YOKOGAWA WE440 User manual

User’s
Manual Model WE440
Phosphate Analyzer
IM 12Y18A04-01EN
IM 12Y18A04-01EN
1st Edition

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IM 12Y18A04-01EN 1st Edition : Oct. 04, 2019-00
uIntroduction
Thank you for purchasing the WE440 Phosphate Analyzer.
This Instructor’s Manual contains all essential information for the user to make full use of WE440.
Please read the following respective documents before installing and using the WE440.
The related documents are listed as follows.
General Specications
Contents Document number Note
Model WE440 Phosphate Analyzer GS 12Y18A04-01EN Online manual
“EN” in the document number is the language code.
User’s Manual
Contents Document number Note
WE410, WE420, WE430, WE440
WET CHEMISTRY ANALYZER
Safety Precautions and Protection of Environment
IM 12Y18A00-01EN Attached to the product
(printed manual)
Model WE440 Phosphate Analyzer IM 12Y18A04-01EN Online manual (This manual)
“EN” in the document number is the language code.
An exclusive User’s Manual might be attached to the products whose su󰀩x codes or option
codes contain the code “Z” (made to customers’ specications). Please read it along with this
manual.
You can download the latest documents from our website. Scan QR code.
http://www.yokogawa.com/an/wet-chemistry-analyzers/download/
Media No. IM 12Y18A04-01EN 1st Edition : Oct. 2019 (YK)
All Rights Reserved Copyright © 2019, Yokogawa Electric Corporation

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nNotes on Handling User’s Manuals
• Please provide the user’s manuals to your end users so that they can keep the user’s
manuals for convenient reference.
• Please read the information thoroughly before using the product.
• The purpose of these user’s manuals is not to warrant that the product is well suited to any
particular purpose but rather to describe the functional details of the product.
• No part of the user’s manuals may be transferred or reproduced without prior written
consent from YOKOGAWA.
• YOKOGAWA reserves the right to make improvements in the user’s manuals and product at
any time, without notice or obligation.
• If you have any questions, or you nd mistakes or omissions in the user’s manuals, please
contact our sales representative or your local distributor.
nDrawing Conventions
Some drawings may be partially emphasized, simplied, or omitted, for the convenience of
description.
Some screen images depicted in the user’s manual may have di󰀨erent display positions or
character types (e.g., the upper / lower case). Also note that some of the images contained in this
user’s manual are display examples.
nTrademark Acknowledgments
• All other company and product names mentioned in this user’s manual are trademarks or
registered trademarks of their respective companies.
• We do not use TM or ® mark to indicate those trademarks or registered trademarks in this
user’s manual.

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uSafety Precautions
n Safety, Protection, and Modication of the Product
• In order to protect the system controlled by the product and the product itself and ensure
safe operation, observe the safety precautions described in this user’s manual. We assume
no liability for safety if users fail to observe these instructions when operating the product.
• If this instrument is used in a manner not specied in this user’s manual, the protection
provided by this instrument may be impaired.
• If any protection or safety circuit is required for the system controlled by the product or for
the product itself, prepare it separately.
• Be sure to use the spare parts approved by Yokogawa Electric Corporation (hereafter
simply referred to as YOKOGAWA) when replacing parts or consumables.
• Modication of the product is strictly prohibited.
• The following safety symbols are used on the product as well as in this manual.
WARNING
This symbol indicates that an operator must follow the instructions laid out in this manual in order
to avoid the risks, for the human body, of injury, electric shock, or fatalities. The manual describes
what special care the operator must take to avoid such risks.
CAUTION
This symbol indicates that the operator must refer to the instructions in this manual in order to
prevent the instrument (hardware) or software from being damaged, or a system failure from
occurring.
CAUTION
This symbol gives information essential for understanding the operations and functions.
NOTE
This symbol indicates information that complements the present topic.
This symbol indicates Protective Ground Terminal.
nWarning and Disclaimer
The product is provided on an “as is” basis. YOKOGAWA shall have neither liability nor
responsibility to any person or entity with respect to any direct or indirect loss or damage arising
from using the product or any defect of the product that YOKOGAWA can not predict in advance.

