Metrohm 728 User manual

728 Magnetic Stirrer

Manual

8.728.8001EN / 2019-11-29

Metrohm AG

CH-9100 Herisau

Switzerland

Phone +41 71 353 85 85

Fax +41 71 353 89 01

[email protected]

www.metrohm.com

728 Magnetic Stirrer

Manual

8.728.8001EN / 2019-11-29

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

728 Magnetic Stirrer ￭￭￭￭￭￭￭￭ III

Table of contents

1 Introduction 1

1.1 Instrument description ......................................................... 1

1.1.1 Model versions ........................................................................ 1

1.1.2 Connectors .............................................................................. 1

1.1.3 Intended use ........................................................................... 1

1.2 About the documentation ................................................... 2

1.2.1 Symbols and conventions ........................................................ 2

1.3 Safety instructions ................................................................ 3

1.3.1 General notes on safety ........................................................... 3

1.3.2 Electrical safety ........................................................................ 3

1.3.3 Tubing and capillary connections ............................................. 4

1.3.4 Flammable solvents and chemicals ........................................... 4

1.3.5 Recycling and disposal ............................................................. 4

2 Overview of the instrument 6

3 Installation 8

3.1 Setting up the instrument .................................................... 8

3.1.1 Packaging ................................................................................ 8

3.1.2 Checks .................................................................................... 8

3.1.3 Location .................................................................................. 8

3.2 Installing the magnetic stirrer ............................................. 8

3.3 Connecting the magnetic stirrer .......................................... 8

4 Operation and maintenance 9

4.1 General notes ........................................................................ 9

4.1.1 Care ........................................................................................ 9

4.1.2 Maintenance by Metrohm Service ............................................ 9

5 Technical specifications 10

5.1 Magnetic stirrer .................................................................. 10

5.2 Power supply ...................................................................... 10

5.3 Interfaces and connectors ................................................. 10

5.4 Ambient temperature ......................................................... 10

5.5 Reference conditions .......................................................... 10

5.6 Dimensions/material ........................................................... 11

6 Accessories 12

Index 13

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

IV ￭￭￭￭￭￭￭￭ 728 Magnetic Stirrer

Table of figures

Figure 1 Front ................................................................................................. 6

Figure 2 Rear with stand ................................................................................. 7

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction

728 Magnetic Stirrer ￭￭￭￭￭￭￭￭ 1

1 Introduction

1.1 Instrument description

The 728 Magnetic Stirrer with base plate, support rod and electrode

holder supplements Titrino and Dosino units.

1.1.1 Model versions

The 728 Magnetic Stirrer is available in the following six versions:

2.728.0010 728 Magnetic Stirrer

2.728.0021 728 Magnetic Stirrer With 115 V US power

supply unit

2.728.0024 728 Magnetic Stirrer With 230 V EURO power

supply unit

2.728.0031 728 Magnetic Stirrer With 115 V US power

supply unit and stand

2.728.0034 728 Magnetic Stirrer With 230 V EURO power

supply unit and stand

2.728.0040 728 Magnetic Stirrer Complete for Titrino/

Dosino

Each version includes different accessories according to its use (see chap-

ter 6, page 12).

1.1.2 Connectors

The 728 Magnetic Stirrer needs 5 to 12 V DC voltage.

The 728 Magnetic Stirrer is supplied with power via a direct connection to

a Titrino, Dosino or via a power supply unit.

1.1.3 Intended use

The 728 Magnetic Stirrer is designed for usage in analytical laboratories.

This instrument is suitable for stirring chemicals and flammable samples.

Usage of the 728 Magnetic Stirrer therefore requires the user to have

basic knowledge and experience in handling toxic and caustic substances.

Knowledge with respect to the application of the fire prevention measures

prescribed for laboratories is also mandatory.

1.2 About the documentation ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

2￭￭￭￭￭￭￭￭ 728 Magnetic Stirrer

1.2 About the documentation

CAUTION

Please read through this documentation carefully before putting the

instrument into operation. The documentation contains information

and warnings which the user must follow in order to ensure safe opera-

tion of the instrument.

1.2.1 Symbols and conventions

The following symbols and formatting may appear 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-threat-

ening 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.

CAUTION

This symbol draws attention to possible damage to

instruments or instrument parts.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction

728 Magnetic Stirrer ￭￭￭￭￭￭￭￭ 3

NOTE

This symbol highlights additional information and

tips.

1.3 Safety instructions

1.3.1 General notes on safety

WARNING

Operate this instrument only according to the information contained in

this documentation.

This instrument left the factory in a flawless state in terms of technical

safety. To maintain this state and ensure non-hazardous operation of the

instrument, the following instructions must be observed carefully.

1.3.2 Electrical safety

The electrical safety when working with the instrument is ensured as part

of the international standard IEC 61010.

WARNING

Only personnel qualified by Metrohm are authorized to carry out service

work on electronic components.

WARNING

Never open the housing of the instrument. The instrument could be

damaged by this. There is also a risk of serious injury if live components

are touched.

There are no parts inside the housing which can be serviced or replaced

by the user.

Supply voltage

WARNING

An incorrect supply voltage can damage the instrument.

Only operate this instrument with a supply voltage specified for it (see

rear panel of the instrument).

1.3 Safety instructions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

4￭￭￭￭￭￭￭￭ 728 Magnetic Stirrer

Protection against electrostatic charges

WARNING

Electronic components are sensitive to electrostatic charges and can be

destroyed by discharges.

Do not fail to pull the power cord out of the power socket before you

set up or disconnect electrical plug connections at the rear of the

instrument.

1.3.3 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.

1.3.4 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 (e.g. fume cup-

board).

￭Keep all sources of flame far from the workplace.

￭Clean up spilled liquids and solids immediately.

￭Follow the safety instructions of the chemical manufacturer.

1.3.5 Recycling and disposal

This product is covered by European Directive 2012/19/EU, WEEE – Waste

Electrical and Electronic Equipment.

The correct disposal of your old instrument will help to prevent negative

effects on the environment and public health.

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