnection board (CIIM00028) Communications Board (CIIM00036)

3.1 CPU Board (CIIM00026)

This is the brain of the machine, containing the microprocessor (H8/3003), responsible for controlling all the elements of the machine. The board has different data storage systems using either static RAM (U1 and U47), FLASH memory (U10) or EPROM (U9). The slot associated with the EPROM is used to check the functionality of the board and the recording of the MONITOR program in the production phases of the analyzer. The other two memories are associated with the normal functioning of the analyzer. The FLASH memory holds the application itself as well as different databases related to factory settings, adjustments, state of the rotor and possible extensions to the application.

The U21 device also exists on the board. This is a logical programmable device (FPGA) dedicated to the control of motors, mapped in register memory associated with end-of-run control, electrovalves, level sensing and control of the photometry-associated board (CIIM00027).

The motor control acts directly on the drivers corresponding to each of the analyzer’s axes (U28,U29,U30,U24,U25,U27) to act on the motor. The driver comprises the L6228 integrated circuit. The regulation of the current of each axis can

be congured by means of a DAC that sets the current set point independently (U26).

The action on the thermostatation systems of the rotor is carried out through H-shaped bridges based on MOS technology (U45) and controlled directly from the microprocessor. The action on the needle thermostatation system is through the Q4 transistor.

Service manual

Connector Function Pins

J1 Not available

J2 Connection to communications board

(CIIM00036)

J4 Connection to XYZ interconnection

board (home and encoder signals)

J5 Connection to XYZ interconnection

board (motor signals)

1 - V DC 2 - GND 3 - Tx0 4 - GND 5 - Rx0 6 - GND 7 - GND 8 - Tx1 9 - GND 10 - Rx1

1 - V DC 2 - GND 3 - Needle encoder 4 - Home motor Y 5 - Home motor X 6 - GND

1 - coil 2 motor X 2 - coil 2 motor X 3 - coil 1 motor Y 4 - coil 1 motor X 5 - coil 1 motor Y 6 - coil 1 motor X 7 - coil 2 motor Y 8 - coil 2 motor Z 9 - coil 2 motor Y 10 - coil 2 motor Z 11 - coil 1 motor Z 12 - coil 1 motor Z

J6 Connection to interconnection

board Rotor (home motor signals and photometry board control signals)

1 - 12 V 2 - GND 3 - DVALID 4 - DCLK 5 - DOUT 6 - DXMIT 7 - RANGE2 8 - RANGE1 9 - RANGE0 10 - TEST 11 - CONV 12 - GND 13 - CLKAD 14 - GND 15 - GND 16 - V DC 17 - V DC 18 - Rotor cover 19 - GND 20 - Rotor thermistor

21 - Home motor lter drum

22 - GND 23 - Home motor rotor 24 - Front red LED 25 - Front green LED

Connector Function Pins

J7 Connection to rotor intercon-

nection board (motor and Peltier signals)

J8 Connection to interconnec-

tion board uids (electrically

operated valve and pump signals)

J9 Connection to interconnec-

tion board uids (ceramic

pump home and level sensor signals)

1 - coil 2 motor lters 2 - coil 2 motor lters 3 - coil 1 motor lters

4 - coil 1 rotor motor

5 - coil 1 motor lters

6 - coil 1 rotor motor 7 - Peltier 8 - coil 2 rotor motor 9 - Peltier 10 - coil 2 rotor motor 11 - V(24 V) 12 - Peltier fans

1 - V(24 V) 2 - Waste pump 3 - V(24 V) 4 - Electrically operated valve 5 - coil 1 ceramic pump 6 - coil 1 ceramic pump 7 - coil 2 ceramic pump 8 - coil 2 ceramic pump

1 - Waste bottle sensor input 2 - System liquid sensor input 3 - Bottle detection signal 4 - Rack level detection signal 5 - Ceramic pump home 6 - V DC 7 - GND 8 - Instrument cover detection

J10 Connection to needle board 1 - V (12 V)

2 - GND 3 - Home motor Z 4 - Needle thermistor 5 - Rack level detection signal 6 - V (24 V) 7 - Needle thermostat elements 8 - NC

J11 Connection to supply board 1 - V (12 V)

2 - GND 3 - V (24 V) 4 - V DC 5 - Fan control 6 - Lamp control

Service manual

Analogical circuitry: The waste and system liquid sensors function through U6, U5 and U4, which generate and detect the signal responsible

for detecting the waste and system liquid. These signals are sent and received through the uid interconnection board

(connected to the CPU board by J9). The rack level detection is carried out in a similar way through U7, U8 and U2.

The signal injected to the base of the bottles goes to the uid interconnection board through J9 and is collected after it has been amplied by J10 (connection with the needle board). There is also a circuit for conditioning the signal of the

thermistor associated with the thermostatation of the rotor that is made up of the U1 and U2 circuits. The thermistor is connected to the rotor interconnection board, which is connected to the CPU board. TP1 - Waste pump control signal TP2 - Electrovalve control signal TP3 - Rotor thermistor signal TP4 - RESET TP5 - WATCHDOG TP6 - LSO_BOT bottle detection signal TP7 - Bottle signal TP8 - Needle detection signal TP9 - LSO needle detection signal TP10 - Attenuated LSO needle detection signal TP11 - IN1 Needle Peltier Driver TP12 - Needle resistance driver TP19 - ASL TP20 - HWR_L TP21 - LWR_L TP22 - WE_L TP24 - CS_FPGA_L TP25 - DVALID (photometry) TP26 - 12 Volts analogical TP27 - IN2 Needle Peltier Driver TP28 - EF Needle Peltier Driver TP30 - DOUT (photometry) TP33 - RANGE (photometry) TP34 - CLKAD (photometry) TP35 - Conditioned thermistor signal TP38 - DXMIT (photometry) TP39 - Analogical GND TP40 - Power GND TP41 - Power GND TP42 - Power GND TP43 - Digital GND TP44 - Digital GND TP45 - Digital GND

LIST OF LED DIODES

DL1 - Electrovalve driver DL2 - Waste pump driver DL3 - PELTIER heating DL8 - PELTIER cooling DL4 - Needle resistance driver

Service manual

3.2 Power Supply Board (CIIM00015)

This is made up of 2 different switched regulators and 1 voltage line that enable distribution of the power supply in accordance with the requirement of each subsystem.

Connector Function Pins

J1 24 V input 1 - 24V

3 - (GND)

J2 Output voltage of 6 V for lamp

supply

J3 Output voltage of 24 V, 12V,

5 V and fan and lamp control input

J4, J5 Fan output voltage of 24 V 1 - 24V

TP1 - Lamp voltage from 5.75 V <6V TP2 - 12V analogicals TP3 - 5V digital

1 - 12 V 3 - GND

1 - 36V 2 - GND 3 - 12V 4 - 5V 5 - ENABLE LAMP 6 - ENABLE FAN

2 - GND

List of LED diodes:

D4 - Indicates 5V activated D2 - Indicates 12V lamp activated D3 - Indicates 12V analogicals activated

Service manual

3.3 Needle Board (CIIM00017)

This board conditions the thermistor signal associated with the thermostatation of the needle, the preamplication of

the level detection signal and the Z home. It receives, from the needle unit, the thermostatation elements, the thermistor and the level signal detected by the needle itself.

The cables that join this board with the CIIM00026-01 board come from this needle.

Connector Function Pins

J1 CPU board connection

(CIIM0026)

TP1 - Needle signal

TP2 - Output preamplier needle signal TP3 - Output amplier thermistor signal

TP4 - Thermistor 12V - 12V voltage 5V - Voltage 5V AGND - GND

1 - GND POWER 2 - 12V analogical 3 - level sensor 4 - Home Z 5 - GND POWER 6 - Thermistor 7 - EARTH 8 - GND POWER 9,10 - Thermo elements.

Service manual

3.4 Photometry Board (CIIM00027)

This board also has the heart of the absorbance measuring system for the samples to be analyzed. It is made up of a photosensor and an associated analogical-digital conversion circuitry (DDC112).

Connector Function Pins

J3 Photometric board connection CIIM00029) 1 - 12 V

2 - GND 3 - DVALID 4 - DCLK 5 - DOUT 6 - DXMIT 7 - RANGE2 8 - RANGE1 9 - RANGE0 10 - TEST 11 - CONV 12 - GND 13 - CLKAD 14 - GND 15 - GND 16 - V DC

JP1 - soldering bridge - Solder only if the local oscillator and the U4 and U5 scales, respectively, are not present. JP2 - soldering bridge - as per JP1

JP3 - soldering bridge - joins together the analogical and digital frames

3.5 XYZ Interconnection Board (CIIM00018)

This board interconnects the CP1 board with the X carriage. It distributes the X and Y motor signals and transmits the home signals of the X and Y movements. It also sends the encoder signal to the CPU board.

