Retsch MM400 User manual

© Retsch GmbH, 42781 Haan, Retsch-Allee 1-5, Germany | 04.04.2023 Version 0000
Manual
Mixer Mill MM 400
Translation

2
Copyright
© Copyright by
Retsch GmbH
Retsch-Allee 1-5
42781 Haan
Germany

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Table of Contents
1Notes on the manual............................................................................................................................. 7
1.1 Disclaimer.......................................................................................................................................... 7
1.2 Copyright............................................................................................................................................ 7
1.3 Explanation of signs and symbols ..................................................................................................... 7
1.4 Explanations of the Safety Instructions ............................................................................................. 8
2Safety...................................................................................................................................................... 9
2.1 Intended use of the device................................................................................................................. 9
2.2 Improper use...................................................................................................................................... 9
2.3 Obligations of the operating company............................................................................................. 10
2.3.1 Provisions .................................................................................................................................... 10
2.3.2 Personnel..................................................................................................................................... 10
2.3.3 Workstation and device ............................................................................................................... 10
2.3.4 Qualification of personnel ............................................................................................................ 11
2.3.5 Personal protective equipment (PPE) ......................................................................................... 11
2.4 Protective Equipment....................................................................................................................... 11
2.5 Repairs............................................................................................................................................. 12
2.6 Preventing risks during normal operation........................................................................................ 12
2.7 Preventing damage to equipment.................................................................................................... 13
2.8 Safety instructions on the handling of liquid nitrogen (Oxygen deficiency)..................................... 13
2.8.1 Dangers ....................................................................................................................................... 13
2.8.2 Causes......................................................................................................................................... 14
2.8.3 Recommendations....................................................................................................................... 14
2.8.4 General conduct in the case of an accident ................................................................................ 14
2.9 Safety instructions on the handling of liquid nitrogen (Cryogenic burns) ........................................ 14
2.9.1 Dangers ....................................................................................................................................... 14
2.9.2 Causes......................................................................................................................................... 15
2.9.2.1 Burns through splashes....................................................................................................... 15
2.9.2.2 Burns through contact.......................................................................................................... 15
2.9.3 Recommendations....................................................................................................................... 15
2.9.4 General rules of conduct for splashes with liquid nitrogen.......................................................... 15
2.9.4.1 To the eyes.......................................................................................................................... 15
2.9.4.2 On the skin........................................................................................................................... 15
2.10 Confirmation Form for the Managing Operator................................................................................ 16
3The Mixer Mill MM 400......................................................................................................................... 17
3.1 Technical data ................................................................................................................................. 17
3.2 Emissions......................................................................................................................................... 19
3.3 Views of the device.......................................................................................................................... 20
3.3.1 Front............................................................................................................................................. 20
3.3.2 View of the grinding jar support................................................................................................... 21
3.3.3 Back............................................................................................................................................. 22
3.4 Signs on the device ......................................................................................................................... 23
3.5 Type Plate Description..................................................................................................................... 24
4Packaging, Transport and Installation .............................................................................................. 25
4.1 Accessories included with delivery.................................................................................................. 25
4.2 Packaging........................................................................................................................................ 25
4.3 Transport.......................................................................................................................................... 25
4.4 Temperature Fluctuations and Condensation ................................................................................. 26
4.5 Conditions for the Installation Site................................................................................................... 26
4.6 Remove packaging.......................................................................................................................... 27
4.7 Removing the Transportation Lock.................................................................................................. 28
5First Commissioning........................................................................................................................... 29
5.1 Electrical Connection....................................................................................................................... 29

