Retsch SR 300 User manual

© Retsch GmbH, 42781 Haan, Retsch-Allee 1-5, Germany | 21.12.2016 Version 0002
Manual
Rotor Beater Mill SR 300
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 ............................................................................................................................. 6
1.1 Disclaimer.......................................................................................................................................... 6
1.2 Copyright............................................................................................................................................ 6
1.3 Explanations of the Safety Instructions ............................................................................................. 7
1.4 General Safety Instructions ............................................................................................................... 8
1.5 Repairs............................................................................................................................................... 9
2Confirmation Form for the Managing Operator................................................................................ 10
3Technical Data ..................................................................................................................................... 11
3.1 Protective Equipment....................................................................................................................... 11
3.2 Degree of Protection........................................................................................................................ 11
3.3 Emissions......................................................................................................................................... 11
3.4 Electromagnetic Compatibility (EMC).............................................................................................. 12
3.5 Rated Power.................................................................................................................................... 12
3.6 Motor Rotation Speed...................................................................................................................... 12
3.7 Dimensions and Weight................................................................................................................... 12
3.8 Required Floor Space...................................................................................................................... 13
3.9 Receptacle Volume.......................................................................................................................... 13
3.10 Feed Grain Size............................................................................................................................... 13
3.11 Suitable Sieve Diameters ................................................................................................................ 13
4Packaging, Transport and Installation .............................................................................................. 14
4.1 Packaging........................................................................................................................................ 14
4.2 Transport.......................................................................................................................................... 14
4.3 Temperature Fluctuations and Condensation ................................................................................. 15
4.4 Conditions for the Installation Site................................................................................................... 15
4.5 Electrical Connection....................................................................................................................... 16
4.6 Type Plate Description..................................................................................................................... 17
5First Commissioning........................................................................................................................... 18
5.1 Setting up as Table-top Device........................................................................................................ 19
5.2 Setting up on Base Frame............................................................................................................... 20
6Operating the Device .......................................................................................................................... 25
6.1 Use of the Device for the Intended Purpose.................................................................................... 25
6.2 Principle of Operation ...................................................................................................................... 26
6.3Views of the Instrument................................................................................................................... 27
6.3.1 Front............................................................................................................................................. 27
6.3.2 Back............................................................................................................................................. 28
6.4 Switching On / Off............................................................................................................................ 29
6.5 Opening and Closing of the Device................................................................................................. 29
6.5.1 Opening ....................................................................................................................................... 30
6.5.2 Closing......................................................................................................................................... 30
6.6 Emergency Unlocking...................................................................................................................... 31
6.7 Inserting the Grinding Set................................................................................................................ 32
6.7.1 Inserting the Grinding Chamber Cartridge................................................................................... 33
6.7.2 Inserting the Rotor ....................................................................................................................... 33
6.7.3 Inserting the Retaining Frame ..................................................................................................... 34
6.8 Removing the Grinding Set.............................................................................................................. 35
6.9 Mounting the Sample Receptacle.................................................................................................... 35
7Controlling the Device ........................................................................................................................ 37
7.1 Operating Controls, Display and Functions..................................................................................... 37
7.2 Manual Mode................................................................................................................................... 37
7.2.1 Setting the Rotation Speed.......................................................................................................... 37
7.2.2 Start Process ............................................................................................................................... 37
7.2.3 Feeding Sample Material............................................................................................................. 38

4
7.2.4 Stop Process................................................................................................................................ 38
8Error Messages and Information Notes............................................................................................ 39
8.1 Error Messages ............................................................................................................................... 39
8.2 Information Notes ............................................................................................................................ 39
9Return for Service and Maintenance................................................................................................. 40
10 Cleaning, Wear and Maintenance ...................................................................................................... 41
10.1 Cleaning........................................................................................................................................... 41
10.1.1 Cleaning the Grinding Set........................................................................................................ 42
10.1.2 Cleaning the Feed Hopper....................................................................................................... 44
10.2 Wear ................................................................................................................................................ 44
10.3 Maintenance .................................................................................................................................... 45
11 Accessories ......................................................................................................................................... 46
11.1 Vibratory Feeder DR 100................................................................................................................. 46
11.2 Cyclone Separator........................................................................................................................... 48
12 Disposal................................................................................................................................................ 54
13 Index ..................................................................................................................................................... 55