Connector Function Pins

J1 Connection motor X

J2 Connection motor Y

J3 Connection motor Z

J4 C P U b o a r d c o n n e c t i o n

(CIIM00026)

J5 C P U b o a r d c o n n e c t i o n

(CIIM00026)

1 - coil 2 motor Y 2 - V DC 3 - coil 2 motor Y 4 - GND 5 - coil 1 motor Y 6 - encoder 7 - coil 1 motor Y 8 - home motor X 9 - coil 2 motor Y 10 - home motor X 11 - coil 2 motor Z 12 - GND

1 - coil 2 motor X 2 - coil 2 motor X 3 - coil 1 motor X 4 - coil 2 motor Z 5 - coil 2 motor Z 6 - coil 1 motor Z

Service manual

3.6 Communications Board (CIIM00036)

This enables communication with the exterior of the analyzer through a USB channel or a RS232 channel. It also includes an auxiliary RS232 channel for monitoring the functions of the analyzer during its execution.

Connector Function Pins

J1 CPU board connection (CIIM00026) 1 - V DC

2 - GND 3 - Tx0 4 - GND 5 - Rx0 6 - GND 7 - GND 8 - Tx1 9 - GND 10 - Rx1

CN1 - USB Connector P1 - Main RS232 connector P2 - Auxiliary RS232 connector

3.7 Rotor interconnection board (CIIM00029)

This interconnects the rotor with the CPU board.

Connector Function Pins

J1 Rotor motor connection

J2 Power connection with board CIIM00026 1 - Coil 2 rotor motor

2 - Coil 2 rotor motor 3 - Coil 1 rotor motor

4 - Coil 1 motor lters

5 - Coil 1 rotor motor

6 - Coil 1 motor lters

7 - Peltier

8 - Coil 2 motor lters

9 - Peltier

10 - Coil 2 motor lters

11 - V24 (fans) 12 - GND (fans)

J3 Connection with photometry board CIlM00027 1 - 12 V

2 - GND 3 - DVALID 4 - DCLK 5 - DOUT 6 - DXMIT 7 - RANGE2 8 - RANGE1 9 - RANGE0 10 - TEST 11 - CONV 12 - GND 13 - CLKAD 14 - GND 15 -GND 16 - V DC

J4 Connection motor lters 1 - Coil 1

2 - Coil 1 1 - Coil 2 2 - Coil 2

J5 Peltier connection 1 - Peltier black

2 - Peltier, red

J6 Fan connection 1 - Fan, black

2 - Fan, red

J7 Connection signal with board CIM00026 1 - 12 V

2 - GND 3 - DVALID 4 - DCLK 5 - DOUT 6 - DXMIT 7 - RANGE2 8 - RANGE1 9 - RANGE0 10 - TEST 11 - CONV 12 - GND 13 - CLKAD 14 - GND 15 - GND 16 - V DC 17 - V DC 18 - Rotor cover sensor 19 - GND 20 - Thermistor signal

21 - Home lter drum

22 - GND thermistor 23 - Home rotor 24 - Front LED (red) 25 - Front LED (green) 26 - Ambient sensor

Service manual

Connector Function Pins

J8 Rotor cover sensor connection 1 - Cable 1

2 - Cable 2

J9 Thermistor connection 1 - Cable 1

2 - Cable 2

J10 Front LED connection

J11 Connection Home motor lters

J12 Connection Home rotor

J13 Connection fans 1 - Fan, black

1 - Front LED, red 2 - Front LED, black 3 - Front LED, green

1 - Photo sensor, yellow 2 - Photo sensor, black 3 - Photo sensor, red

2 - Fan, red

List of LED diodes

DL1 Peltier DL2 Home rotor motor

DL3 Home lter motor

DL4 Rotor cover

3.9 Pump interconnection board (CIIM00028)

The pump interconnection board interconnects the CPU board with the dispensing pump, the waste pump, the electrovalve, the bottle level sensor and the instrument cover. List of LED diodes

Connector Function Pins

J1 Waste sensor 1 - Waste sensor

J2 Connection signal with board CIIM00026 1 - Waste sensor

2 - System liquid sensor 3 - LS/waste signal 4 - Needle liquid detection signal 5 - Home dispensation pump 6 - V DC 7 - GND 8 - Instrument cover

J3 System liquid sensor 1 - System liquid sensor

J4 LS/waste sensor signal 1 - System liquid signal

J5 Needle liquid detection signal 1 - Needle liquid detection signal

J6 Dispensation pump home 1 - Photo sensor, yellow

2 - Photo sensor, black 3 - Photo sensor, black

J7 Electrovalve 1 - White cable

2 - White cable

J8 Power connection with board CIIM00026 1 - 24 V electrovalve

2 - GND 3 - Waste pump 4 - Waste pump 5 - Dispensation pump coil 1 6 - Dispensation pump coil 1 7 - Dispensation pump coil 2 8 - Dispensation pump coil 2

J9 Waste pump 1 - Waste pump, red

2 - Waste pump, black

J10 Waste pump 1 - Coil 1

2 - Coil 1 4 - Coil 2 5 - Coil 2

J11 Instrument cover 1 - Photo sensor, yellow

2 - Photo sensor, black 3 - Photo sensor, red

DL1 Electrovalve DL2 Waste pump DL3 Home pump DL4 Instrument cover

Service manual

3.10 Component relation

Component Reference Home detector TCST1300 3 way electrovalve LVM115-6A-2U-1 from SMC Cover magnet Neodimio D4x5 Lamp 6V 10W Gilway L6402 Pump motor NMB23ML-C343V-1 Rotor motor NMB17PMKD18V Washing system motor SP600-EC-LC-L Filter wheel motor NMB23ML-C343V-1 X motor NMB23ML-C343V-1 Y motor NMB17PMKD18V Z motor NMB17PMKD18V Rotor peltier TES-06339 Probe temperature sensor B57861-S302-F40 Rotor temperature sensor B57861-S302-F40 Hall efect sensor RELE REED A041 1D 2H 0500 Electronic box fan SUNON KD2406PTS1 Rotor fan SUNON KD2404PKS2

3.11 Auxiliar channel information

The rear left part of the instrument is where the communications cables are connected. There are two connections, the COM1 and the COM2. The COM1 is the main connection from the analyser to the computer. This connection should be always present to analyser run propertly.

there are two connection types: A - Cable type USB B - Cable type RS-232

Only connect one cable type.

Service manual

The labeled connector COM2 is the auxiliar connector. This connector is used to communicate with a second serial port in the computer. The function of this cable is to monitor the internal states of the analyser.

To show all this information, the user should execute the program: windows HyperTerminal and congure with the

following parameters: Programa: Inicio\Todos los programas\accesorios\comunicaciones\hyperterminal

Baud Rate: 38400 Número de bits: 8 Stop bits: 1 Paridad: none

Onces is congured and connected the cable, switch on the analyser. In this moment will appear in the HyperTerminal

screen information about the analysers mode and the different executes states. In the initializate mode, the analyser do an internal checking for each element, if someone has any error then in the screen will show the element that fails. The following lines shows an exemple of the instructions during an initialization, (this information could change with

the improvements of the rmware) :

BIOSYSTEMS A15

Firmware initialization Firmware Version: A15 User V3.12 Serial Number: 831050311

FLASH functions transferred to RAM Interrupt Vectors transferred to RAM Interrupts enabled

Checking rmware integrity

Checking program checksum: Checksum correct! Program Checksum=0x5039 Size=427100

Checking A15 conguration checksum: Checksum correct! Conguration Checksum=0x179C Size=856

Checking A15 conguration backup checksum: Checksum correct! Conguration backup Checksum=0x179C Size=856

Loading A15 Conguration from FLASH Conguration in FLASH is correct

Adjustments loaded:

Temperature correction for Rotor=0.50 Temperature correction for Probe=0.00

System Liquid Detection=30

Waste Detection=29

Sensitivity of level detection=110 Origin X=60

Origin Y=280 Origin Z=430

Tray Reference X=675 Tray Reference Y=10 Washing station X=360

Washing station Y=5 Washing station Z=450

Washing station Ext X=360

Washing station Ext Y=95 Washing station Ext Z=540 Reactions Rotor X=110 Reactions Rotor Y=1044

Reactions Rotor Z=600

Rotor Distance between the dispensation point and the optic

system=610

Rotor Position correction regard to the dispensation point=98

Rotor Position correction regard to the optic system=-4

Filters Wheel correction=0

Filters and their Integration Times:

Filter 1=000 Integration Time= 20ms ( 40) Reference Time= 0ms ( 0) Filter 2=340 Integration Time=205ms (400) Reference Time= 0ms ( 0) Filter 3=405 Integration Time= 51ms (100) Reference Time= 0ms ( 0) Filter 4=505 Integration Time= 51ms (100) Reference Time= 0ms ( 0) Filter 5=535 Integration Time= 51ms (100) Reference Time= 0ms ( 0)

Filter 6=560 Integration Time= 51ms (100) Reference Time=

0ms ( 0)

Filter 7=600 Integration Time= 51ms (100) Reference Time=

0ms ( 0)

Filter 8=635 Integration Time= 51ms (100) Reference Time=

0ms ( 0)

Filter 9=670 Integration Time= 51ms (100) Reference Time=

0ms ( 0) Filter 10=000 Integration Time= 20ms ( 40) Reference Time= 0ms ( 0)

TI/LB Hystoric:

F[01]: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 F[02]: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 F[03]: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 F[04]: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 F[05]: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

F[06]: 00000000 00000000 00000000 00000000 00000000 00000000

00000000 00000000 00000000 00000000 F[07]: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 F[08]: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 F[09]: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 F[10]: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

F[01]: 000 000 000 000 000 000 000 000 000 000 F[02]: 000 000 000 000 000 000 000 000 000 000 F[03]: 000 000 000 000 000 000 000 000 000 000 F[04]: 000 000 000 000 000 000 000 000 000 000 F[05]: 000 000 000 000 000 000 000 000 000 000

F[06]: 000 000 000 000 000 000 000 000 000 000

F[07]: 000 000 000 000 000 000 000 000 000 000 F[08]: 000 000 000 000 000 000 000 000 000 000 F[09]: 000 000 000 000 000 000 000 000 000 000 F[10]: 000 000 000 000 000 000 000 000 000 000

Zmax Reference=1130

- Pediatric Offset=0

- 13mm Offset=0

- 15mm Offset=0

- Reagent Offset=0

- Central Reagent Offset=0

A15 Mechanical History

- X axis: 0 Steps

- Y axis: 0 Steps

- Z axis: 0 Steps

- Rotor: 0 Steps

- Filter Wheel: 0 Steps

- Ceramic Pump: 0 Steps

- Washing Station Pump: 0 Cycles

- Washing Station Valve: 0 Cycles

- Ceramic Pump Valve: 0 Cycles

- Lamp: 0 Minutes

A15 Statistics

- Biochemistry Tests: 0

- Turbidimetry Tests: 0

- Biochemistry Bireagent Tests: 0

- Turbidimetry Bireagent Tests: 0

- Predilutions: 0

- Initial/Final Washings: 0

- Washing Solution Washings: 0

- System Liquid Washings: 0

- New Rotor: 0

- Bireagent Contaminations Solved: 0

9: Start Rotor Readings

Notes: Use only in Service Mode

after a Base Line Test.“ Rotor Read 1: Choose Filter + 2: Choose Filter User Mode Test G: Test

Notes: Use only after a Worklist in Stand By.“

This tests dumps all the preparations“ parameters received and the photometric“

readings. Finally performs a general test“

of the analizer.“ After this test press New Rotor for continue working.“

DDC112/Photometry

D: Choose Mode

- DDC112 internal test mode

- DDC112 Photometry Mode

- Stop +: Integration Time +0.5ms

-: Integration Time -0.5ms

Notes: Only works in Service Mode

This tests performs continuous“ readings with the DDC112.“ Remember stop the test for “ continue working.“

Caution: Dont’t abuse of this functions while the analizer is running.“

Stand by mode!

LC TxS Rx Inicio modo servicio!

Setting racks layout

Tray Ref. X=675 => Distance from tray reference to tray corner X=2190 Tray Ref. Y=10 => Distance from tray reference to tray corner Y=30

Absolute position of tray corner X=2865 Absolute position of tray corner Y=-20

Generating Zmax Map:Ok “ CPU settings: MDCR=c4;ABWCR=0;ASTCR=ff“

BioSystems A15“

Hello World“

A15 MAGIC KEYS“

H: Help“ R: Rotor Temperature“ P: Probe Temperature S: Level Scales A: Last A15 Stress Results

L: Actual Sensitivity of Level Detection

N: Enable Level Detection Debug

K: Power Supply On

Buzzer Control B: Buzzer On b: Buzzer Off Encoder E: Generate Encoder Error I: Enable Encoder IRQ Rotor Reading 1: Choose Filter + 2: Choose Filter -

Hardware Initialization

Programming FPGA XC2S50PQ208

- Clearing FPGA program memory: OK!

- Programing FPGA: OK FPGA XCS50PQ208 is programmed

Initialization of level detection system

- Generating Sensitivity Map:Ok

Level Detection Mode:Normal

Pediatrico: Rack 1 2 3 4

173 141 129 126 123 125 129 151 161 129 118 115 113 115 125 141

158 128 114 111 108 111 121 138

156 127 113 108 107 110 118 139 156 127 112 108 107 110 117 145 155 126 112 108 106 110 121 146 161 128 113 110 106 112 121 151 160 132 112 111 106 113 121 151 167 133 115 112 108 114 124 156 171 136 117 116 113 119 129 163 177 145 123 122 116 124 136 172 202 160 139 135 133 138 155 190

Tubo 13/15mm: Rack 1 2 3 4

162 141 126 123 119 123 132 147

149 132 115 115 111 115 121 137

145 126 110 111 107 112 115 136 148 127 111 108 106 110 117 136

148 127 112 111 105 110 118 144

Service manual

149 128 111 111 107 113 119 145

154 126 113 110 108 111 119 144

155 128 115 111 110 113 124 145

161 130 114 112 110 115 125 148 161 133 117 112 112 116 125 154 169 140 123 121 118 122 133 161 190 155 134 133 128 134 146 176

Reactivos: Rack 1 2 3 4

163 151 152 183 156 141 143 174

152 138 140 173 150 134 137 172

154 135 138 176 156 139 143 181 160 138 145 187 166 145 149 194 173 150 156 204

194 172 173 228

Initializating Motors

- Axis Z in HOME

- Axis Y in HOME

- Axis X in HOME

- ROTOR in HOME

- FILTERS WHEEL in HOME

- CERAMIC PUMP in HOME Motors Initializated

Optics Initialization

- Filter correction=0

- Rotor correction=98 Rotor Lect. correction=-4

- Used wells:0

L: Actual Sensibility of Level Detection N: Activate additional information of level detection (only internal use) K: Deactivate the power supply B: Activate the buzzer b: Deactivate the buzzer E: Generate an encoder error (only internal use) I: Activate the encoder interrupt (only internal use)

1: Increase the lter wheel position 2: Decrease the lter wheel position

9: Mesure the whole rotor, step by step

G: Once nish a work list, push the G and send to the

hyperteminal more detailed information of the work list managemnet

D: Show the mesure depending on the number of key pressed 1st press: activate the internal test DDC112, always show the same count number 2nd press: activate the normal mesure DDC112, show the count number mesured 3th press: stop the DDC112 mesure +: Increase the integration time in 0.5ms

-: Decrease the intergration tie in 0.5ms

- Check DDC112..OK (FPGA 8Mhz Clock: OFF)

- DDC112 test: OK! (Result => 0046387)

Optics Initializated

Generating Pattern: 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 Generating Gate: 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 1 1 0 0 0 OK Z Axis Initialization

- Axis Z in HOME Z Axis initializated

Penc:111111111000000000| OK

Z Axis Initialization

- Axis Z in HOME Z Axis initializated

Probe AA

- X:X=Xcal+-1“

- Y:Y=Ycal+0“ AAEnd Peltier Cells and Drivers Test

- Probe Peltier Driver Test: Ok! (Not implemented)

- Rotor Peltiers Driver Test: Ok!

Hardware Initializated

There are a few keys that work with the Hyperterminal, to press some keys the analyser give information about some element, the following keys has the function:

H: Help, help, shows the help text R: Rotor Temperature, shows the rotor temperature P: Probe Temperature, shows the needle temperatare S: Level Scales, shows the scales mesures in % A: Last A25 Stress Results

3.12 Interconnection between boards

The following diagrams show the connections between the boards and the different elements that make up the analyzer.

Service manual

3.13 Schematic liquid circuit

Service manual

4. SERVICE PROGRAM

The service program is used for the adjustment, checking and maintenance of the different components of the analyzer. It is not supplied with the instrument, it is supplied to authorised technical services only. The personal of the Technical Service must install it on the user’s computer in order to carry out the service requirements.