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5.2 Connecting the device to the power supply..................................................................................... 30
6Operating the Device .......................................................................................................................... 31
6.1 Switching the device on/off.............................................................................................................. 32
6.2 Opening and Closing of the Device................................................................................................. 32
6.3 Specifications regarding grinding balls and grinding jars ................................................................ 33
6.3.1 Grinding Jar Identification............................................................................................................ 34
6.3.2 Recommended maximum ball sizes............................................................................................ 34
6.3.3 Recommended Grinding Jar Filling ............................................................................................. 34
6.4 Opening aid...................................................................................................................................... 35
6.5 Preparing the grinding jar ................................................................................................................ 36
6.5.1 Opening the grinding jar .............................................................................................................. 37
6.5.2 Filling the grinding jar................................................................................................................... 38
6.5.3 Closing the grinding jar................................................................................................................ 38
6.6 Inserting the Grinding Jar ................................................................................................................ 39
6.6.1 Opening the grinding jar support ................................................................................................. 39
6.6.2 Inserting the grinding jar .............................................................................................................. 40
6.7 Grinding process.............................................................................................................................. 41
6.8 Starting the grinding process........................................................................................................... 42
6.9 Removing the sample material........................................................................................................ 42
6.10 Special grinding methods ................................................................................................................ 44
6.10.1 Cryogenic grinding................................................................................................................... 44
6.10.2 Wet Grinding with Highly Flammable Materials....................................................................... 45
7Device control...................................................................................................................................... 46
7.1 Menu interface on the touchscreen ................................................................................................. 47
7.2 Function elements ........................................................................................................................... 48
7.3 Menu navigation .............................................................................................................................. 51
7.4 Main menu....................................................................................................................................... 52
7.5 Controlling the grinding process...................................................................................................... 53
7.5.1 Starting the grinding process....................................................................................................... 53
7.5.2 Pausing the grinding process ...................................................................................................... 53
7.5.3 Stopping the grinding process ..................................................................................................... 54
7.5.4 Grinding process successfully completed ................................................................................... 54
7.6 Program mode................................................................................................................................. 54
7.6.1 Select a Program......................................................................................................................... 55
7.6.2 Edit a Program............................................................................................................................. 57
7.6.3 Save a Programme...................................................................................................................... 58
7.6.4 Delete a Programme.................................................................................................................... 58
7.7 Cycle programme mode .................................................................................................................. 58
7.7.1 Selecting the cycle programme ................................................................................................... 60
7.7.2 Editing the cycle programme....................................................................................................... 61
7.7.3 Saving the cycle programme....................................................................................................... 62
7.7.4 Deleting the cycle programme..................................................................................................... 62
7.8 System settings ............................................................................................................................... 62
7.8.1 Brightness.................................................................................................................................... 63
7.8.2 MyRetsch..................................................................................................................................... 63
7.8.3 Device information....................................................................................................................... 64
7.8.4 Signalling device.......................................................................................................................... 64
7.8.5 Date and time............................................................................................................................... 65
7.8.6 Service Environment.................................................................................................................... 65
7.8.6.1 Software update................................................................................................................... 65
7.8.6.2 Calibration............................................................................................................................ 66
8Error Messages and Information Notes............................................................................................ 67
8.1 Error Messages ............................................................................................................................... 67
9Installing additional equipment ......................................................................................................... 69

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9.1 Adapter for conical centrifuge tubes and adapter for 30 ml wide mouth bottles ............................. 69
9.2 Adapter for 4 x 5 ml steel grinding jars............................................................................................ 71
10 Servicing .............................................................................................................................................. 72
10.1 Cleaning........................................................................................................................................... 72
10.1.1 Cleaning the outside of the device .......................................................................................... 73
10.1.2 Cleaning the collecting tray...................................................................................................... 73
10.1.3 Cleaning the inside .................................................................................................................. 73
10.1.4 Cleaning the grinding jar.......................................................................................................... 73
10.1.5 Cleaning the grinding balls ...................................................................................................... 73
10.2 Maintenance .................................................................................................................................... 73
10.3 Wear ................................................................................................................................................ 74
10.3.1 Replacing the Fuses................................................................................................................ 74
10.4 Returning for repair and maintenance............................................................................................. 75
11 Accessories ......................................................................................................................................... 76
12 Disposal................................................................................................................................................ 77
13 Index ..................................................................................................................................................... 79

Notes on the manual
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Notes on the manual
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1 Notes on the manual
This manual provides technical guidelines for the safe operation of the device. Read this
manual through carefully before installing, putting into service and operating the device.
Reading and understanding this manual is essential for handling the device safely and as
intended.
This manual does not contain any repair instructions. Please contact your supplier or contact
Retsch GmbH directly if anything is unclear or you have questions about these guidelines or the
device, or in the case of any faults or necessary repairs.
You can find further information about your device at https://www.retsch.com on the pages for
the specific device concerned.
Amendment status:
The document amendment 0000 of the "Mixer Mill MM 400" manual has been prepared in
accordance with the Directive of Machinery 2006/42/EC.
1.1 Disclaimer
Diev orliegende Bedi enungsanleitung wurd emi tg rößter Sorgfalt erst ellt.T echnische Änd erungen sind vorbeh alten.F ür Personensc häden, die aus der Nic htbefolgung der Sicherh eits- und Warnhinweis ei n dieser Bedienungs anleitung resultier en,wi rd keine Haftung über nommen. Für Sac hschäden, die aus der Nich tbefolgung der Hinweis ei n dieser Bedienungs anleitung resultieren, wi rdk eine Haftung übernomm en.
This manual has been prepared with great care. We reserve the right to make technical
changes. We assume no liability for personal injuries resulting from the failure to follow the
safety information and warnings in this manual. No liability will be assumed for damage to
property resulting from the failure to follow the information in this manual.
1.2 Copyright
This document or parts of it or its content may not be reproduced, distributed, edited or copied
in any form without prior written permission of Retsch GmbH. Damage claims shall be asserted
in the case of infringements.
1.3 Explanation of signs and symbols
In this manual, the following signs and symbols are used:
Signs and symbols
Meaning

Reference to recommendation and/or important information.
Bold font
Labelling of an important term.
•.
•.
•
Lists
(1), (2), (…)
(A), (B), (..)
The components have a fixed marking.