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uCE marking products
nAuthorized Representative in EEA
The Authorized Representative for this product in EEA is Yokogawa Europe B.V. (Euroweg 2,
3825 HD Amersfoort, The Netherlands).
n Identication Tag
This manual and the identication tag attached on packing box are essential parts of the product.
Keep them together in a safe place for future reference.
nUsers
This product is designed to be used by a person with specialized knowledge.
nHow to dispose the batteries:
This is an explanation about the EU Battery Directive. This directive is only valid in the EU.
Batteries are included in this product. Batteries incorporated into this product cannot be removed
by yourself. Dispose them together with this product.
When you dispose this product in the EU, contact your local Yokogawa Europe B.V.o󰀩ce.
Do not dispose them as domestic household waste.
Battery type: Manganese dioxide lithium battery
Notice: The symbol (see above) means they shall be sorted out and collected as ordained in the
EU Battery Directive.

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Model WE440
Phosphate Analyzer
CONTENTS
IM 12Y18A04-01EN 1st Edition
uIntroduction....................................................................................................i
uSafety Precautions ......................................................................................iii
uCE marking products..................................................................................iv
1. General Information ................................................................................. 1-1
1.1 Startup Procedure............................................................................................. 1-1
1.2 General Product Description........................................................................... 1-2
1.2.1 User Interface..................................................................................... 1-3
1.2.2 Menus Display ................................................................................... 1-4
1.2.3 Measurement Mode Display.............................................................. 1-4
1.2.4 Analysis Reaction Principle ............................................................... 1-6
1.2.5 Fluids Storage.................................................................................... 1-6
1.2.6 Calibration Standard .......................................................................... 1-6
1.2.7 Reagents Required............................................................................ 1-6
1.2.8 Reagent Consumption....................................................................... 1-6
2. Installation................................................................................................. 2-1
2.1 Mounting the Instrument.................................................................................. 2-1
2.2 Plumbing Connections..................................................................................... 2-2
2.2.1 Installing Peristaltic Pump Head Tubing ............................................ 2-3
2.2.2 Installing the Reagents ...................................................................... 2-4
2.3 Connecting Power to the Analyzer ................................................................. 2-4
2.3.1 Analog Outputs Connections............................................................. 2-6
2.3.2 Alarm Connections ............................................................................ 2-6
2.3.3 Inputs Signal Connections ................................................................. 2-9
2.3.4 Communication Signal Connections ................................................. 2-9
3. Startup and Operation ............................................................................. 3-1
3.1 Executing a Manual Calibration ...................................................................... 3-1
3.2 In Auto-Calibration Mode ................................................................................. 3-2
3.3 Placing the Analyzer into Service ................................................................... 3-2
3.4 Validating a Calibration Standard ................................................................... 3-2
3.5 Running an Analysis (Analyze Once) ............................................................. 3-2
3.6 Instrument Operation Modes........................................................................... 3-3
3.7 Sample Analysis and Validation...................................................................... 3-3
3.8 Calibration ......................................................................................................... 3-3
3.9 Cleaning ............................................................................................................. 3-3

