Retsch SM 400 User manual

© Retsch GmbH, 42781 Haan, Retsch-Allee 1-5, Germany | 30.01.2020 Version 0002
Manual
Cutting Mill SM 400
Translation

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

3
Table of Contents
1Notes on the manual............................................................................................................................. 6
1.1 Disclaimer.......................................................................................................................................... 6
1.2 Copyright............................................................................................................................................ 6
1.3 Explanation of signs and symbols ..................................................................................................... 6
1.4 Explanations of the Safety Instructions ............................................................................................. 6
1.5 General Safety Instructions ............................................................................................................... 7
1.6 Repairs............................................................................................................................................... 9
1.7 Responsibility of the operating company........................................................................................... 9
1.8 Personnel qualification and target group of this manual ................................................................... 9
2Confirmation Form for the Managing Operator................................................................................ 11
3Technical Data..................................................................................................................................... 12
3.1 Protective Equipment....................................................................................................................... 12
3.2 Degree of Protection........................................................................................................................ 12
3.3 Emissions......................................................................................................................................... 12
3.4 Electromagnetic Compatibility (EMC).............................................................................................. 12
3.5 Rated Power.................................................................................................................................... 12
3.6 Motor Rotation Speed...................................................................................................................... 13
3.7 Dimensions and Weight................................................................................................................... 13
3.8 Required Floor Space...................................................................................................................... 13
3.9Receptacle Volume.......................................................................................................................... 13
3.10 Feed Grain Size............................................................................................................................... 13
3.11 Installation drawing.......................................................................................................................... 14
4Packaging, Transport and Installation .............................................................................................. 16
4.1 Packaging........................................................................................................................................ 16
4.2 Transport.......................................................................................................................................... 16
4.3 Temperature Fluctuations and Condensation ................................................................................. 17
4.4 Conditions for the Installation Site................................................................................................... 17
4.5 Electrical Connection....................................................................................................................... 18
4.6 Type Plate Description..................................................................................................................... 18
5First Commissioning........................................................................................................................... 20
5.1 Installation of the Device.................................................................................................................. 20
5.2 Installing the fill hopper.................................................................................................................... 21
6Operating the Device .......................................................................................................................... 23
6.1 Use of the Device for the Intended Purpose.................................................................................... 23
6.2 Principle of Operation ...................................................................................................................... 24
6.3 Views of the device.......................................................................................................................... 24
6.3.1 Front............................................................................................................................................. 24
6.3.2 Side view...................................................................................................................................... 26
6.3.3 Interior view.................................................................................................................................. 26
6.4 Switching On / Off............................................................................................................................ 27
6.5 Opening and Closing of the Device................................................................................................. 28
6.6 Operation......................................................................................................................................... 29
6.6.1 Starting the grinding process....................................................................................................... 29
6.6.2 Adding sample material ............................................................................................................... 30
6.6.3 Removing sample material after grinding.................................................................................... 30
6.6.4 Stopping the grinding process ..................................................................................................... 31
6.7 Replacing the bottom sieve ............................................................................................................. 32
7Cleaning, Wear and Maintenance ...................................................................................................... 34
7.1 Cleaning........................................................................................................................................... 34
7.1.1 Removing and installing the feed hopper .................................................................................... 35
7.1.2 Cleaning the feed hopper ............................................................................................................ 35
7.2 Wear ................................................................................................................................................ 36

4
7.2.1 Replacing the cutting bars ........................................................................................................... 36
7.3 Maintenance .................................................................................................................................... 37
7.3.1 Adjusting the cutting bars ............................................................................................................ 37
7.3.2 Checking the safety switch .......................................................................................................... 38
7.4 Return for Service and Maintenance............................................................................................... 40
8Accessories ......................................................................................................................................... 41
9Disposal................................................................................................................................................ 42
10 Index ..................................................................................................................................................... 43

Notes on the manual
5

Notes on the manual
6
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 http://www.retsch.com on the pages for
the specific device concerned.
Amendment status:
The document amendment 0002 of the "Cutting Mill SM 400" manual has been prepared in
accordance with the Machinery Directive 2006/42/EC.
1.1 Disclaimer
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 document the following signs and symbols are being used:

Reference to a recommendation and/or an important information
→
Reference to a chapter, table or figure

Action instruction
│Name│
Software menu function
[Name]
Software button
⟨Name⟩
Software checkbox
1.4 Explanations of the Safety Instructions
The following warnings in this manual warn of possible risks and damage:
DANGER
D1.0000
Risk of fatal injuries
Source of danger