Notes on the Manual
5

Notes on the Manual
6
1 Notes on the Manual
Dear user,
please read the following manual referring to this device carefully before starting any
installation, commissioning and operation.
This manual is a technical guide on how to operate the device safely and it contains all the
information required for the areas specified in the table of contents. This technical
documentation is a reference and instruction manual. The individual chapters are complete in
themselves. Familiarity (of the respective target groups defined per area) with the relevant
chapters is a precondition for the safe and appropriate use of the device.
This manual does not contain any repair instructions. In case of any obscurities or questions
with regards to this document or the device, as well as if faults arise or repairs are necessary,
please contact your supplier or get in touch with Retsch GmbH directly.
Application-technical information relating to samples to be processed are not or only to a certain
extend included. However, more information thereof can be found in the internet on the
webpage of the respective device on the Retsch GmbH homepage (http://www.retsch.com).
Revision status:
This document revision 0002 refers to the manual "Rotor Beater Mill SR 300" in compliance with
the Directive of Machinery 2006/42/EC.
1.1 Disclaimer
This document has been prepared with due care. Technical and software based modifications
are reserved. No liability is assumed for data loss, personnel injury or damage to the device
which results from the failure to observe the instructions and/or warnings in this document.
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.

Notes on the Manual
7
1.3 Explanations of the Safety Instructions
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
In this document the following safety instructions warn of possible dangers and damages:
DANGER
D1.0000
Type of danger / personal injury
Source of danger
Possible consequences if the dangers are not observed.
Instructions and information on how the dangers are to be avoided.
Life-threatening personal injuries may result from disrespecting the safety instruction for
danger. There exists a very high risk of hazard of life or permanent injury to personnel.
Additionally, in continuous text or action instructions the signal word DANGER is used.
WARNING
W1.0000
Type of danger / personal injury
Source of danger
Possible consequences if the dangers are not observed.
Instructions and information on how the dangers are to be avoided.
Serious personal injuries may result from disrespecting the warning notice. There exists an
elevated risk of an accident or severe injury to personnel. Additionally, in continuous text or
action instructions the signal word WARNING is used.
CAUTION
C1.0000
Type of danger / personal injury
Source of danger
Possible consequences if the dangers are not observed.
Instructions and information on how the dangers are to be avoided.
Moderate or mild personal injuries may result from disrespecting the safety instruction for
caution. There exists a medium or low risk of an accident or injury to personnel. Additionally, in
continuous text or action instructions the signal word CAUTION is used.

Notes on the Manual
8
NOTICE
N1.0000
Type of property damage
Source of property damage
Possible consequences if the notices are not observed.
Instructions and information on how the property damages are to be
avoided.
Property damages may result from disrespecting the notice. However, there exists no risk of
an injury to personnel. Additionally, in continuous text or action instructions the signal word
NOTICE is used.
1.4 General Safety Instructions
CAUTION
C2.0002
Read the manual
Non-observance of the operating instructions
The non-observance of this manual can result in personal injuries.
Read the manual before using the device.
Target group:
All persons concerned with this device in any form.
This device is a modern, high performance product from Retsch GmbH and complies with the
state of the art. Operational safety is given if the device is handled for the intended purpose and
attention is given to this technical documentation.
Safety manager:
The managing operator himself must ensure that the people entrusted with working on the
device…
have noted and understood all the regulations regarding safety,
are familiar before starting work with all the operating instructions and specifications for
the target group relevant to their work,
have unrestricted and free access to the technical documentation of this device,
are familiarising new personnel with the safe handling of the device and its use for its
intended purpose before starting work either by verbal instructions from a competent
person and/or by means of this technical documentation.
CAUTION Improper operation can result in personal injuries and material damage. The
managing operator himself is responsible for his own safety and that of his employees. The
managing operator himself is responsible that no unauthorised person has access to the device.
CAUTION Persons who are under the influence of intoxicating substances
(pharmaceuticals, drugs, alcohol), fatigue or health disorders must not operate the device.