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3.10 Post Wash .......................................................................................................... 3-4
3.11 Priming............................................................................................................... 3-4
4. Analyzer Hardware Conguration and Calibration .............................. 4-1
4.1 Optics Calibration ............................................................................................. 4-1
4.2 Optics Calibration Steps .................................................................................. 4-1
4.3 Reaction Cell Temperature Calibration .......................................................... 4-2
4.4 Pumps Calibration ............................................................................................ 4-2
4.5 Pumps Calibration Method .............................................................................. 4-2
4.6 Analog Outputs Calibration ............................................................................. 4-3
5. Calibration of the Instrument for Measurement Analysis.................... 5-1
5.1 Theory of Calibration........................................................................................ 5-1
5.2 Methods of Calibration ..................................................................................... 5-1
5.3 Single Point Calibration ................................................................................... 5-1
5.4 Base Line Calibration ....................................................................................... 5-2
5.5 High Range Dilution-Factor Calibration ......................................................... 5-2
5.6 Theory of Measurement ................................................................................... 5-3
5.7 Mode of Measurement...................................................................................... 5-3
5.8 Auto Restart Mode ............................................................................................ 5-4
5.9 Manual Restart Mode........................................................................................ 5-4
5.10 Measurement Cycle .......................................................................................... 5-4
5.10.1 Cell Wash........................................................................................... 5-5
5.10.2 Sample Capture................................................................................. 5-5
5.10.3 Optics Testing..................................................................................... 5-5
5.10.4 Checking Reaction Temperature ....................................................... 5-5
5.10.5 Blank Measurement........................................................................... 5-6
5.10.6 Add Reagents .................................................................................... 5-6
5.10.7 Collect Data........................................................................................ 5-7
5.10.8 Post Wash.......................................................................................... 5-7
5.10.9 Measurement Data ............................................................................ 5-7
5.10.10 Printing Results.................................................................................. 5-7
6. Menu Overview ......................................................................................... 6-1
6.1 Setup Menu........................................................................................................ 6-1
6.2 Measurement Menu .......................................................................................... 6-2
6.3 View Data and Alarms Menu ............................................................................ 6-2
6.4 Service Menu..................................................................................................... 6-3
6.5 System Administration Menu .......................................................................... 6-3
6.6 Hardware Setup Menu ...................................................................................... 6-4
6.7 Prime Fluidics Menu and New Reagents Blank............................................. 6-4
6.8 Diagnostics Menu ............................................................................................. 6-5
6.9 Default and Lost or Forgotten Passwords..................................................... 6-5
6.10 User Interface Tree............................................................................................ 6-6
7. Terms Denition ....................................................................................... 7-1

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8. Maintenance Schedule ............................................................................ 8-1
8.1 Changing Reagents .......................................................................................... 8-1
8.2 Installing Tubing Maintenance Kit................................................................... 8-2
8.3 Cleaning the Reaction Cell............................................................................... 8-4
8.4 Cleaning the Sample Flow Chamber .............................................................. 8-5
8.5 Installing Tubing Kit.......................................................................................... 8-6
8.6 Stand-By Mode and Extended Shutdown ...................................................... 8-7
9. Standby and On-Demand Modes ........................................................... 9-1
Revision Record.......................................................................................................i

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<1. General Information> 1-1
IM 12Y18A04-01EN 1st Edition : Oct. 04, 2019-00
1. General Information
The YOKOGAWA WE400 series analyzers are compact wet-chemistry analysis systems,
designed for the continuous on-line analysis of water in several applications across many
industries.
The WE440 Phosphate Analyzer uses the colorimetric detection method that relies on specic
reagents that are added to the sample to produce a reacted color compound.
The intensity of the color determines the concentration in reference to a known reacted standard.
The colored compound absorbs energy at a specic wavelength in accordance with the Beer-
Lambert Law.
The instrument uses Light Emitting Diodes (LEDs) that emit light at a narrow bandwidth selected
for the specic application.
The phosphate analysis method uses the blue LED.
nUnpacking the Instrument
Remove the analyzer from its shipping carton and inspect it for damage.
Do not destroy the shipping container during unpacking so that you can save it for possible future
use.
NOTE
The analyzer may be shipped with a translucent protective cover on the LCD. Carefully peel o󰀨
this translucent layer and discard it.
WARNING
DO NOT APPLY ELECTRICAL POWER TO VISIBLY DAMAGED COMPONENTS, AS INJURY
OR FURTHER EQUIPMENT DAMAGE MAY OCCUR.
1.1 Startup Procedure
This section describes the necessary steps to begin using the WE440 Phosphate Analyzer. Refer
to Chapter 2 for instructions on mounting the analyzer, making the plumbing connections, and
connecting electrical power. More details can be found in subsequent chapters.
Once the analyzer is securely mounted in a xed location, wired to electrical power, wired to
communications, (if necessary) and plumbed to process water, perform the following instrument
startup procedure:
1. Power on instrument.
2. To allow longer lifetime of unit, the pump-head tubing are not fully engaged when the unit is
shipped. Refer to Plumbing Connections section.
a. Reset tubes in pumps heads.
Note: This step must be repeated for all pump heads.
i. Remove tape.
ii. Slide tube retainer into place along keyway.
iii. Install tubing cover by squeezing both sides, and sliding into grooves.
3. Install reagents. Very carefully match reagent numbers and colors in their proper order.
Refer to “2.2.2 Installing the Reagents” section.