Action steps of instructions.
➔
Result of an action step

Notes on the manual
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In the descriptions of these operating instructions, the Retsch mixer mill MM 400 is
mostly referred to as a device.
1.4 Explanations of the Safety Instructions
DANGER
D1.0000
Risk of fatal injuries
Source of danger
−Possible consequences if the danger is ignored.
•Instructions and information on how to avoid the risk.
Fatal or serious injuries may result if the “Danger” sign is disregarded. There is a very high
risk of a life-threatening accident or lasting personal injury. The signal word DANGER is
additionally used in the running text or in instructions.
WARNING
W1.0000
Risk of life-threatening or serious injuries
Source of danger
−Possible consequences if the danger is ignored.
•Instructions and information on how to avoid the risk.
Life-threatening or serious injuries may result if the “Warning” sign is disregarded. There is
an increased risk of a serious accident or of a possibly fatal personal injury. The signal word
WARNING is additionally used in the running text or in instructions.
CAUTION
C1.0000
Risk of injuries
Source of danger
−Possible consequences if the danger is ignored.
•Instructions and information on how to avoid the risk.
Average to slight injuries may result if the “Caution” sign is disregarded. There is an average
or slight risk of an accident or personal injury. The signal word CAUTION is additionally
used in the running text or in instructions.
NOTICE
N1.0000
Type of damage to property
Source of the damage to property
−Possible consequences if the information is ignored.
•Instructions and information on how to avoid the damage to
property.
Damage to property may result if the information is disregarded. The signal word NOTICE is
additionally used in the running text or in instructions.

Safety
9
2 Safety
CAUTION
C2.0002
Risk of injury
Lack of knowledge of the manual
−The manual contains all safety-related information. Disregarding the
manual can therefore lead to injuries.
•Read the manual carefully before operating the device.
Target group:
The MM 400 has been designed for preparing samples in a laboratory environment. laboratory
environment. This manual is therefore directed at persons who work with this device in a
comparable environment and who already have experience with similar equipment.
The MM 400 is a modern, efficient, state-of-the-art product from Retsch GmbH. Its reliability is
ensured when used as intended and with knowledge of this technical documentation.
2.1 Intended use of the device
The MM 400 is designed for crushing, grinding, mixing and homogenising soft, medium-hard,
hard, fibrous, elastic and brittle materials in dry and wet condition up to a particle size of 8 mm.
The device is also suitable for the cryogenic grinding of sample materials.
As a laboratory device, the MM 400 is only to be used for the preparation of samples and not as
a production machine.
The device is designed for stationary operation in a dry and clean working environment.
Operators and operating personnel must have read the operating instructions and be familiar
with the full range of functions of the device.
2.2 Improper use
The MM 400 may only be used as intended.
Any uses other than the described intended use are regarded as improper use.
The MM 400 is not suitable for processing sample materials that can form explosive air
mixtures.
Any form of claims for damage to equipment or personal injury resulting from improper use
and/or the failure to comply with the safety instructions shall be ruled out.

Safety
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2.3 Obligations of the operating company
2.3.1 Provisions
The user bears responsibility for ensuring that people working with the device and the
corresponding equipment have taken note of and understood all relevant safety regulations.
2.3.2 Personnel
•Ensure that only trained personnel are deployed whose training and experience enable
them to recognise risks and avoid potential hazards.
•Staff should be given regular training on using the device, and in particular regarding
sudden events.
•Only allow trainee staff to work on the device when they are being supervised by
qualified personnel.
•Check the safety awareness of staff regularly.
•Define staff responsibilities according to qualification and job description.
•Provide staff with personal protective equipment (PPE).
•Ensure that the following conditions have been met:
–Staff have read and understood this Manual, and in particular the chapter on
Safety.
–Staff are aware and take note of the relevant accident prevention and safety
regulations.
–Staff wear the designated personal protective equipment (PPE) when working with
the device.
2.3.3 Workstation and device
•Ensure that there is sufficient lighting and ventilation at the workstation.
•Ensure that the exhaust air is properly conducted outside.
•All signs on the device must be kept in a legible condition.
•Ensure that all inspections and servicing work prescribed in this Manual are carried out.