Notes on the manual
7
−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.
1.5 General Safety Instructions
CAUTION
C2.0002

Notes on the manual
8
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
All those operating, cleaning or working with or on the device.
This device is a modern, powerful product from Retsch GmbH and has been developed in line
with the state-of-the art. The device is safe to use when operated correctly and when following
the instructions in this manual.
Safety Officer:
The operating company itself must ensure that people authorised to work on the device…
−have read and understood all regulations contained in the chapter on safety;
−are aware before they start work of all instructions and regulations for the target group
related to the work;
−have easy access to the technical documentation for this device at all times;
−have been familiarised with the safe and correct handling of the device before starting
work on it, by means of a verbal introduction by a competent person and/or using this
technical documentation.
CAUTION Improper operation can lead to personal injuries and damage to property. The
operating company itself is responsible for its own safety and that of its staff. The operating
company itself is responsible for ensuring that no unauthorised persons have access to the
device.
CAUTION People under the influence of intoxicating substances (medications, drugs,
alcohol), fatigue or health disorders are not allowed to operate the device.
CAUTION
C3.0015
Risk of injury
Improper modifications to the device
−Improper modifications to the device can result in injuries.
•Do not make any unauthorised changes to the device.
•Only use the spare parts and accessories approved by Retsch
GmbH!
NOTICE
N2.0012
Changes to the device
Improper modifications
−The conformity declared by Retsch GmbH with the European Directives
will lose its validity.
−Any warranty claims will be terminated.
•Do not make any modification to the device.
•Use spare parts and accessories that have been approved by Retsch
GmbH exclusively.

Notes on the manual
9
1.6 Repairs
This manual does not contain any repair instructions. For safety reasons, repairs may only be
carried out by Retsch GmbH or an authorised representative or by qualified service technicians.
In case of repair, please inform…
…the Retsch GmbH representative in your country,
…your supplier, or
…Retsch GmbH directly.
Service address:
1.7 Responsibility of the operating company
The user of the machine (the operating company) is responsible for ensuring that every person
who works on the machine has been given precise instructions on the basis of this Manual
(commissioning, operation, servicing). Training for operators must cover the following points:
•Intended purpose of the machine
•Hazardous areas
•Safety provisions
•You must be satisfied that staff have the requisite qualifications
•General instructions and actions in an emergency
•Applicable accident prevention regulations
•Personal protective clothing required
•Operation of the machine in line with this Manual
•Accepted, applicable rules governing occupational health and safety
Incorporate the SM 400 into your emergency planning:
•Integrate the SM 400 into your operating procedures regulating conduct in
emergency situations.
•To prevent accidents during work processes, incorporate the SM 400 into
your risk assessment in acc. with the German Ordinance on Industrial
Health and Safety (BetrSichV).
•Take into consideration fire-fighting measures, combatting the effect of
leaking substances, potential radiation, rescuing people, first-aid
measures.
1.8 Personnel qualification and target group of this manual
This manual is intended for trained assembly personnel , maintenance staff and users .

Notes on the manual
10
Training must be provided in the language of the personnel concerned so that all instructions
are understood. As such the following personnel qualifications are necessary:
Assembly,
commissioning,
instruction,
troubleshooting,
servicing work,
as described in this
manual
Skilled technical staff as well as external service providers who
speak German and the language of the operating personnel.
The usual skills communicated during training, e.g. as a plant
fitter, mechatronics engineer or toolmaker, are prerequisites for
the assembly, commissioning and troubleshooting of the
machine. Employees must be able to manage all applicable
mechanical tasks and be familiar with and have experience of
dealing with these.
Operation
Education/training in accordance with the above section,
responsibilities of trained employees.
Servicing/repairs
They must be experienced, trained professionals, familiar with
requirements and guidelines.

