Thermo Scientific VARIOMAG MINI 07 Manuale utente

Magnetic Stirrer

Operating Manual

50108226

Issue

02.

2007

MINI 07 MINI 20

MICRO 07 MICRO 20

COMPACT 07 COMPACT 20

MAXI 07

MAXI 20

MAXI 40

DURAN® is a trademark of SCHOTT AG.

All other trademarks are the property of Thermo Fisher Scientific Inc and

its

sub

sidiaries.

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ble in all countries.

Please consult your local sales representative for details.

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cifically

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Subject to change without notice.

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rmo Electron LED

GmbH is legal successor of H+P Labortechnik AG

Thermo Electron LED GmbH

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Contents

50108226

_02.

2007

Thermo Scientific

Page

Assembly drawings

User considerations

Correct use

Incorrect use

Pictographs

Safety considerations

Equipment description

Function

Startup procedure

4.1

Connecting the device

4.2

Stirring vessels

4.3

Magnetic stirring bars

Short

operating manual for

TELEMODUL 20 C / 40 C

Stirring operation

6.1

Recommended rotation speed

ranges

6.2

Stirring using

the TELEMODUL

control unit

6.3

Stirring using the TELEMODUL 20 C /

40 C

6.3.1

Selecting the language

6.3.2

Selecting a program

6.3.3

Stirring

6.3.4

Power adaptation

6.3.5

Mixing vertically (Shake)

6.3.6

Interval operation

6.3.7

Selecting the startup time

6.3.8

Terminating the stirring process

6.4

Tips on stirring

Remote operation

Maintenance and cleaning

Troubleshooting

Technical specifications

Warranty

Assembly

drawings

Thermo Scientific

50108226

_02.

2007

Ass

embly drawings

Figure 1:

MINI, MICRO, COMPACT and MAXI stirring systems with TELEMODUL

and TELEMODUL 20 C / 40 C control units

Figure 2:

TELEMODUL control unit as plug

in control unit (left) or with mains cable

(right)

Stirring point

Stirring drive

a) COMPACT

b) MICRO

c) MINI

d) MAXI

TELEMODUL control unit

Control cable

TELEMODUL 20 C / 40 C

control unit

(c)

(d)

(b)

(a)

Stirring drive

TELEMODUL control unit

Control cable

Rotation speed control

button

Magnetic stirrer outlet

Assembly

drawings

50108226

_02.

2007

Thermo Scientific

Figure 3:

Control unit TELEMODUL 20 C / 40 C with power supply unit

TELEMODUL 20 C

TELEMODUL 40 C

Power supply unit intake

Magnetic stirrer outlet

RS 232C port

Figure 4:

Control unit TELEMODUL 20 C (left) and TE

LEMODUL 40 C (right),

back view

TELEMODUL 20 C / 40

C control unit

Adjusting wheel

Program keys

Display

START/STOP key

Power supply unit

connecting cable

Power supply unit

Mains cable

without

function

User

considerations

Thermo Scientific

50108226

_02.

2007

User considerations

Correct use

The remote

controlled single magnetic stirring systems MINI, MICRO, COMPACT and

MAXI are designed for stirring or vertical mixing of liquids.

The MICRO, COMPACT and

MAXI stirring drives ar

e ideally suited for submerged operation.

The single magnetic

stirring systems can be employed for chemical, microbiological, pharmaceutical or

medical purposes.

The stirrers are suited to operation in the following areas:

On the laboratory bench

In incuba

tors and gas incubators wit

h or without air humidification

In cold chambers

MICRO, COMPACT and MAXI:

In water bath

In laminar flow equi

pment

In safety

laboratories and sterile rooms

In measuring equipment (e. g. photospectromet

ers)

Incorrect use

The magnet

ic stirring systems MINI, MICRO, COMPACT and MAXI must not be

operated in hazardous locations.

Do not stir or shake flammable liquids with a low boiling point.

The magnetic stirring system MINI must not be operated in a water bath.

Do not heat liquids in p

ressure sealed vessels (e.g. storage flasks, Erlenmeyer flasks).

Pictographs

You will find the following pictographs in this operating manual:

DANGER

This sign refers to dangerous voltages.

DANGER

This sign refers to hazardous situations.

Hazards to h

uman life are indicated by "LIFE HAZARD".

CAUTION

This sign indicates danger to equipment and machinery.

INFORMATION

This sign indicates easier working practices.

Indicates an operating step.

Indicates alternatives.

Safety

considerations

50108226

_02.

2007

7 Thermo Sc

ientific

Safety considerations

For

your own safety, you should observe the following safety warning signs.

The warning signs indicate potential sources of danger.

They also inform on how correct action can avert danger.

You will find these warning

signs wherever there is a risk of dangerous situations.

DANGER

Supply voltage and supply frequency must be within the range

specified for the control unit (3, 5).

The control unit (3, 5) must only be connected to a grounded socket.

DANGER

Magnetism.

Magnetic or metallic parts (e.g. data carriers, pacemaker

s, watches)

can be affected by magnetic fields.

Keep such parts away from the stirring drive (2) and the magnetic

stirring bars.

CAUTION

The equipment must not be operated in hazardous locations.

CAUTION

Permissible ambient conditions:

Cf. Technical specifications.

Avoid extreme temperature changes.

The control unit (3, 5) must not be run in humid rooms, or set up in

water splash zones!

CAUTION

Connect only the appro

priate power supply unit to the

TELEMODUL 20 C (cf. Technical specifications, contr

ol units).

Connect only the appropriate power supply unit to the

TELEMODUL 40 C (cf. Technical specifications, control units).

Connection to another power supply unit may cause damage to the

control unit.

CAUTION

Before connecting the stirring drives (

2) to the TELEMODUL 20 C / 40 C

control unit (5), please note the connection options as listed in Table 1.