Once the tasks have nalised, the program must be uninstalled. To install the program, follow the instructions

on the installation CD ROM called Service. The original password for using this program is A15. The password can be changed from the service program itself. If the service personnel forget the password, the original password can be reinstalled by deleting the hidden le code.A15 from the application directory and relaunching the program. Once the password has been introduced, the analyzer serial number is given and the name of the operator is requested (by default Operator1). Press the Accept button and the main program appears. The

different functions of the service program are classied in the following categories:

- Adjustments: These make it possible to make different parameter adjustments required for the correct functioning of the analyzer.

- Tests: Tests for checking the functionality of the a na ly zer.

- Utilities: Different technical utilities, such as, for example, washing or priming the dispensing sys tem

or changing an optical lter.

- Registers:This enables the management of past adjustments, tests, incidences, repairs and maintenance of the instrument.

- Monitor:These enable the low level communication with the analyzer to load new versions of the program in the ash memory of the analyzer (rmware) or to consult the internal parameters of the instrument.

An emergency stop button (STOP on a red background) will be accessible at all times, and when pressed, it switches off the analyzer and closes the application quickly.

4.1 Initialising the analyser

To initialise the analyser in service mode, rst launch the A15 Service application. The program rst of all requests a user or technician ID to be used in the program. Depending on the type of user identied, access to

the different parts of the program will be allowed or denied. The following screen appears:

For full access, enter the following codes: Name (login): SAT Password: A15

Once the user has been identied correctly, the service program starts to initialise the analyser.

This screen appears when the analyser has nished the previous operations done to enter the SERVICE mode. If

the complete hardware of the analyzer is in correct conditions, the result “Hardware initiated correctly» displays. If any hardware element presents an operational problem, it will appear “Hardware not initiated completely” in the screen, and the element that is not working correctly will be shown. In order to close the screen and continue working, you should press the Accept button. In order to get a printed copy of this initialization report, you should press the Print button. NOTE: If an error has been reported and the technician continues working with the service program, he must consider that there is a hardware element that is not working properly.

Service manual

4.2. ADJUSTMENTS

These make it possible to make different parameter adjustments required for the correct functioning of the analyzer. All the values to be adjusted have certain limited ranges, indicated by the service program. These values are also given in an appendix at the back of this manual. If, after varying any of the parameters within its permitted range, the analyzer is not tuned up, it indicates that the corresponding system is broken and in need of repair.

4.2.1. Adjustment of the needle thermostatation system

This screen adjusts the needle thermostatation in such a way that the dispensing temperature of the reactions

is as close as possible to 37ºC. To make this adjustment, the analyzer must be initialised. The liquid to be dispensed is taken from the system liquid container or from the bottle of reagent selected by the technician. The technician must measure the temperature of the dispensed liquid with a thermometer calibrated at 37ºC. The program shows the control set point temperature, which is the parameter that must be adjusted for the dispensing temperature to be correct. This parameter must be different from 37ºC. When the technician so indicates, the analyzer dispenses thermostated distilled water on a certain position in the racks tray shown on the screen. The technician must measure the temperature of the water with the calibrated thermometer and introduce the

temperature on the screen. The analyzer automatically modies the set point temperature in accord with the

temperature measured with the thermometer for the dispensing temperature to be 37ºC. The technician can modify this set point temperature proposed by the program. On pressing Adjust, the analyzer thermostates the needle with the new set point and, when the technician so requests, performs new dispensing operations.

Each time the set point temperature is modied, wait 1 minute before performing new dispensing operations

for the needle temperature to become stabilised. The technician must repeat this process until the dispensing temperature is as near as possible to 37ºC. Pressing the Store button, the analyzer stores the current value of the adjusted set point temperature. Pressing the Cancel button keeps the last stored value and the current value is not stored. Pressing the Restore button restores the initial screen input value.

4.2.2. Adjustment of the rotor thermostation system

This screen makes it possible to adjust the thermostation system of the rotor in such a way that the reactions temperature is 37ºC. To make this adjustment, place a well rotor in position and ensure that the analyzer has

been initialised. The rotor can be automatically lled with distilled water by pressing the corresponding button. Once lled, the technician must wait a few minutes for the rotor to be thermostated. The temperature in the

rotor wells must be measured with a temperature calibrated at 37ºC through the dispensing hole of the rotor cover. A button makes it possible to turn the rotor in increases of 15 wells to change the well on which the measurement is being taken. The program shows the control set point temperature, which is the parameter that must be adjusted for the temperature of the rotor to be correct. This parameter must be other than 37ºC. The technician must measure the temperature of the water with the calibrated thermometer in the wells and enter

the temperature on the screen. The analyzer automatically modies the set point temperature in accord with

the temperature measured with the thermometer for the rotor reactions temperature to be 37ºC. The technician can modify this set point temperature proposed by the program. On pressing Adjust, the analyzer thermostates the rotor with the new set point. Each time the set point temperature is modied, wait 5 minutes before performing new dispensing operations for the rotor temperature to become stabilised. The technician must repeat this process until the rotor temperature is as near as possible to 37ºC. Pressing the Store button, the analyzer stores the current value of the adjusted set point temperature. Pressing the Cancel button keeps the last stored value and the current value is not stored. Pressing the Restore button restores the initial screen input value.

Service manual

4.2.3. Adjustment of the positioning of the operating arm

This screen makes it possible to adjust the horizontal positioning (X, Y) of the arm. The arm housing must be removed to see the position of the needle. Before making the adjustments, visually check the verticality of the needle. If necessary, carefully straighten it up ensuring you do not damage it. On the screen, select the point at which you wish to adjust the horizontal positioning. On pressing the Adjust button the arm initialises and positions itself over said point. The technician has buttons to move the arm step by step over the horizontal plain (X, Y) and vertically (Z). The arm can also be moved introducing a certain number of absolute movement steps. These absolute movements of the arm must be made with the needle at its highest position so as not to damage it (coordinate 0). The technician must lower the needle to the adjustment point and adjust its horizontal position. When the position is satisfactory, save the current coordinates (X, Y) by pressing the Store button. Pressing the Cancel button keeps the last adjustment values stored. Pressing the Restore button restores the initial screen input values. At all times, the screen shows the current coordinates of the arm for the selected point, the last coordinates stored and the initial screen input coordinates, as additional information for the technician. The technician may repeat the procedure to adjust the positioning of the arm at the different possible adjustment points. These points are as follows:

(1) Origin. Vertex of the self-centering plate of the needle. (2) Rack tray Adjust point located in the right part at rear of the tray (3) Washing station. Centre of front part of washing station. (4) Reactions rotor. Dispensing point on the rotor reactions cover. (5) Zmax (on tray reference) The same point of rack tray

If you select the point of origin, automatic adjustment is possible in this position by pressing an AutoAdjustment button (the process can take around 3 minutes).

4.2.3.1 Adjustment of X, Y and Z position for reagent and pediatric racks

Note: the pediatric rack is a 15 diameter rack with pediatric adapters and wells

This process is used to adjust each rack individually in the three coordinates, X, Y and Z as much for pediatric as for reagent racks. For that, each rack of the tray will be adjusted to positions 1 and 12 for pediatric racks and 1 and 10 for the reagent ones.

There are two tools to carry out the adjustment process: one to adjust the reagent rack and the other for the pediatric rack.

In order to carry out this XYZ rack adjustment, you may use the screen or keyboard buttons. Movements using keyboard:

- X axis movements: right and left cursor button

- Y axis movements: up and down cursor button

- Z axis movements: page up and page down button

Adjustment process using the tool

Place the tool as per the photograph. Tools have been designed so that the square (pointed with arrows in the upper photograph) corresponds with the position of the center of the well or bottle. And so that the tool lower level corresponds with the well or bottle bottom.

Steps to follow:

1. Select the type of adjustment which you wish to carry out: adjustment of the tray (XYZ) of the pediatric

diameter rack or of the reagent rack.

2. Press the button Adjust.

Service manual

3. Activate the option Adjust with the tool

4. Select the number of rack to start the adjustment process. By default, it starts with number 1.

5. Place the rack in the selected position, place the tool in the well 1 of the rack with and press Start.

6. Probe will automatically descend to a distance over the tool, in order to avoid colliding with it. If necessary,

move the probe with XY movements (screen or keyboard) to the center of the tool opening. Always press Accept (although XY movements were not necessary)

7. The probe will descend some further steps through the tool opening.

From this position of approach, you may start the adjustment of values:

8. Move the probe just by X movements (screen or keyboard) until the probe touches the tool. When touching

the tool, this will make an acoustic warning. Press Accept X adjustment.