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NOTE
• It is recommended to wear latex gloves whenever handling or changing reagents.
• Turn the reagent cap clockwise while holding bottle vertical and level.
• Inspect the tubes to be sure none have been pinched.
4. Prime the tubing. (See Installing Peristaltic Pump Head Tubing section for more details.)
a. Press Menu.
b. Select Services.
c. Select Prime Fluidics.
d. Select Prime All.
Note: This procedure will run automatically and take approximately 10 minutes per cycle.
5. Refer to Chapter 3 for more details on startup and operation. Once the above four steps
have been completed, (4. a, b, c, d) press Run. Allow the unit to operate overnight or for at
least 12 hours, to become stabilized in the local environment.
6. For additional information on WE440 Phosphate Process Analyzer Operation, refer to
Chapter 3.
Additional details can be found in the following sections:
“3.6 Instrument Operation Modes”
“4. Analyzer Hardware Conguration and Calibration”
“5. Calibration of the Instrument for Measurement Analysis”
“6. Menu Overview”
“7. Terms Denition”
“8. Maintenance Schedule”
SAMPLE CHAMBER
SAMPLE CHAMBER
WITH FLOAT SENSOR
DRAIN SAMPLE (INLET)
SAMPLE (RETURN)
RGT STD
REAGENT STANDARD
SMP
SAMPLE
Figure 1.1 Reagent bottle numbers in proper order
1.2 General Product Description
This user manual provides the information necessary to obtain the maximum benets from the
WE440 Phosphate Analyzer. All operating instructions, functional descriptions, illustrations, and
other relevant information are contained in this manual.
Descriptions of the system hardware and user-interface software (the control panel) are included,
as an overview of the analytical techniques employed in the analyzer. Step-by-step instructions
guide you through all operating procedures and eld programming.
The analyzer is designed for easy operation. Each analyzer in this family runs in a fully
automated mode for routine, day-to-day water analysis.
The need for operator interaction is minimal. Accordingly, the information required by the routine
operator of this analyzer is modest, and that information is provided in Chapter 3 Startup and
Operation, of this manual.

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Important standard analyzer capabilities include:
• Sampling the process stream automatically.
• Calculating concentration of your sample and reporting it in units of concentration.
• Recalibrating automatically at preprogrammed intervals to compensate for any changes in
captured sample volume, pump ow rates and reagent composition.
• Cleaning automatically (when programmed) at user-specied intervals to prevent
precipitation build-up, coating of the optics or bacterial/fungal growth.
The analyzer brings colorimetric laboratory precision to the real world of unattended process
analyzing. It is designed for long life under continuous, rigorous use.
The WE400 series analyzers are designed for accommodating several applications. Each
application requires a specic conguration in hardware and software that is set at the factory.
This analyzer model is intended to use for clean water applications such as power plant water
analysis only, suspended solids must be less than 60 microns.
1.2.1 User Interface
nGeneral Description
The user-interface consists of a keypad and a graphical LCD display. The keypad is located
to the right of the display. The “F1-F4” function keys (soft-keys) take on di󰀨erent meanings
depending on the menu selection. The column on the left of the soft-keys labels the keys with
their appropriate functions.
Keys
RUN: starts the analysis
STOP: stops the current functioning of the instrument.
+ , -: allows for navigation between pages
ENTER: conrms selections made in the menus
MENU: accesses the menus, Pressing the MENU key displays the instrument’s Main
Menu. System parameters can be congured from the Main Menu.
soft-keys (in appropriate menus):
additional navigations for left / right or up / down cursor movement.
LCD display
the date, analysis label, time, navigational menus, current user, instrument-working mode,
current status of the instrument and the soft-key labels.
PHOSPHATE
+SETUP
+MEASUREMENT
+VIEW DATA AND ALARMS
+SERVICES
06/06/19
MAIN MENU
02:20 PM
Data field Cursor
Application name field
Display field Time field
Function keys assignment
Function keys Operational keys
Figure 1.2