Notes on the Manual
9
CAUTION
C3.0015
Changes to the device
Improper modifications
Changes to the device can lead to personal injuries.
Do not make any modification to the device.
Use spare parts and accessories that have been approved by Retsch
GmbH exclusively.
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.
1.5 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:

Confirmation Form for the Managing Operator
10
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
11
3 Technical Data
3.1 Protective Equipment
This device is equipped with a door lock. The locking mechanism prevents the device from
being started when in an unsafe state.
The device can only be started when the door is closed.
It is only possible to open the door when the device has come to a halt.
3.2 Degree of Protection
IP41
3.3 Emissions
CAUTION
C4.0020
Possibility of acoustic signals not being heard
Loud grinding noises
Possible acoustic alarms and voice communication might not be heard.
Consider the volume of the grinding noise in relation to other
acoustic signals in the work environment. Additional visual signals
may be used.
CAUTION
C5.0044
Hearing damage
A high sound level may be generated depending on the type of material, the
grinding set used, the grinding frequency set and the duration of the grinding
Excessive noise in terms of level and duration can cause impairments or
permanent damage to hearing.
Ensure that suitable noise protection measures are taken, or wear
ear protection.
Sound parameters:
The sound parameters are influenced by the properties of the sample material and the rotation
speed.
Example 1:
Feed material:
Limestone (< 5 mm)
Bottom sieve:
0.5 mm
Speed:
3 000 rpm
At these operating conditions, the workplace related equivalent continuous sound level
Leq = 76.3 dB(A).

Technical Data
12
Example 2:
Feed material:
Limestone (< 5 mm)
Bottom sieve:
0.5 mm
Speed:
5 000 rpm
At these operating conditions, the workplace related equivalent continuous sound level
Leq = 72.8 dB(A).
Example 3:
Feed material:
Limestone (< 5 mm)
Bottom sieve:
0.5 mm
Speed:
10 000 rpm
At these operating conditions, the workplace related equivalent continuous sound level
Leq = 77.2 dB(A).
3.4 Electromagnetic Compatibility (EMC)
EMC class according to DIN EN 55011: B
3.5 Rated Power
~ 2 500 W (VA)
3.6 Motor Rotation Speed
Rated motor rotation speed: 3 000 –10 000 revolutions per minute (rpm).
Adjustable in increments of 500 rpm.
In order to reduce the heating of the grinding material caused by high friction forces at high
speeds, a distance rotor can be used for the grinding of heat-sensitive products.
3.7 Dimensions and Weight
All specifications, unless otherwise stated, include the optional base frame.
Height: 1 200 mm
Height incl. vibratory feeder DR 100: ~ 1 450 mm
Width: 580 mm
Width incl. cyclone separator: 930 mm
Depth: 700 mm
Weight: ~ 60 kg
Weight without base frame: ~ 50 kg

Technical Data
13
3.8 Required Floor Space
CAUTION
C6.0007
Falling down of the device
Incorrect positioning or insufficient working space
Due to its weight, the device can inflict personal injury if it falls down.
The device must, when used as table-top device, only be operated on
a sufficiently large, strong and stable workplace.
The device must, when used as table-top device, be firmly screwed
to the working surface.
Width with open door: ~ 740 mm
Depth with open door: ~ 640 mm
Width of the base: 940 mm (without cyclone separator)
1 130 mm (with cyclone separator)
Depth of the base: 740 mm (without base frame)
800 mm (with base frame)
Location requirements:
When used as table-top device, the device must be bolted to a vibration-free, plane, stable and
free surface. When used as floor-standing device (mounted on the optional base frame), the
device must be placed on a level base and secured against rolling away.
3.9 Receptacle Volume
The receptacle volume (feed volume) depends on the sample material and the collecting
receptacle used.
Feed volume: < 5 l (with 5 l collecting receptacle)
max. 26 l (with 30 l collecting receptacle)
3.10 Feed Grain Size
Feed grain size: ≤25 mm
3.11 Suitable Sieve Diameters
Trapezoidal perforation: 0.08 mm / 0.12 mm / 0.20 mm / 0.25 mm / 0.35 mm / 0.50 mm /
0.75 mm / 1.00 mm / 1.25 mm / 1.50 mm / 2.00 mm
Round perforation: 3.00 mm / 4.00 mm / 10.00 mm
All sieve inserts are available as 360° sieve insert (ring sieve), as well as 180° sieve insert. The
360° sieve inserts are particularly suitable for the grinding of soft and brittle materials. To
achieve an additional size reduction effect through impact, a 180° grinding insert can be used
together with a 180° sieve insert for medium-hard materials.