9. The new adjusted X value will appear in the upper table.

10. The probe will automatically come back to the center of the tool opening.

11. Move the probe just by Y movements (screen or keyboard) until it touches the tool. When touching the tool,

this will make an acoustic warning. Press Accept Y adjustment.

12. The new adjusted Y value will appear in the upper table.

13. The probe will automatically come back to the center of the tool opening and will descend some further

steps.

14. Move the probe just by Z movements (screen or keyboard) until it touches the tool lower part. This will make

an acoustic warning. Press Accept Z adjustment.

15. The new adjusted Z value will appear in the upper table.

16. The arm will automatically move to position 10 or 12, depending on the type of rack selected. Repeat steps

6 to 14.

17. Once the adjustments in position 10 or 12 are made, the arm is parked so the rack can move.

18. Place the rack in the following position of the tray, press Start. Repeat steps 6 to 14 to carry out the ad-

justments in the every position of the rack tray.

19. Once the adjustments are nished, they have to be kept in the instrument, so press Save.

Adjustment process without using tool

1. Select the type of adjustment which you wish to carry out: adjustment of the tray (XYZ) of the pediatric

diameter rack or of the reagent rack.

2. Press the button Adjust.

3. Deactivate the option Adjust with the tool

4. Select the number of rack to start the adjustment process. By default, it starts with number 1.

5. Place the rack in the selected position, place the well or bottle in well number 1 of the rack and press Start.

6. Probe will automatically descend to a distance over the well/bottle, in order to avoid colliding with it. Then,

probe has to be put into the well/bottle just a little. In order to do so:

- If probe is not centered in XY and out of the well or bottle opening: move the probe just by XY movements (screen or keyboard) before carrying out Z movements to get the probe down.

- Then, get the probe slightly down with Z movements (screen or keyboard) just to make the adjustment of the center easier.

From this position of approach, you may start the adjustment of values:

7. Adjust the well/bottle center: to do so, move the probe by X and Y movements (screen or keyboard)

8. Adjust the bottle or well bottom: to do so, move the probe by Z movements (screen or keyboard) until it reaches the bottom. To check it: move the bottle/well up and down.

9. To nish the XYZ adjustment, press Accept.

10. The new adjusted XYZ values will appear in the upper table. (Nevertheless, they are not saved in the instrument yet).

11. The arm will automatically move to position 10 or 12, depending on the type of rack selected. Repeat steps 6 to 9.

12. Once the adjustments in position 10 or 12 are carried out, the arm is parked so the rack can be moved.

13. Place the rack in the following position of the tray, press Start. Repeat steps 6 to 9 to carry out the adjustments in the every position of the rack tray.

14. Once the adjustments are nished, adjustments have to be kept in the instrument, so press Save.

Adjustment of Z-axis of tubes

When the adjustment of the tray of pediatric racks is selected, it appears another adjustment: the Z relation between pediatric and tube.

In order to carry out this adjustment, follow the following steps:

1. Place a diameter 15 rack in position 2 of the tray, with a tube in rack position 1.

2. Insert a value in the box of Z pediatric-tube relation. This value shows the separation steps between a pediatric well and a primary tube.

3. Press Start.

4. Check that the probe has not collided to the bottom of the tube.

5. Move the probe by Z movements (screen or keyboard) until it reaches the well bottom.

6. Once the adjustments are nished, adjustments have to be kept in the instrument, so press Save.

4.2.4. Adjustment of the positioning of the rotor

This screen enables the adjustment of the positioning of the rotor with regard to the dispensing point and the optical system. One or the other is selected by means of two different tabs.

4.2.4.1. Centering of the rotor with regard to the dispensing point

The analyzer initialises the rotor and positions the rst rotor well at the currently programd dispensing position.

The technician has buttons to move the rotor step by step to adjust, if necessary, this position and buttons for

ner adjustment of the X coordinate over the dispensing point. At all times, the screen shows the current dispensing coordinate on the rst well and of the X axis position, the last coordinate stored and the initial screen

input coordinate, as additional information for the technician. When this is satisfactory, the current coordinate of the dispensing point of the rst well can be stored by pressing the Store button. Pressing the Cancel button keeps the last stored value and the current value is not stored. Pressing the Restore button restores the initial screen input value.

4.2.4.2. Centering of the rotor with regard to the optical system

This adjustment is necessary only if the Rotor Centering Adjustment has been carried out with regard to the dispensing point (4.1.4.1.). This adjustment must be made with the rotor cover in position. The analyzer initia-

lises the rotor and lls the rst 3 wells of the rotor with distilled water. Next, step-by-step optical readings are

Service manual

made through these wells at the wavelength selected by the technician. Once the readings have ended, the program shows a graph of the light intensity measured on the rotor steps. On this graph, the program indicates at which points the optical readings are made on each of the 3 wells when the analysis is made, with the

coordinate of the reading point of the rst well currently programd in the analyzer. If necessary, the technician

can move the reading points over the graph jointly using two buttons. The optimum reading point is that which globally maximises the light intensity for the three wells. At all times, the screen shows the current coordinate

of the reading in the rst well and the last coordinate stored, as additional information for the technician. When the position is satisfactory, the current coordinate of the reading point of the rst well can be stored by pressing

the Store button. Pressing the Cancel button keeps the last stored value and the current value is not stored.

4.2.5 . Adjustment of the positioning of the lter wheel

This adjustment must be made with the rotor cover in position. The analyzer initialises the rotor and the lter wheel and lls the rst rotor well with distilled water. Next, it takes optical readings through this well, turning the lter wheel step by step, with a certain integration time as indicated by the technician (the concept of integration

time is explained in the section on photometric adjustments). Once the readings have ended, the program shows

a graph of the light intensity measured on the steps of the lter wheel. On this graph, the program indicates at which points each of the lters is positioned when optical readings are taken when the analysis is carried out, with the coordinate of the positioning of the lter 0 currently programd in the analyzer. If necessary, the technician

can move the reading points over the graph jointly using two buttons. The optimum reading point is that which

globally maximises the light intensity for all the lters. At all times, the screen shows the current coordinate of the lter 0 and the last coordinate stored, as additional information for the technician. When the position is satisfactory, the current coordinate of the positioning of the lter 0 can be stored by pressing the Store button.

Pressing the Cancel button keeps the last stored value and the current value is not stored.

4.2.6. Adjustment of the level control scales

This screen makes it possible to set the level control scales with the empty waste and distilled water containers (0% capacity) and when they are full (100% capacity). The maximum capacity of the containers is approximately 3L. The technician must choose whether he wishes to set the distilled water or waste container scales, with the corresponding container full or empty. According to the requested adjustment, the corresponding container, full or empty, must be placed in position and the Adjust button pressed. Based on the settings made, the analyzer automatically adjusts the scales. On pressing the Store button, the analyzer saves the new values of the adjus- ted parameters. Pressing the Cancel button keeps the last stored values and the current values are not stored.

Service manual

4.2.7. Adjustment of the level detection sensitivity

This screen allows tting the sensitivity of the capa city level detection system of the probe. In order to make the adjustment, rst of all you have to select the typs of racks: metal lled racks (grey color) or plastic racks

(black color).

Then place on it the following conguration of racks and samples:

• Paediatric Rack: place 4 paediatric glasses in positions 5, 6, 17 and 18 with 150 uL of liquid system.

• Rack of 13/15mm sample: place 4 tubes in positions 5, 6, 17 and 18 with 500 uL of liquid system.

• Rack of reagents: place 2 bottles of 20mL in positions 5 and 6 with 2mL of liquid system.

It is possible to see a graphic with the position of the tubes and racks in the screen photo. When pressing the Adjust button, the arm takes some sensitivity readings automatically until detecting the water in each one of

the tubes. Once this operation is nished, the arm is parked in its original position and it shows the sensitivity

results of each one of the tubes. Move rack to position 5 and repeat the adjustment. Once these second rea-

dings are nished, the program calculates the average of all sensitivities; the result is the average sensitivity. The technician should notice that the sensitivity values of each tube have to be similar; otherwise, he should

repeat the whole measurement. Repeat this adjustment per each rack type. The sensitivity value can also be introduced manually for each rack in the corresponding box.

Pressing the button Save, the analyser saves the new adjusted sensitivity value. Pressing the button Close, the old value stays. Pressing the button Restore, the initial value of entry to the screen is restored. A manual sensitivity value can be inserted in the corresponding box.

4.3. TESTS

Various tests make it possible to check that the different components of the analyzer function correctly.