<1. General Information> 1-4
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lDisplay Fields
1. DATE FIELD shows the current date.
2. CURSOR indicates current selection.
3. APPLICATION NAME FIELD shows instrument name tag.
4. TIME FIELD shows present time.
5. DISPLAY FIELD shows menus / measurements.
6. INFO eld shows information / instructions to navigate.
7. USER eld shows current user name.
8. MODE eld shows whether the instrument is working in Auto, Manual or Run mode.
9. STATUS eld shows current working status of the instrument.
10. FUNCTIONAL KEYS ASSIGNMENT FIELD shows the functions allotted to the functional
keys.
11. FUNCTION KEYS select functions.
12. OPERATIONAL KEYS are meant for operation of the instrument.
lSymbols used
Escape (Cancel/Back) Cursor
Logged out (Locked) Logged in
Scroll Up Scroll Down
Print Delete
Scroll Left Scroll right
Accept Reject
1.2.2 Menus Display
A “+” before a menu item denotes that the item has multiple options.
Keys
UP/DOWN arrow: scrolls up or down through options
ENTER: shows details of the options
MENU: shifts to Main Menu. Parameters can be congured from the Main Menu
NOTE
The analyzer may be shipped with a translucent protective cover on the LCD. Carefully peel o󰀨
this translucent layer and discard it.
1.2.3 Measurement Mode Display
In measurement mode, the instrument displays current and previous readings, units, date and
time. The measurement results can be displayed as large size fonts or normal size fonts. F1 key
will toggle between large and normal fonts.
NOTE
In AUTO mode, the user can navigate between di󰀨erent menus even though the instrument is
performing a measurement or a calibration.

<1. General Information> 1-5
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SAMPLE &
STANDARD PUMP
REACTION CELL
AIR VENT
REAGENT
PUMP
SAMPLE &
STANDARD VALVE
REACTION CELL
ASSEMBLY
SAMPLE CHAMBER
SAMPLE CHAMBER
WITH FLOAT SENSOR
DRAIN SAMPLE (INLET)
SAMPLE (RETURN)
POWER AND
I/O SIGNALS
CONNECTIONS
SAMPLE (BACK) N.C.
STANDARD (FRON T) N.O.
RGT
RGT STD
REAGENT STANDARD
SMP
SAMPLE
Figure 1.3 WE440 Phosphate Analyzer PO4 layout
WARNING
• Handling chemical samples, standards, and reagents can be dangerous.
• Review the necessary Material Safety Data Sheets and become familiar with all safety
procedures before handling any chemicals.
CAUTION
REAGENT BOTTLES MUST BE KEPT TIGHTLY CLOSED.
Observe all health and safety procedures for handling chemicals. Wash any spillage with Distilled
water.
Allow enclosure to vent any trapped fumes before servicing.
Air purge of enclosure is recommended.
EMPTY ALL REAGENTS BEFORE SHUTTING UNIT DOWN.

<1. General Information> 1-6
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1.2.4 Analysis Reaction Principle
The colorimetric method is based on the reaction of reagents with the sample to produce a
color. This color is measured and compared to a standard color, which proportionally denes its
concentration.
The color compound, which is the reacted mixture of the sample with the reagents, absorbs
energy at a specic wavelength in accordance to Beer-Lambert Law.
1.2.5 Fluids Storage
Store all reagents and standards in a dark place at room temperature.
1.2.6 Calibration Standard
Standard part # 229510, the calibration standard required for this application is a 10 ppm
solution. Each calibration cycle consumes approximately 50 mL. Each bottle contains enough
standard solution for approximately 20 calibrations.
1.2.7 Reagents Required
The analyzer requires one reagent, and one standard solution. All bottles are housed in the
uidics enclosure compartment.
For proper operation: Ensure that the reagents are correctly installed, the analyzer tubing is
correctly routed in the pumps and that the analyzer drain tube is connected to an atmospheric
drain. All of the reagents and standard vent tubes need to exhaust to the outside of the enclosure,
to minimize the trapping of any vapors inside the enclosure.
1. Connect sample to the analyzer and ensure that it is owing through the sample chamber
by observing the ow from the sample return line.
2. Turn the power ON to the instrument. After the booting sequence (this may take several
minutes), press STOP and then MENU key.
3. Select SERVICES MENU option and then PRIME FLUIDICS → AUTO PRIME → ENTER.
The instrument will go through a priming sequence of all the available solution to the analyzer.
Follow the startup procedure described in Chapter 3. You may repeat the AUTO PRIME
sequence as necessary to purge out any trapped bubbles in the lines.
1.2.8 Reagent Consumption
The phosphate method requires one reagent. The reagent usage depends on the frequency of
analysis. Typically 0.23 mL of the reagent is used per analysis cycle.
Based on 4 analyses per hour, the 1 Liter reagent should last approximately 45 days.

