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
www.metrohm.com
806 Exchange Unit
Manual
8.806.8003EN / 2019-09-26
Technical Communication
Metrohm AG
CH-9100 Herisau
This documentation is protected by copyright. All rights reserved.
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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