Packaging, Transport and Installation
14
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
Storage of the packaging
In the event of a complaint or return, the warranty claim may be
endangered if the packaging is inadequate or the device has not been
secured correctly.
Keep the packaging for the duration of the warranty period.
4.2 Transport
WARNING
W2.0005
Serious personal injury
Falling loads
Due to the heavy weight of the device, serious personal injuries can be
caused if it falls down.
Lifting above head height is not permissible!
NOTICE
N4.0017
Transport
Mechanical or electronic components may be damaged.
The device may not be knocked, shaken or thrown during transport.
NOTICE
N5.0014
Complaints
Incomplete delivery or transportation damage
The forwarding agent and Retsch GmbH must be notified immediately in
the event of transportation 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.

Packaging, Transport and Installation
15
Fig. 1: Transportation lug
CAUTION The weight of the SR 300 without collecting receptacle and base frame amounts
approx. 50 kg. The device may only be lifted or transported by at least two people.
The SR 300 has a transportation lug (A) at which the device can be lifted and transported by
means of hoists.
Attach the hoist only to the supplied transportation lug (A).
Please insert a piece of cloth, polystyrene or cardboard between the rear edge of the feed
hopper and the sling or hoisting chain, in order to avoid scratches on the feed hopper.
Lift the device slowly and stabilise it to prevent tipping backwards.
CAUTION Only use suitable hoist that is designed for the weight of the device.
If desired, the transportation lug can be removed after installation and the threaded hole can be
sealed with the supplied plastic screw (PS).
4.3 Temperature Fluctuations and Condensation
NOTICE
N6.0016
Temperature fluctuations
The device may be subject to strong temperature fluctuations during transport
(e.g. aircraft transport)
The resultant condensed water may damage electronic components.
Wait before commissioning until the device has been acclimatised.
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
A

Packaging, Transport and Installation
16
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 %
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 When connecting the power cable to the mains supply, use an external fuse that
complies with the regulations applicable to the place of installation.
Check the type plate for details on the necessary voltage and frequency for the device.
The listed values must agree with the existing mains supply.
Only use the supplied power cable to connect the device to the mains supply.
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 mains supply matching the values on the
type plate.

Packaging, Transport and Installation
17
4.6 Type Plate Description
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
18
5 First Commissioning
WARNING
W3.0002
Danger to life through electric shock
Damaged power cable
An electric shock can cause burns, cardiac arrhythmia, respiratory arrest,
as well as cardiac arrest.
Never use a damaged power cable to connect the device to the
mains!
Check the power cable and the plug for any damage before use.
NOTICE
N10.0002
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
N11.0004
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.

First Commissioning
19
5.1 Setting up as Table-top Device
Fig. 3: Removing the transport profiles
Loosen the four hexagon socket head screws (SC) to remove the transport profiles (TP) from
the SR 300.
Position the SR 300 on the designated table as close as possible to the front edge of the
table. Make sure that the discharge flange (AF) for the sample receptacle does not touch the
edge of the table.
NOTICE The table must be designed for the weight of approx. 50 kg of the SR 300!
Furthermore, the table must be plane, stable and vibration free!
AF
TP
SC

First Commissioning
20
Fig. 4: Table mounting
Bolt the SR 300 to the tabletop by means of four M8 screws of the required length (not
supplied). Use the second (LP2) and fourth pair of holes (LP4) of the U-profiles for this
purpose.
5.2 Setting up on Base Frame
The base frame for the SR 300 is available as an optional accessory from your supplier or
from Retsch GmbH directly.
Fig. 5: Pre-assembled component parts of the base frame
The following component parts are already pre-assembled for an easier assembly of the base
frame:
UG2
UG1
UG3
UG4
AF
LP2
LP4