4.3.1. Motor tests

Through these tests, the technician can check the correct functioning of all the analyzer motors step by step. The screen makes it possible to choose the motor to be tested and the test that is to be carried out. The analyzer uses the following motors step by step:

- X axis of the operating arm.

- Y axis of the operating arm.

- Z axis of the operating arm.

- Dispensing pump

- Rotor

- Filter wheel

All the motor tests can be performed without the covers and housing of the analyzer. After the verications,

the operating arm always returns to its resting position. To test the motor of the dispensing pump, the arm is positioned over the washing station. It is convenient for the dispensing system to be primed so that the piston does not function dry. The following is a description of the different tests that can be performed.

4.3.1.1. Initialization test

This test veries the start detector of each of the motors.

4.3.1.2. Movement test

This test displaces any of the mobile components to the desired point along its range of functioning, introducing the corresponding absolute coordinate or moving it step by step. The speed and acceleration of the movement are those used in the normal functioning of the analyzer.

Service manual

4.3.1.3. Loss step test

This test makes it possible to check if a motor misses steps when performing a certain sequence of movements. The test can be carried out with the speed and acceleration used in the normal functioning of the analyzer or with these magnitudes increased by 10% to check the functioning safety margin.

4.3.1.4. Stress mode test

This test makes it possible for a certain sequence of movements to be performed continually. The technician can program the duration of the test, which can be cancelled at any moment. Depending on the motor selected, there is a minimum stress mode time (but in no case is it higher than 50 seconds).

4.3.1.5. Z axis secu ri ty systems test

The Z axis of the operating arm has an encoder to detect if there have been missed steps as a result of a collision with the needle. In the case of a power failure, a mechanical system automatically raises the needle. On selecting the corresponding options, the analyzer checks the functioning of each of these devices.

4.3.1.6 Maximum Z verication test

This test checks that the needle does not collide with the bottles on the rack tray. Select the rack type (reagent, paediatric, 30 mm or 15 mm), the position of the rack on the tray and the position of the bottle or well on the rack. Press the Start button to move to the selected position and check if the needle collides with the bottle or well or if there is space between the needle and the bottle. Repeat the process in the positions required by the user.

4.3.2. Diaphragm pumps and electrovalves test

The analyzer uses a 3-way electrovalve to manage the dispensing operations. The washing system of the needle uses a 2-way electrovalve and two diaphragm pumps. The screen makes it possible to choose the device to be tested and the test that is to be carried out. The devices that can be tested independently are:

- 3-channel electrovalve of the dispensing pump.

- 2-channel electrovalve of the washing system.

- Washing system diaphragm pumps

Service manual

To carry out these tests, the dispensing system should be primed. The following is a description of the different tests that can be performed.

4.3.2.1. Functioning test

This test makes it possible to manually switch the selected device.

4.3.2.2. Stress mode test

This test makes it possible for a certain sequence of device switching to be performed continually. The technician can program the duration of the test, which can be cancelled at any moment.

4.3.3. Needle self-centering system test

This test makes it possible to check the functioning of the needle self-centering system. During its initialisation, the analyzer uses this system to check the presence of the needle and its verticality and automatically correct small deviations. The test consists of simply running this process. The technician can remove the housing of

the arm to observe the test. On the nalisation of the test, the program shows the deviation (x, y) found in the

motor steps.

4.3.4. Needle level detection system test

This test checks the functioning of the system for detecting the capacity of the needle in bottles of reagent and sample tubes. This test checks the functioning of the system for detecting the capacity of the needle in reagent bottles and sample wells. The test can be performed in any position on the tray.

First select the rack type, then the position of the rack on the tray and, nally, the position of the bottle/well on

the rack. Press the Test button and the program will move the arm to the indicated position and check whether or not liquid is detected, depending on whether the bottle is full or empty. Repeat the test as many times as the user considers necessary.

4.3.5. Needle thermostatation system test

This screen makes it possible to check that the dispensing temperature of the reactions is around 37ºC. To make this adjustment, the analyzer must be initialised. The technician must measure the temperature of the dispensed liquid with a thermometer calibrated at 37ºC. The program shows the set point temperature of the current control. This parameter must be different from 37ºC. When the technician so indicates, the analyzer dispenses thermostated distilled water on a certain position in the racks tray shown on the screen. The technician must measure the temperature of the water with the calibrated thermometer and introduce the temperature on the screen. The program indicates if the temperature measured is within the tolerated error margins and stores this value for the test result reports. The liquid to be dispensed is taken from the system liquid container or from the bottle of reagent selected by the technician.

Service manual

4.3.6. Needle rotor thermostatation system test

This screen makes it possible to check that the temperature of the rotor reactions is 37ºC. To make this test, the

analyzer must be initialised. The methacrylate rotor can be automatically lled with distilled water by pressing the corresponding button. Once lled, the technician must wait a few minutes for the rotor to be thermostated.

The temperature in the rotor wells must be measured with a temperature calibrated at 37ºC through the dispensing hole of the rotor cover. A button makes it possible to turn the rotor in increases of 15 wells to change the well on which the measurement is being taken. The program shows the set point temperature of the current control. This parameter must be other than 37ºC. The technician must measure the temperature of the water with the calibrated thermometer in the wells and enter the temperature on the screen. The program indicates if the temperature measured is within the tolerated error margins and stores this value for the test result reports.

4.3.7. Photometry tests

This screen contains a set of tests to check the functioning of the optical system. The tests are classied under

different tabs. First of all, the base line and darkness count tests must be made in order to be able to carry out the remaining tests. To perform these tests, the analyzer must be initialised.

The optical system has a photodiode that generates an electrical current proportionate to the light intensity on it. time. An AD converter converts the accumulated load into a digital value called count number, between 0

and 1048576. During normal functioning, the analyzer automatically adjusts the integration time for each lter when the analysis begins and after initialisation. When the rst photometry test is performed, the integration

times are also automatically adjusted. These times are adjusted in such a way that the count number of the base line for each wavelength is as near as possible to 950000. In this way, the dynamic range of the detection

system is adapted to the light intensity present at each wavelength. The lter wheel has 10 positions. Position 0 must always contain a covered lter so that the analyzer can perform the darkness adjustment. Positions 1 to 9 can be used for optical lters.

4.3.7.1. Base line and integration times

When this test is run for the rst time, the analyzer lls the rst 3 rotor wells with distilled water. The analyzer automatically adjusts the integration times and makes a base line with each of the available lters in each of the 3 wells. The program shows the current integration times for each of the lters and the average for the 3

wells of the count numbers obtained with each lter. The screen shows the corresponding alarms in the case

of anomaly. It is also possible to access a screen where it is possible to manually vary the integration times to check their effect on the count numbers. And another screen where it is possible to assign calculated in-

tegration times as reference integration times for each lter. This screen is recommended when a lter or the

lamp is physically changed. After performing the test, the analyzer continues to take optical readings using the automatically adjusted integration times.

Service manual

4.3.7.2. Darkness counts

The program shows the current integration times for each lter. On running the test, the analyzer positions the covered lter and measures the darkness counts with each of the integration times. Each time an optical reading

is taken, the analyzer subtracts these darkness counts from the count numbers measured to obtain the light intensity. The program shows the values obtained and issues the corresponding alarms in case of anomaly. The values should be around 4100 - 4300. All the count numbers shown by the tests given as follows have the darkness counts subtracted.

4.3.7.3. Repeatability without moving the lter wheel

To perform this and the following tests, the base line and darkness count test must have rst of all been performed. This test takes absorbance readings during 1 minute with the lter wheel in xed position. The technician can choose the rotor well on which he wishes to take the readings and ll it with the liquid he desires. He can choose which wavelength he wishes to use. The test can also be performed with the lter covered. When the

readings end, the screen graphically displays the count numbers obtained and the absorbances with regard to the corresponding base lines. The program also shows the averages and/or standard deviations of the count numbers and the absorbances.

4.3.7.4. Stability

This test takes absorbance readings during 30 minute with the lter wheel in xed position. The technician can choose the rotor well on which he wishes to take the readings and ll it with the liquid he desires. He can choose which wavelength he wishes to use. The test can also be performed with the lter covered. The test can

be cancelled at any time. When the readings end, the screen graphically displays the count numbers obtained and the absorbances with regard to the corresponding base lines. The program also shows the averages and/ or standard deviations of the count numbers and the absorbances.

4.3.7.5. Repeatability moving lter wheel

This test takes absorbance readings during 10 minute moving the lter wheel randomly. The technician can choose the rotor well on which he wishes to take the readings and ll it with the liquid he desires. The test can

be cancelled at any time. When the readings end, the screen graphically displays the count numbers obtained

and the absorbances for each lter with regard to the corresponding base lines. The program also shows the averages and/or standard deviations of the count numbers and the absorbances for each lter.