Confirmation Form for the Managing Operator
11
2 Confirmation Form for the Managing Operator
This manual contains essential instructions for operating and maintaining the device which must
be strictly observed. It is essential that they be read by the user and by the qualified staff
responsible for the device before the device is commissioned. This manual must be available
and accessible at the place of use at all times.
The user of the device herewith confirms to the managing operator (owner) that he has received
sufficient instructions about the operation and maintenance of the system. The user has
received the manual, has read and taken note of its contents and consequently has all the
information required for safe operation and is sufficiently familiar with the device.
The managing operator should for legal protection have the user confirm the instruction about
the operation of the device.
I have read and taken note of the contents of all chapters in this manual as well as all
safety instructions and warnings.
User
Surname, first name (block letters)
Position in the company
Place, date and signature
Managing operator or service technician
Surname, first name (block letters)
Position in the company
Place, date and signature

Technical Data
12
3 Technical Data
3.1 Protective Equipment
−This device can only be started when the collecting receptacle has been inserted and
screwed tight.
−A safety switch on the side of the housing, which is connected to the collecting receptacle,
prevents the device starting in an unsafe state.
−Opening the collecting receptacle leads to the motor switching off and so to the immediate
stopping of the grinding process.
−The motor protection switch switches the drive motor off if the rotor is blocked.
3.2 Degree of Protection
−IP 54
3.3 Emissions
Noise levels (in accordance with DIN 45635-31-01-KL3):
−When idling at a distance of 1 m: ~ 61.5 dB(A)
The noise levels are influenced by the properties of the sample material.
−~ 75 to 86 dB(A), peaks of up to 92 dB(A)
Example:
With molasses pellets as sample material, the noise level is 90.8 dB(A).
CAUTION
C4.0020
Failure to hear acoustic signals
Loud noises during grinding
−It is possible that acoustic warning signals and voice communication
cannot be heard.
•When planning the acoustic signals in the working environment, the
volume of noises arising during grinding should be taken into
consideration. It may be possible to use additional visual signals.
CAUTION
C5.0050
Damage to hearing
A high sound level can arise depending on the type of material, the knife set
used and the duration of grinding.
−Excessive noise, in terms of volume and duration, can cause impairments
or lasting damage to hearing.
•Suitable noise protection measures must be taken, or hearing
protection worn.
3.4 Electromagnetic Compatibility (EMC)
−EMC class in accordance with DIN EN 55011: B
3.5 Rated Power

Technical Data
13
~ 3 000 W (VA) / 400 V / 16 A
3.6 Motor Rotation Speed
−280 revolutions per minute (rpm)
3.7 Dimensions and Weight
−Height: ~ 1 768 mm (with standard hopper)
−Width: ~ 695 mm
−Depth: ~ 648 mm (without standard hopper)
−Depth: ~ 692 mm (with standard hopper)
−Weight: ~ 230 kg
3.8 Required Floor Space
−Width of the stand space: 695 mm
−Depth of the stand space: 692 mm
No safety distance is necessary!
Requirements of the location:
This floor model must be placed on an even, firm base.
3.9 Receptacle Volume
−< 5 l
3.10 Feed Grain Size
−Feed size: < 170 x 220 mm
−Final fineness: 1 –20 mm (depending on the bottom sieve used)

Technical Data
14
3.11 Installation drawing

Technical Data
15

Packaging, Transport and Installation
16
4 Packaging, Transport and Installation
4.1 Packaging
The packaging has been adapted to the mode of transport. It complies with the generally
applicable packaging guidelines.
NOTICE
N3.0001
Complaint or return
Keeping the packaging
−Inadequate packaging and insufficient securing of the device can
jeopardise the warranty claim in the event of a complaint or return.
•Keep the packaging for the duration of the warranty period.
4.2 Transport
DANGER
D2.0001
Serious personal injury
Suspended loads
−If dropped, the great weight of the device would result in serious injuries
or death.
•People must never stand below suspended loads!
NOTICE
N4.0017
Damage to components
Transport
−Mechanical or electronic components may be damaged during transport.
•The device must not be knocked, shaken or thrown during transport.
NOTICE
N5.0014
Complaints
Incomplete delivery or transport damage
−The forwarding agent and Retsch GmbH must be notified immediately in
the event of transport damage. It is otherwise possible that subsequent
complaints will not be recognised.
•Please check the delivery on receipt of the device for its
completeness and intactness.
•Notify your forwarding agent and Retsch GmbH within 24 hours.
Fig. 1: Transport with forklift
Z

Packaging, Transport and Installation
17
WARNING
W2.0009
Serious personal injury
Excessive weight
−Due to its very heavy weight of 220 kg, serious personal injuries may
result when the device is lifted.
•The device may only be lifted and transported using lifting
apparatus!
CAUTION Only deploy suitable lifting apparatus that has been approved for the weight of
the device.
The SM 400 has a base frame (Z), by which the device can be lifted and transported with the
help of lifting apparatus.
Using lifting apparatus, e.g. a forklift, drive under the base frame (Z).
Using the lifting apparatus, lift the device slowly and stabilise it to prevent it from overturning.
4.3 Temperature Fluctuations and Condensation
NOTICE
N6.0016
Damaged components due to condensation
Temperature fluctuations
−The device may be exposed to substantial fluctuations in temperature
during transport. The ensuing condensation can damage electronic
components.
•Wait until the device has acclimatised before putting it into service.
Temporary storage:
Also in case of an interim storage the device must be stored dry and within the specified
ambient temperature range.
4.4 Conditions for the Installation Site
−Installation height: max. 2 000 m above sea level
−Ambient temperature: 5 °C –40 °C
NOTICE
N7.0021
Ambient temperature
Temperatures outside the permitted range
−Electronic and mechanical components may be damaged.
−The performance data alter to an unknown extent.
•Do not exceed or fall below the permitted temperature range (5 °C to
40 °C ambient temperature) of the device.
−Maximum relative humidity < 80 % (at ambient temperatures ≤31 °C)
For ambient temperatures UTbetween 31 °C and 40 °C, the maximum relative humidity value LF
linearly decreases according to LF= –(UT–55) / 0.3:
Ambient temperature
Max. rel. humidity
≤31 °C
80 %

Packaging, Transport and Installation
18
33 °C
73.3 %
35 °C
66.7 %
37 °C
60 %
39 °C
53.3 %
40 °C
50 %
NOTICE
N8.0015
Humidity
High relative humidity
−Electronic and mechanical components may be damaged.
−The performance data alter to an unknown extent.
•The relative humidity in the vicinity of the device should be kept as
low as possible.
4.5 Electrical Connection
WARNING
W3.0005
Danger to life due to electric shock or fire
Incorrect connection to the power supply may result in parts of the housing or
cables being live and in fires starting.
−Serious injuries or death due to an electric shock.
−Serious injuries or death due to fires.
•The device may only be connected by a qualified electrician.
NOTICE
N9.0022
Electrical connection
Failure to observe the values on the type plate
−Electronic and mechanical components may be damaged.
•Connect the device only to a mains supply matching the values on
the type plate.
NOTICE
N10.0005
Electrical connection
Wrong direction of rotation on drive motor
−Electronic and mechanical components may be damaged.
−Insufficient grinding of the sample material.
•Before putting into operation for the first time, check whether the
direction of rotation of the motor (fan direction of rotation) complies
with the direction arrow on the belt cover.
4.6 Type Plate Description

Packaging, Transport and Installation
19
Fig. 2: Type plate
1 Device designation
2 Year of production
3 Part number
4 Serial number
5 Manufacturer’s address
6 CE marking
7 Disposal label
8 Bar code
9 Power version
10 Mains frequency
11 Capacity
12 Amperage
13 Number of fuses
14 Fuse type and fuse strength
In the case of queries please provide the device designation (1) or part number (3), as well
as the serial number (4) of the device.
1
2
3
4
5
6
7
8
9
10
11
12
14
13

First Commissioning
20
5 First Commissioning
WARNING
W4.0002
Danger to life through electric shock
Damaged power cable
−Operating the device with a damaged power cable or plug can lead to life-
threatening injuries caused by an electric shock.
•Before operating the device, check the power cable and plug for
damage.
•Never operate the device with damaged power cable or plug!
WARNING
W5.0004
Danger to life due to electric shock
Electrically conductive parts of the housing due to contact with live cables inside
the housing
−An electric shock can result in burns, cardiac arrhythmia, respiratory
arrest and cardiac arrest.
•Always operate the device using a mains socket protected by a
residual current circuit breaker (RCCB).
NOTICE
N11.0002
Setting up the device
Disconnecting the device from the mains
−A separation of the device from the mains must be possible at any time.
•Set up the device in such a way, that the connection for the power
cable is always easily accessible.
NOTICE
N12.0004
Setting up the device
Vibrations during operation
−Depending on the operating mode of the device, slight vibrations may
occur.
•Set up the device only on a vibration-free, plane and stable surface.
5.1 Installation of the Device
Fig. 3: Securing on the transport pallet
On delivery, the device is screwed tight onto the transport pallet.
Remove the four hexagon screws (SC) from the transport pallet.
Using a forklift, lift the SM 400
Secure the four device feet supplied (vibration dampers) to the base frame.
SC