<2. Installation> 2-1
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2. Installation
The instrument is designed for general-duty, indoor installations. The electronics enclosure
environmental rating is NEMA 12 and the Fluidics enclosure is a NEMA 4X berglass with a clear
door window.
The WE440 Phosphate Analyzer should be installed in a well-ventilated location, with ambient
temperature between 5°C and 45°C (41°F to 113°F); and relative humidity not to exceed 90%
at 40°C. The area must be free from dust, corrosive gases, vibration and shocks; sheltered from
direct sunlight, and shielded from dripping water. Power should be instrument grade with over
voltage protection, and a provision for disconnecting power.
2.1 Mounting the Instrument
The instrument case is designed for wall or panel mounting.
• Use four #10 screws or equivalent for proper support.
• Refer to Figure 2.1 and Figure 2.2 for dimensions (in mm and inches).
• Make sure that the wall that you choose can support the weight of the instrument
(approximately 20 kg or 44 lbs.) See Figure 2.1.
• Locate the instrument as close to the sampling point as practical to ensure complete purging
of the sample line during each cycle.
• Allow approximately 50 cm (20 in.) of clearance at the left side for door swing. Also allow
enough clearance on the right side for wiring conduit.
• Locate the analyzer height such that the display is at eye-level height for an operator,
allowing also for appropriate sample and drain connections.
 
AIR VENT
SAMPLE RETURN (1/4”)
SAMPLE IN (1/4”)
VENT LINES
DRAIN (3/8”)
I/O SIGNALS
POWER IN
304.8 (12.0)
132 (5.19)
25 (0.98)30 (1.18)
162 (6.4) 406 (16)
674.6
(26.56)
698
(27.5)
152
(6)
41
(1.62)
330.3
(13.0)
AIR PURGE
70 (2.75)
Unit: mm (inch)
Mounting holes 4-ø8.0 (0.313)
Figure 2.1 Mounting dimensions

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SAMPLE CHAMBER
SAMPLE (BACK) N.C.
STANDARD (FRONT) N.O.
RGT
RGT STD
REAGENT STANDARD
SAMPLE
SAMPLE IN
SAMPLE RETURN
FLOW DIRECTION
FILTERED AND OIL FREE
AIR PURGE SUPPLY LINE
CONNECT TO
ATMOSPHERIC DRAIN
FLOW DIRECTION
SHUT-OFF
VALVE
AC MAINS
1
0
POWER CIRCUIT BREAKER
MUST BE CLEARLY IDENTIFIED
INSTALL HEIGHT TO
OPERATOR EYE LEVEL
PROCESS LINE
USER TO INSTALL A 40 to 60 MICRON
FILTER, SIZE IS BASED ON SAMPLE
CONDITION, SET FLOW RATE
BETWEEN : 50 TO 500 ML/MIN
AC POWER
DRAIN SAMPLE (INLET)
Figure 2.2 Typical external plumbing connections
NOTE
1. It is recommended that you install an external sample shut o󰀨 valve to allow control while
accessing or service to the sample chamber.
2. Air purging of upper and lower enclosures is recommended.
3. Each analyzer MUST have its own drain tube vented to atmosphere.
4. The installation of a power circuit breaker is highly recommended.
2.2 Plumbing Connections
Sample inlet, sample return and drain connections are made on the bottom side of the
instrument. The sample inlet and sample return ttings on the bottom of analyzer require ¼” OD
(6 mm OD) exible tubing. The drain tting at the bottom of the analyzer requires ⅜” OD (9.6
mm OD) exible tubing. The air purge inlets require ¼” OD tubing. The air purge supply must be
ltered externally and free of oil and any other particulates.
WARNING
The ⅜” (9.6 mm) DRAIN MUST BE VENTED TO ATMOSPHERE. The sample drain contains
analysis wastes, which include both sample and chemical reagents. Please check with local
authorities concerning proper disposal of waste from this product.

<2. Installation> 2-3
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NOTE
The enclosure drain produces no waste under normal use. However, in the event of spills or
leaks, some waste may be produced.
The analyzer is shipped with all of the internal tubing attached. Before starting up the instrument,
verify that the tubing lines are secured.
Figure 2.3 Internal tubing and tube routing interconnections
2.2.1 Installing Peristaltic Pump Head Tubing
Press the STOP key.
Disengage the U shape pressure plate of the pump head assembly by pressing with two ngers
and gently move upside as shown in Figure 2.4. Slide the tube tting retainers at each side.
Replace the old tube by sliding o󰀨 the barbed tting. If necessary, clean the pump rollers.
Lubricate the tubing with pea-sized quantity of silicone oil which should be purchased separately.
Fit the new tube and replace in the pressure plate. Note that the pressure plate sides must click
properly in the pump head assembly and align on both sides.
Repeat above steps for all pumps.
You can test the pump under Diagnostics menu for proper operation:
MENU → SERVICES → DIAGNOSTICS → PUMPS & STIRRER

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Figure 2.4 Installing peristaltic pump head tubing - (Single channel)
2.2.2 Installing the Reagents
The analyzer reagent startup kit contains all the necessary reagent for the specic application.
The reagent and calibration standard are supplied in ready-to-use bottles that can be replaced
directly onto the cap assemblies.
Follow the markings to install each solution into the respective feed line in the analyzer.
2.3 Connecting Power to the Analyzer
CAUTION
Only trained technical personnel should perform installation, electrical wiring and maintenance
of this product. Proper handling is required to avoid ESD (Electrostatic Discharge), as the
internal electronic components on the circuit boards can be damaged by static electricity. It is
recommended that before touching any electronic components, (such as printed circuit cards
and the components on them) you should discharge static electricity from your body. This
can be accomplished by touching an earth-grounded metal surface such as the chassis of an
instrument, metal conduit, or pipe.
The analyzer is equipped with a three terminal power connector strip located in the electronics
enclosure as shown in Figure 2.6.
IT IS HIGHLY RECOMMENDED THAT PROVISIONS FOR AN EXTERNAL CUSTOMER-
SUPPLIED POWER SWITCH OR BREAKER BOX (WITH COMPLETE CB SPECIFICATION),
CLEARLY MARKED FOR THE ANALYZER AND WITHIN REACH OF THE USER, BE
PROVIDED TO ALLOW REMOVING POWER DURING SERVICE.

<2. Installation> 2-5
IM 12Y18A04-01EN 1st Edition : Oct. 04, 2019-00
The analyzer has been designed to be hard-wired with provisions for the AC power lines to be
routed in conduit pipes connecting to the ¾” FNPT hubs located on the left side of the electronics
enclosure. See Figure 2.5.
When using line cords, use only certied power cords of 3 core, min 0.75 mm2/ 18 AWG, min.
temperature of 75°C, H05VV-F.
The power safety ground must be provided for proper operation.
BEFORE MAKING ANY CONNECTIONS:
• Make sure that the wires are not powered before connecting to the instrument.
• Disconnect any power previously connected to the relays.
• Connect the Phase Hot or L (line), Earth and Neutral to the terminal block. Note the location
of the fuse.
• Insert the wire into the terminal connector and make sure to tighten the screw.
• Route signal connections to the back hub, and power connections separately to the front
hub.
• All connections must conform to local safety standards.
Figure 2.5 Electrical wiring ports
Table 2.1 AC power terminal wire connections
Analyzer Terminal Destination North America Wire Color European Wire Color
HOT or L ( Line) black brown
Protective Earth Ground (PG) green green with yellow tracer
Neutral (n) white blue