Service manual

4.3.7.6. Absorbance measurement

This test enables individual absorbance readings. The technician can choose the rotor well on which he wishes

to take the readings and ll it with the liquid he desires. He can choose which wavelength he wishes to use.

The screen shows the count number obtained, the absorbance with regard to the corresponding base line, the value of the base line.

4.3.7.7. Reactions rotor check

The user can use this test to check the optical status of a reactions rotor. He or she can choose the optical lter

with which the test is to be performed. The technician must place the rotor in the analyzer and press the Test button. If the Automatic Fill option has been chosen, the analyzer lls the 120 rotor wells with distilled water and then makes a base line on each well with the chosen lter. The analyzer graphically displays the absorbances related to the average of all the wells and tells the technician the state of the rotor (optimal, adequate or unusable). After the test, the user must remove the rotor of the analyzer, empty it and dry it completely before using it for analyses.

4.3.8. Level control scales test

This screen makes it possible to check the functioning of the level control scales of the waste and distilled water containers. The technician must select which scales he wishes to check and place a certain amount of liquid in the corresponding container. On pressing the Test button, the screen shows the level of liquid measured by the analyzer(only 0 % and 100%)

4.3.9. Covers detection test

This test makes it possible to check the functioning of the different detectors incorporated in the analyzer.

- Open detector of the general cover of the analyzer. Rotor cover presence detector.

The technician can manipulate the corresponding components, for example, open and close the cover of the analyzer and the screen shows the state of the detectors in each case.

Service manual

4.3.10. PC-Analyzer communications channel test

On pressing the Test button, the computer attempts to establish communication with the analyzer. The program tells the technician if it has been possible or not. The technician can select Automatic Conguration or Manual Conguration. In the case of the latter, he can dene the Port and the Speed.

4.3.11. Global stress mode of the analyzer

This test makes it possible to continually reproduce work cycles of the analyzer similar to those made during the preparation and reading of reactions in a normal working routine, but dispensing at the washing station instead of the rotor. It is necessary for the dispensing system to be primed so that the piston does not function dry. All the racks must be removed from the racks tray. This test can be made without the covers and housing of the analyzer. The technician can program the number of cycles he wishes (1 cycle = 15 seconds). The test

can be cancelled at any time. Once the test has been launched, the screen provides regular information about the current status of the process. If an error occurs during the process, the test ends and the screen displays a message indicating the element causing the error. Partial stressing of the elements of the analyser is possible. The following elements can be stressed partially:

• X axis

• Y axis

• Z axis

• Reactions rotor

• Filter wheel

• Dispensation pump

• Membrane pumps

• 2-way electrvalve

• 3-way electriovalve

4.3.12. Photometry tool

This option is used with the Photometry tool (AC15222). It is used for automate the reading process of the tool. To use the photometry tool folow the next stetp:

1. Switch on the analyzer.

2. Run the service programme. (The older version to use the tool is the 4.1)

3. Left the analyzer switch on initialized with the service programme for 20 minutes, to preheat the lamp.

4. Select the test menu and Photometry tool option.

5. Press the Load Parameters button.

6. Insert the CD-ROM and select the le ReferenciaUtilFotometria.bin. Push Accept button.

7. Insert the tool (1) in the place of the rotor.

8. Press the Read ABS button.

9. Press the Report button to print the results report.

Service manual

4.4. UTILITIES

The program contains various technical utilities. These utilities are also accessible from the user program.

4.4.1. Disassembly of the dispensing needle

On clicking on the Disassemble Needle button, the operating arm positions itself over the rack tray. The program alerts the technician to remove any object positioned under the arm. On clicking OK, the needle descends and the technician can remove it to work with it or change it. To remove the needle, unscrew it by holding the

top tting. If, while handling the needle, the carriage rises due to the pressure made by the technician, press

the Lower Needle button for the needle to descend once again. Once the needle has been reassembled on the analyzer, press the Park button for the needle to rise. It performs the self-centering test and the arm nally returns to its parked position. These operations must be done with utmost care since they are carried out with the analyzer cover open and the needle may be contaminated. Laboratory gloves must always be used.

4.4.2. Fluid system supply

On pressing the Test button, the analyzer lls the conduits of the dispensing system and the washing station with distilled water. To perform this operation, the operating arm is moved to the washing station. The technician can choose whether he wishes to prime the dispensing system, the washing system or both.

Service manual

4.4.3. Cleaning of the dispensing system

On pressing the Wash button, the analyzer washes the dispensing system internally and externally. To perform this operation, the operating arm is moved to the washing station. The technician can choose between performing the wash with distilled water or wash solution. In the case of the latter, the analyzer asks the technician

to place a bottle of wash solution in stead of the distilled water container or to ll the latter with wash solution.

Once the wash has been performed, the analyzer asks for the distilled water container to be put back in position. Finally, the analyzer primes the system with distilled water.

4.4.4. Changing the lamp

When entering the screen, it is possible to choose between: Changing or checking the lamp. When a new lamp is installed, this utility must be used to notify the analyzer that the lamp has been changed and optimize

the luminosity of the photometric system. The lamp must be changed with the analyzer in sleeping mode. If the analyzer is on standby mode, the program shuts it down automatically. The lamp must never be touched

with ngers. Once the new lamp has been installed and the covers of the optic and rotor put back, access the

change lamp utility and press the Test button. The program starts up the analyzer, checks the light intensity of the optical system, shuts down the analyzer and then requests the technician to remove the lamp holder again and replace it again turning it 180º on the axis of the lamp. If the temperature of the lamp holder is high, wait until it cools down or use pincers to hold it. The program starts up the analyzer again, measures the light intensity of the optical system again, compares the light intensity in both possible positions and chooses the greatest luminosity. If it is the current position, it tells the technician that the test is complete. If the best position were the previous one, the program shuts down the analyzer and asks the technician to remove the lamp holder and replace it, turning it 180º on the axis of the lamp, returning the lamp to its initial position. If the option selected at the beginning was to Check the Lamp, the process is the same but without shutting down the analyzer at the beginning.

4.4.5. Conguration of the lter wheel

This screen enables the modication of the analyzer lter wheel. The wheel has 10 positions. Position 0 must always contain a covered lter so that the analyzer can perform the darkness adjustment. Positions 1 to 9 can be used for optical lters. All the positions of the wheel must be occupied for it to work correctly. The positions that do not contain an optical lter must be occupied by a covered lter. The analyzer includes as standard 8 optical lters in positions 1 to 8 and two covered lters in positions 0 to 9. If one of the lters is to be changed,

select the desired position of the wheel and press the Change Filter button. The analyzer automatically posi-

tions the lter wheel appropriately so that the technician can change the lter through the window of the optical system. Next, if it is different, introduce the wavelength of the new lter that has been installed. If the lter is covered, introduce value 0. On closing the screen, the analyzer asks if the lters have actually been physically

changed and a series of warnings are given to the technician telling him he must bear in mind whether or not

he has changed a lter.

4.4.6. Demonstration mode

On pressing the Start button, the analyzer activates some of its mobile components, imitating functioning during

a work routine. The activated mechanical components are the operating arm, the reactions rotor and the lter

wheel. On pressing the Cancel button, the analyzer nishes the current cycle and returns to its rest position.

Service manual

4.4.7 Read/load adjustments and cycles

From this screen, it is possible to read the current adjustments that the analyser is using by pressing the button Read Adjustments.

It is allowed to save these adjustments in a le. The technician selects the name and location of this le.

Also from this same screen and with the button Load Adjustments, the technician is allowed to select an ad-

justment le and to load it in the analyzer. Once the adjustment loading is made, the analyser turns off and

the application is closed. When reinitiating the application, the new loaded adjustments will be already active.

From the rmware version 2.80, the programme counts the number of cycles of each element and the task of

the analyser. From this menu, it is possible to read the cycles completed by the analyser. The screen displays the said cycles with the corresponding units.

The programme automatically saves a copy of the adjustments and cycles read in a le. This le is located in

the following folder:

c:\Program les\A15 Service\Adjustments\

When a physical element of the analyser has to be changed, e.g. the Z axis belt, the counter must be reset to zero for it to correspond to the number of cycles actually stored in the analyser. To perform this operation, select the box of the element that is to be initialised and enter the number of cycles in the enabled box. Then press the Load cycles button. Using the Load adjustments button, this screen also enables the technician to select an adjustments le and load it in the analyser. When the adjustments are loaded, the cycles are also loaded. Perform this operation when

a CPU board has to be changed. This avoids having to completely readjust the analyser; only the following

sections will have to be readjusted:

• Scales

• Level detection sensitivity

• Needle thermostatation

• Rotor thermostatation

4.4.8 Change the rotor type

In this screen the type of rotor is introduced. Each rotor comes labelled with a letter in its top part. Select in this screen the type of rotor to use. For rotors marked with A letter, only select the letter. For the rotors marked with other letters, select OTHERS and then introduce the light path that will come it within the box of rotors or of the distributor.