Do not connect a single MINI, MICRO or COMPACT stirring drive to the

TELEMODUL 40 C control unit.

This may result in overload and damage

the stirring

drives.

You may connect only stirring drives of the same type to the benchtop

distributors, and you may only connect them in pairs.

Safety

considerations

Thermo Scientific

50108226

_02.

2007

CAUTION

Do not place hot stirring vessels on top of the magnetic stirrer (2).

Maximum temperature: +56°C (except MICRO: max. +100°C).

CAUTION

TELEMODUL 20 C / 40 C:

If you selected the shake mode (vertical mixing):

Select the minimum speed setting a

nd then increase it slowly.

Depending on the magnetic stirring bar used, you may be able to

perform vertical stirring only at lower speeds.

CAUTION

In case of repair, the equipment must only be opened by an authorized

service agent.

CAUTION

Do not a

llow AlNiCo5 type magnetic stirring bars to remain in an

alternating magnetic field if they cannot rotate freely.

Do not subject

the magnetic stirring bar to a strong inverse magnetic field.

This may

result in destruction of the magnetic stirring bar.

INFORMATION

In the case of circular and triangular magnetic stirring bars, the length

must not exceed 50 mm.

The leng

of the magnetic stirring bars

should not exceed 80 % of the vessel diameter.

Do not use cylindrical stirring bars with a center ring, o

r elliptical

stirring bars with a round cross

section.

INFORMATION

Some magnetic stirring bars (especially triangular bars) may have a

critical resonance frequency at lower rotation speeds.

This may cause

the magnetic stirring bar to wander away from the turning center and

carry out periodic oscillations.

oid this rotation speed setting when

the problem occurs.

Quickly travel through this problem range when

adjusting the rotation speed.

Equipment

description

50108226

_02.

2007

9 Thermo Sc

ientific

Equipment description

Figures 1 to 4 show the components together with their position numbers.

Every magnetic stirring s

ystem MINI, MICRO, COMPACT and MAXI is equipped with

one stirring point (1).

The drive is inside the housing of the stirring drive (2), which is

completely watertight.

This prevents germs from penetrating into the inside of the

stirring drive (2).

The stirring drive (2) is cleared for use in safety laboratories and sterile

rooms.

The drive is constructed without the use of moving parts and therefore totally

wear

free.

The stirring drive (2) gets its power either from the TELEMODUL control unit

(3; Figure 2

) or the TELEMODUL 20 C / 40 C control unit (5; Figure 3).

On the budget

-priced equipment incorporating the TELEMODUL control unit (3), the

rotation speed can be preselected continuously.

This is done using the rotation speed

control button (6).

The TELEMO

DUL control unit (3) can be of the plug

in type, or be

fitted with a mains cable.

The TELEMODUL 20 C / 40 C (5) is available in two models, 20 C and 40 C.

These two

models differ with regard to maximum speed and to stirring power (for details see the

tech

nical specifications).

The TELEMODUL 40 C control unit is additionally equipped

with a RS 232C port.

The RS 232C interface can be used to remote-

control the control

unit from a PC.

The TELEMODUL 20 C / 40 C (5) interface is menu

driven.

The display (10) sh

ows the

selected speed (rpm) and gives an overview over the functions selected.

You may preset speed and stirring power as well as change the stirring mode.

The

adjusting wheel (8) is used for selecting the appropriate menu and for adjusting the

desired v

alue.

The three program keys (9) can be individually defined.

After the startup time (soft start) the stirring bar turns or mixes at the selected speed.

The TELEMODUL 20 C / 40 C (5) can be equipped with a four

way or eight

way

benchtop distributor (access

ory), allowing you to control 2, 4, 6 or 8 stirring drives

simultaneously.

Stirring vessels and magnetic stirring bars do not fall within the scope of delivery.

Function

Thermo Scientific

50108226

_02.

2007

Function

The magnetic stirring systems MINI, MICRO, COMPACT and MAXI are used for

chemical, mic

robiological, biotechnical or medical purposes, e.g.:

Growing microorganisms (e.g. aerating and growing bacteria cultures),

Dissolving nutrient media and solids,

To prevent the settling of suspended matter,

Titration,

Integration in measurement equipment f

acilitating concurrent measurement

and stirring.

The

MINI

stirring system is designed for very small vessels such as cuvettes.

It is

extremely small and flat, has a highly flexible flat

strip cable, and is suitable for

integration in measurement equipment.

The powerful and handy

MICRO

stirring system with its completely sealed stainless

steel body can be used for extended temperature ranges. This stirring

system can be

attached to analyzers, experimental set

ups, or stands.

For this purpose it is fitted wit

an M4 thread at the bottom of the device.

The

COMPACT and MAXI

stirring systems are particularly suited for routine laboratory

tasks and larger stirring quantities.

Thanks to their robust stainless steel bodies they

can also be used in water baths.

Liqui

ds may be stirred in vessels of various shapes (e.g. cuvettes, conical (Erlenmeyer)

flasks, beakers and test tubes).

As the rotation speed can be variably adjusted, liquids

can be both moved gently as well as vigorously mixed.

When the stirring vessel is p

laced on the stirring point (1), an electromagnetic field will

move the magnetic stirring bar.

When using the TELEMODUL

20 C / 40 C (

), you have a choice of stirring or vertically

mixing the liquid.

During stirring operation, the liquid will rotate in the vessel.

During

vertical mixing (shake mode), the current inside the vessel will be directed upwards and

downwards.

The liquid will not rotate.

The rotation or shaking frequency can be adjusted

continuously.

The speed display shows the current rotating or

oscillating speed of the

magnetic stirring bars.

All magnetic stirring bars will be moving at the same frequency.

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