Metrohm 806 User manual

806 Exchange Unit

Manual

8.806.8003EN / 2019-09-26

Metrohm AG

CH-9100 Herisau

Switzerland

Phone +41 71 353 85 85

Fax +41 71 353 89 01

[email protected]

www.metrohm.com

806 Exchange Unit

Manual

8.806.8003EN / 2019-09-26

Technical Communication

Metrohm AG

CH-9100 Herisau

[email protected]

This documentation has been prepared with great care. However, errors

can never be entirely ruled out. Please send comments regarding possible

errors to the address above.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of contents

806 Exchange Unit ￭￭￭￭￭￭￭￭ III

Table of contents

1 Introduction 1

1.1 About the documentation ................................................... 1

1.1.1 Symbols and conventions ........................................................ 1

1.2 Safety instructions ................................................................ 2

1.2.1 Tubing and capillary connections ............................................. 2

1.2.2 Flammable solvents and chemicals ........................................... 2

1.2.3 Filling the dosing cylinder ........................................................ 3

1.3 Recycling and disposal ......................................................... 3

2 Construction of the 806 Exchange Unit 4

2.1 Total view .............................................................................. 4

2.2 Components of the 806 Exchange Unit .............................. 6

3 Installation 9

3.1 Setting up the instrument .................................................... 9

3.1.1 Packaging ................................................................................ 9

3.1.2 Checks .................................................................................... 9

3.1.3 Location .................................................................................. 9

3.2 Start-up .................................................................................. 9

3.2.1 Preparing the exchange unit .................................................... 9

3.2.2 Attaching the exchange unit .................................................. 10

3.2.3 Filling the tubings .................................................................. 12

3.2.4 Buret tips ............................................................................... 13

3.2.5 Removing the exchange unit ................................................. 14

3.3 Mounting the components ................................................ 14

3.3.1 Mounting the thermostat casing ............................................ 14

3.3.2 Mounting the flat stopcock ................................................... 16

3.3.3 Mounting the tubings on the flat stopcock ............................ 17

4 Mode of operation 19

4.1 Filling the dosing cylinder and dosing .............................. 19

5 Handling and maintenance 21

5.1 Care and upkeep ................................................................. 21

5.1.1 Disassembling the exchange unit ........................................... 21

5.1.2 Cleaning the cylinder and piston ............................................ 22

5.1.3 Assembling the exchange unit ............................................... 23

5.1.4 Flat stopcock blocked ............................................................ 24

5.2 Chemical resistance and materials .................................... 25

5.2.1 Solutions ............................................................................... 25

5.2.2 Body ...................................................................................... 25

Table of contents ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

IV ￭￭￭￭￭￭￭￭ 806 Exchange Unit

5.2.3 Materials ............................................................................... 25

5.3 GLP - Validation .................................................................. 26

6 Troubleshooting 27

6.1 Problems .............................................................................. 27

7 Appendix 30

7.1 Buret data ........................................................................... 30

7.2 Dosing accuracy .................................................................. 30

7.2.1 Typical measurement deviation .............................................. 30

7.2.2 The ISO/EN/DIN standard 8655-3 ........................................... 31

8 Accessories 32

Index 33

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of figures

806 Exchange Unit ￭￭￭￭￭￭￭￭ V

Table of figures

Figure 1 806 Exchange Unit ............................................................................ 4

Figure 2 806 Exchange Unit - Components ..................................................... 6

Figure 3 Thermostat casing ........................................................................... 15

Figure 4 Flat stopcock ................................................................................... 16

Figure 5 Dosing/Filling .................................................................................. 19

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction

806 Exchange Unit ￭￭￭￭￭￭￭￭ 1

1 Introduction

The 806 Exchange Unit is a versatile buret unit which can be operated

with various Metrohm dosing devices or titrators. The 806 Exchange Unit

is suitable for simple dosings or titrations.

Specifications concerning the exchange unit and the reagent can be

stored in the integrated data chip. This data can be read out and updated

by a suitable instrument.

1.1 About the documentation

1.1.1 Symbols and conventions

The following symbols and styles are used in this documentation:

Cross-reference to figure legend

The first number refers to the figure number, the sec-

ond to the instrument part in the figure.

Instruction step

Carry out these steps in the sequence shown.

Method Dialog text, parameter in the software

File ▶ New Menu or menu item

[Next] Button or key

Warning

This symbol draws attention to a possible life hazard

or risk of injury.

Warning

This symbol draws attention to a possible hazard due

to electrical current.

Warning

This symbol draws attention to a possible hazard due

to heat or hot instrument parts.

Warning

This symbol draws attention to a possible biological

hazard.

1.2 Safety instructions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

2￭￭￭￭￭￭￭￭ 806 Exchange Unit

Caution

This symbol draws attention to a possible damage of

instruments or instrument parts.

Note

This symbol marks additional information and tips.

1.2 Safety instructions

1.2.1 Tubing and capillary connections

CAUTION

Leaks in tubing and capillary connections are a safety risk. Tighten all

connections well by hand. Avoid applying excessive force to tubing con-

nections. Damaged tubing ends lead to leakage. Appropriate tools can

be used to loosen connections.

Check the connections regularly for leakage. If the instrument is used

mainly in unattended operation, then weekly inspections are manda-

tory.

1.2.2 Flammable solvents and chemicals

WARNING

All relevant safety measures are to be observed when working with

flammable solvents and chemicals.

￭Set up the instrument in a well-ventilated location.

￭Keep all sources of flame far from the workplace.

￭Clean up spilled liquids and solids immediately.

￭Follow the safety instructions of the chemical manufacturer.

Table of contents

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