Service manual

4.5. REGISTER

This enables the management of past adjustments, tests, incidences, repairs and maintenance of the instrument.

4.5.1. Introducing the analyzer serial number

The technician can enter the analyzer serial number so that it appears on printed service reports. If an entered serial number is changed, the service records are reinitiated. In this case, the technician can store all the

previous data in a le.

The technician can enter his name so that it appears on the printed service reports.

4.5.2. Service Reports

The program can display and print various service reports. The printed reports contain the analyzer serial number and the name of the current technician.

Reports are stored organised by: Adjustments, Tests, Utilities, Monitor and Summary of actions and tasks carried out. In all cases, it is possible to select the actions carried out within a range of dates chosen by the technician. The technician can enter short descriptions of the incidences that may happen in the analyzer and the repairs and maintenance operations that may be performed to the instrument in the Observations box.

4.5.3. Language change

This makes it possible to choose the language used in the service program.

Service manual

4.5.4. Users

Two types of user can be created with different access levels:

· SAT. This user has full access to the programme. This user has permission to create and/or delete other users.

· User. This user has restricted access to the programme. This user can only perform the tests and run

the utilities. He/she can not make any adjustments or load any previously saved adjustments les or change the rmware version of the analyser.

From the Users menu, it is possible to create, delete and change users. The Change password option is for each user to change his own password.

4.6. MONITOR

These enable the low level communication with the analyzer to load new versions of the program in the ash memory of the analyzer (rmware) or to restore the default adjustment parameters.

The rmware of the analyzer resides in a permanent ash memory. The change of this program can be made

through the computer without the need for changing the memory chip. Once the program has changed, the analyzer is restarted with the new version of the program. While the copy process is being performed, the screen indicates the percentage completed. To load the new version, press the Start button, previously indicating where the program is located using the Open button. First of all, the current content of the ash memory is deleted and then the new program is loaded. This operation may take several minutes. There is also the option to Restore Default Adjustments, selecting the option and pressing Start. If the technician wants the analyzer to enter monitor mode (e.g. because the analyzer does not respond because the rmware was incorrectly loaded, he may do so by shutting down the analyzer, pressing the Force Monitor button and then rebooting. Once the new programme has been loaded or the default adjustments have been restored, exit the monitor by pressing the Close button.

4.7 User’s program

In this section, the service options in the user program will be described. These options are intended to congure the user’s access level. Each section explains how to manage and create different levels of access to the user program of the analyser.

When the program is installed for the rst time, there is not a created user and access to the program is complete.

4.7.1 Conguration of the level of access to the analyser

To activate the option of level of access to the analyser, the rst time you should enter as administrator, whose

values are:

Name of user: admin access key: A15

with this screen, the application with the operation by passwords is congured. The rst time that the program is activated, it forces the user to change the initial password.

It is possible to create three types of user with different access levels:

Service manual

• Operator, is the user with a lower level of access to the application. He can only do working sessions, reports

of current and historical results, and validate quality control results. In the screens of programming of techniques and contaminations, he can look up programming values, but he can not modify any parameter. He can not

delete results or alarms. This user has total access to the rack and prole programming and to the analyser’s conguration (except for changes of lters). He can change his own password.

• Supervisor, is the user with a medium access level. This user has got the same privileges as the operator

user’s and, in addition, he has got permissions to modify the programming of techniques in the calibration

parameters and the control values. He can create a restricted number of new techniques, that is dened at

the moment of creating such user and that it is a default setting of 5. He can also modify the programming of

contaminations and change the analyser’s lters. He can change his own password.

• Administrator, is the user with total access to the analyser’s functions. He can create new users -as much at

supervisor as at operator level-, eliminate or modify users. When creating supervisor users, he has to indicate the maximum number of new techniques that can create. He can activate or deactivate Work Without Passwords

(option within the Conguration menu). He can also activate/deactivate the working without cover detection (this option is useful for the technical service to make verications without needing to let the cover down). This

option activates solely when the passwords are active.

When users are created, the access is limited to different parts of the program. When starting the program, an

identication of the user is requested, by the user name and a password, and then the program will automatically

restrict the different parts of the program depending on the access level permitted. Whenever you want, you can change the user by means of the option Change of user from the User menu. It is also allowed to eliminate users already created. Each user is capable of changing his password. All these options can be reached from the user menu.

4.7.2 Reagent Consumption

In order to access the consumption of reagents, it is rst necessary to congure the program with the option

of working with passwords. The administrator user is the only one that can access this menu -this option is deactivated for any other user. In order to generate a list of the consumption of reagents, the administrator has to introduce the dates between which he wants to know the consumption. For this, it appears a screen like this:

Such option creates two les of results, one in text format .txt and the another one in excel format .xls. These les will be located at directory within the application directory, it will usually be:

c:\Program Files\A15\Reagents

and the contents of the le shows similar this:

REAGENT CONTROL CONSUME REPORT

Initial Date: 02/11/2004 Final Date: 02/12/2004

Test Blank Prep. Calibrator Pre Control Prep. Patient Prep. Total Prep. Vol. R1 (uL) Vol. R2 (uL) glucose 1 0 0 5 6 1332 0 alt 1 0 0 3 4 888 0 bilirrubin 9 0 0 23 32 7104 3552Re- agents

Service manual

5. MAINTENANCE AND CLEANING

First of all, this chapter gives a step-by-step description of the different operations required for both the preventive maintenance and repair of the analyzer. The following are basic recommendations for the preventive maintenance of the instrument. Finally, a series of instructions for care and cleaning are given.

5.1. MAINTENANCE OPERATIONS

5.1.1. Housings and covers

5.1.1.1. Removing the needle unit casing

The needle unit has two casings xed with four screws each

a) First remove the dispensing needle b) Remove the screws that hold the casings in position. c) Remove the upper casing by lifting upwards. d) Remove the lower casing by pulling downwards.

5.1.1.2. Removing the front housing

a) Remove the grommets on either side of the casing. Pull on the grommets, not on the hoses. b) Remove the screws that hold the casing in position from the front. c) Move the needle unit to its forward centre position. d) Remove the casing by pulling it upwards and to the front.

5.1.1.3. Removing the main cover

a) Open the analyzer cover. b) Remove the two bottom screws that hold the cover to each hinge. c) Pull the cover upwards.

Service manual

5.1.1.4. Removing the upper casing

a) Remove the front housing. b) Remove the main cover.

c) Remove the screws as shown in the following gures.

d) Remove the casing by pulling it upwards.

Service manual

5.1.1.5. Removing the spring protector

a) Remove the three screws at the rear b) Pull the protector upwards.

5.1.2. Operating arm

5.1.2.1. Fully removing the operating arm

a) Remove all the analyzer housing.

b) Disconnect the connector (1) that goes to the board that goes to the needle unit and cut all the anges required. c) Disconnect the Teon dispensing pipe (2). d) Remove the cover that covers the X carriage interconnection board (3). Cut the anges that hold the at bands

and disconnect them from the board.

e) Unscrew the four studs that fasten the two X guide axes and which are located on the arm supports.

f) Pull the two guide axes as shown in the gure.

5.1.2.2. Changing the arm hose

a) Remove all the analyzer housing.

b) Disconnect the connector (1) that goes to the board that goes to the needle unit and cut all the anges required. c) Disconnect the Teon pipe at both ends (needle and electrovalve) (2). Cut all the anges that guide the pipe to the

electrovalve.

d) Remove the cover (3). To do so, open the electronics box at the rear and remove the fastening clips. Disconnect

the connector that goes to the CPU board and the earth connection (6).

e) Unscrew the ange screw (4). f) Replace the hose, connect and replace the anges.

Service manual

5.1.2.3. Changing the X motor

a) Remove all the analyzer housing. b) Unscrew the studs (1). c) Remove the rack (2) and let the arm rest on its front part. d) Remove the cover and the interconnection board (3). e) Remove the screws (4) and remove the motor. f) Fit the new motor without fully tightening the screws. g) Replace the rack. h) Adjust the pinion (5) with the rack and tighten the screws.

i) Tighten the rack studs and t the interconnection board and cover.

100

BioSystems A-15 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual