Nic RA-4300A Manual de usuario

RA-4300 Service Manual

Document

Number NIC-704-2032-01

Date of

Issue 2020/2/26

Control

Department

Technical Service

Group Page 1/37

RA-4300A

Service Manual

Nippon Instruments Corporation

Technical Service Group

Date Prepared Checked Approved

First

Edition

2020/2/26 Kinoshita - Noda

Reducing-Vaporization Mercury Analyzer

Mercury/RA-4300A Service Manual

Table of Contents

1.INTRODUCTION ................................................................................................................ 1

SAFETY PRECAUTIONS ............................................................................................... 1

1.1.1. Meaning and explanation of symbols............................................................... 1

1.1.2. Precautions for work......................................................................................... 1

TARGET USERS.......................................................................................................... 1

2.UPDATING THE FIRMWARE ............................................................................................ 2

METHOD OF UPDATING THE FIRMWARE........................................................................ 2

2.1.1. Loading the file................................................................................................. 3

2.1.2. Writing............................................................................................................... 4

2.1.3. Enabling the change......................................................................................... 5

IF THE FIRMWARE UPDATE FAILS.................................................................................. 6

3.REPLACING PARTS.......................................................................................................... 7

REPLACING THE MAIN BOARD...................................................................................... 7

REPLACING THE REAGENT PUMP................................................................................. 8

REPLACING THE MEASURING CAP AND BUBBLER .........................................................11

REPLACING THE REACTION TUBE .............................................................................. 14

REPLACING THE REAGENT TUBE ............................................................................... 16

REPLACING THE LAMP .............................................................................................. 19

REPLACING THE V2 VALVE........................................................................................ 22

REPLACING THE FLOW RATE SENSOR ........................................................................ 23

REPLACING THE DISPENSER ARM ASSEMBLY.............................................................. 23

4.ADJUSTMENTS............................................................................................................... 29

ADJUSTING THE OFFSET OF THE DISPENSER ARM AND TURNTABLE ............................. 29

ADJUSTING THE BELT OF THE TURNTABLE.................................................................. 30

5.MAINTENANCE ............................................................................................................... 32

DAILY INSPECTION............................................................................................................... 32

6.CORRECTIVE MEASURES............................................................................................. 33

ABNORMAL BLANK VALUE.......................................................................................... 33

WASHING METHOD................................................................................................... 34

6.2.1. Washing the reagent tube .............................................................................. 34

6.2.2. Washing the cap, bubbler, light absorption cell, and dehumidifier tube......... 34

POOR SENSITIVITY ................................................................................................... 34

6.3.1. Recovering from poor sensitivity.................................................................... 35

6.3.2. Checking for and recovering from leakage.................................................... 35

7.OTHER TOPICS............................................................................................................... 36

PROVIDING THE PROTECTION FOR RELOCATION OR TRANSPORTATION........................ 36

PRECAUTIONS FOR DISPOSING OF THE ANALYZER...................................................... 37

8.CONTACT......................................................................................................................... 38

1. Introduction

Safety precautions

1.1.1. Meaning and explanation of symbols

Indicates that incorrect handling could result in the death or severe

injury to the operator.

Indicates that incorrect handling could result in minor injury or

moderate injury to the operator or damage to property.

1.1.2. Precautions for work

• When removing the cover of the analyzer, be sure to cut off the power supply in

advance. Otherwise, an electric shock or machine damage may occur.

• Before updating the firmware, confirm that the version of the software on the PC is

compatible with the firmware.

• Remove anychemicals (e.g. in sample bottles and regent bottles) from the turntable

of the analyzer because they may accidentally spill during work.

Target users

Only qualified users, who have completed the service work training program in Nippon

Instruments Corporation, are allowed to conduct the work described in this work manual.

Observe the safety precautions to conduct work.

Warning

Caution

Warning

Caution

2. Updating the firmware

•Before updating the firmware, confirm that the version of the software on the PC is

compatible with the firmware.

Method of updating the firmware

Because the firmware update function is built into both RA4Win and the firmware, you can

easily update the firmware. From the System menu bar of RA-4win, click [Update firmware].

The above window appears. You can update the firmware in this window.

The following is the flow of the updating procedure:

Load the firmware file into the PC.

Write the loaded data into the flash memory of the RA4’s main board.

Turn off the power of the main unit and then turn it on again to enable the change.

Warning

2.1.1. Loading the file

Click [Load] button to load the firmware file. The file name is normally “RA4.mot.”

When the loading is successfully completed, the message “File load success” appears as

shown below, and [Write] button becomes clickable. If there is something wrong with the loaded

file, the message “File loading fail” appears, and [Write] button stays grayed out.

2.1.2. Writing

Click [Write] button to write the loaded data into the flash memory of the RA4’s main unit.

The sequence of the writing process is erasing, programming (writing), and verifying.

* Do not turn off the power during the writing process, otherwise you will not be able to

rewrite the firmware.

You can skip the verification step by deselecting [Verify] checkbox even during the process.

[Writing window]

[Verifying window]

2.1.3. Enabling the change

When the writing is complete, the following window appears. Click [OK] to exit the program.

Turn off the power of the RA4’s main unit, and then turn it on again.

The update is enabled after rebooting.

If the firmware update fails

If you turn off the power during the update of the firmware, the program cannot be written

normally. In such a case, you cannot even start up the system by turning on the power again.

Because the system cannot start up, you cannot rewrite the program through the normal

method.

If you are in this situation, you need to write the firmware by starting up the system in boot

mode, a mode dedicated to updating the firmware.

Turn off the power, open the rear cover of the main unit, and set SW1 on the CPU board to

the positions of boot mode.

Confirm that the PC and the RA4’s main unit are connected via ethernet cables. Then turn on

the power.

Start RA4Win.

Write the firmware using the procedure in 2.1. Method of updating the firmware.

When the writing is complete, turn off the power, set SW1 on the CPU board back to the

positions of normal mode, and then turn it on again. The procedure is now complete.

Boot mode

Normal mode

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