Retsch SM300 User manual

© Retsch GmbH, 42781 Haan, Retsch-Allee 1-5, Germany 14.11.2012 0005
Manual
Cutting Mill SM300
Translation

2
Copyright
© Copyright by
Retsch GmbH
Haan, Retsch-Allee 1-5
D-42781 Haan
Federal Republic of Germany

3
1Notes on the Operating Manual ............................................................................................................5
1.1 Explanations of the safety warnings.................................................................................................. 6
1.2 General safety instructions ................................................................................................................ 7
1.3 Repairs............................................................................................................................................... 8
2Confirmation ...........................................................................................................................................9
3Transport, scope of delivery, installation..........................................................................................10
3.1 Packaging........................................................................................................................................ 10
3.2 Transport.......................................................................................................................................... 10
3.3 Temperature fluctuations and condensed water ............................................................................. 10
3.4 Conditions for the place of installation............................................................................................. 10
3.5 Removing Transport Safeguards..................................................................................................... 11
3.6 Mounting the Feed Hopper.............................................................................................................. 11
3.6.1 Removing the Transport Safeguard ............................................................................................ 11
3.6.2 Mounting the Feed Hopper.......................................................................................................... 12
3.7 Installation of the machine............................................................................................................... 13
3.8 Electrical connection........................................................................................................................ 14
3.9 Type plate description...................................................................................................................... 14
4Technical data.......................................................................................................................................16
4.1 Use of the machine for the intended purpose.................................................................................. 16
4.2 Emissions......................................................................................................................................... 17
4.3 Degree of protection ........................................................................................................................ 17
4.4 Motor rotation speed........................................................................................................................ 17
4.5 Receptacle volume.......................................................................................................................... 17
4.6 Rated power .................................................................................................................................... 17
4.7 Dimensions and weight.................................................................................................................... 17
4.8 Required floor space........................................................................................................................ 18
5Operating the machine ........................................................................................................................19
5.1 Views of the Instrument................................................................................................................... 19
5.2 Operating elements and displays .................................................................................................... 21
5.3 Overview table of the parts of the device ........................................................................................ 22
5.4 Opening and closing of the grinding chamber................................................................................. 23
5.5 Mounting the bottom sieve............................................................................................................... 23
5.6 Replacing the rotor .......................................................................................................................... 24
5.6.1 Removing the Rotor..................................................................................................................... 26
5.6.2 Inserting the Rotor ....................................................................................................................... 26
5.7 Inserting the filter unit and collecting receptacle.............................................................................. 26
5.8 Starting the grinding process........................................................................................................... 27
5.9 Stopping the grinding process......................................................................................................... 27

4
6Mode of Operation of Feed Hopper ....................................................................................................28
7Assembling and using the cyclone ....................................................................................................29
7.1 Cyclone assembly............................................................................................................................ 29
7.1.1 Inserting the wide mouth bottle adapter ...................................................................................... 33
8Cleaning and service ...........................................................................................................................34
8.1 Adjusting the cutting bars ................................................................................................................ 34
9Fault messages.....................................................................................................................................37
10 Disposal.................................................................................................................................................38
11 Index ......................................................................................................................................................39
Appendix ............................................................................................................................... following pages

Notes on the Operating Manual
5
1 Notes on the Operating Manual
This operating 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 according to area) with the
relevant chapters is a precondition for the safe and appropriate use of the device.
This operating manual does not contain any repair instructions. If faults arise or
repairs are necessary, please contact your supplier or get in touch with Retsch
GmbH directly.
Application technology information relating to samples to be processed is not
included but can be read on the Internet on the respective device’s page at
www.retsch.com.
Changes
Subject to technical changes.
Copyright
Disclosure or reproduction of this documentation, use and disclosure of its contents
are only permitted with the express permission of Retsch GmbH.
Infringements will result in damage compensation liability.

Notes on the Operating Manual
6
1.1 Explanations of the safety warnings
In this Operating Manual we give you the following safety warnings
Serious injury may result from failing to heed these safety warnings. We give you
the following warnings and corresponding content.
WARNING
Type of danger / personal injury
Source of danger
–Possible consequences if the dangers are not observed.
•Instructions on how the dangers are to be avoided.
We also use the following signal word box in the text or in the instructions on action
to be taken:
WARNING
Moderate or mild injury may result from failing to heed these safety warnings.
We give you the following warnings and corresponding content.
CAUTION
Type of danger / personal injury
Source of danger
–Possible consequences if the dangers are not observed.
•Instructions on how the dangers are to be avoided.
We also use the following signal word box in the text or in the instructions on action
to be taken:
CAUTION
In the event of possible property damage we inform you with the word
“Instructions” and the corresponding content.
NOTICE
Nature of the property damage
Source of property damage
–Possible consequences if the instructions are not observed.
•Instructions on how the dangers are to be avoided.
We also use the following signal word in the text or in the instructions on action to
be taken:
NOTICE

Notes on the Operating Manual
7
1.2 General safety instructions
CAUTION
Read the Operating Manual
Non-observance of these operating instructions
–The non-observance of these operating instructions can
result in personal injuries.
•Read the operating manual before using the device.
•We use the adjacent symbol to draw attention to the
necessity of knowing the contents of this operating
manual.
Target group : All persons concerned with the machine in any form
This machine is a modern, high performance product from Retsch GmbH and
complies with the state of the art. Operational safety is given if the machine is
handled for the intended purpose and attention is given to this technical
documentation.
You, as the owner/managing operator of the machine, must ensure that the people
entrusted with working on the machine:
•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 for them,
•have easy access always to the technical documentation for this machine,
•and that new personnel before starting work on the machine are familiarised
with the safe handling of the machine and its use for its intended purpose,
either by verbal instructions from a competent person and/or by means of
this technical documentation.
Improper operation can result in personal injuries and material damage. You are
responsible for your own safety and that of your employees.
Make sure that no unauthorised person has access to the machine.
CAUTION
Changes to the machine
–Changes to the machine may lead to personal injury.
•Do not make any change to the machine and use spare parts and
accessories that have been approved by Retsch exclusively.
NOTICE
Changes to the machine
–The conformity declared by Retsch with the European Directives will lose
its validity.
–You lose all warranty claims.
•Do not make any change to the machine and use spare parts and
accessories that have been approved by Retsch exclusively.

Notes on the Operating Manual
8
Reperaturen
1.3 Repairs
This operating manual does not contain any repair instructions. For your own
safety, repairs may only be carried out by Retsch GmbH or an authorized
representative or by Retsch service engineers.
In that case please inform:
The Retsch representative in your country
Your supplier
Retsch GmbH directly
Your Service Address:

Confirmation
9
Bestätigung
2 Confirmation
This operating manual contains essential instructions for operating and maintaining
the device which must be strictly observed. It is essential that they be read by the
operator and by the qualified staff responsible for the device before the device is
commissioned. This operating 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
(s)he has received sufficient instructions about the operation and maintenance of
the system. The user has received the operating 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.
As the owner/managing operator you should for your own protection have your
employees confirm that they have received the instructions about the operation of
the machine.
I have read and taken note of the contents of all chapters in this operating
manual as well as all safety instructions and warnings.
User
Surname, first name (block letters)
Position in the company
Signature
Service technician or operator
Surname, first name (block letters)
Position in the company
Place, date and signature

Transport, scope of delivery, installation
10
3 Transport, scope of delivery, installation
3.1 Packaging
The packaging has been adapted to the mode of transport. It complies with the
generally applicable packaging guidelines.
NOTICE
Storage of packaging
–In the event of a complaint or return, your warranty claims may be
endangered if the packaging is inadequate or the machine has not been
secured correctly.
•Please keep the packaging for the duration of the warranty period.
3.2 Transport
NOTICE
Transport
–Mechanical or electronic components may be damaged.
•The machine may not be knocked, shaken or thrown during
transport.
3.3 Temperature fluctuations and condensed water
NOTICE
Temperature fluctuations
The machine may be subject to strong temperature fluctuations during transport
(e.g. aircraft transport)
–The resultant condensed water may damage electronic components.
•Protect the machine from condensed water.
3.4 Conditions for the place of installation
NOTICE
Ambient temperature
–Electronic and mechanical components may be damaged and the
performance data alter to an unknown extent.
•Do not exceed or fall below the permitted temperature range of the
machine (5°C to 40°C / ambient temperature).
Atmospheric humidity:
Maximum relative humidity 80% at temperatures up to 31°C, decreasing linearly up
to 50% relative humidity at 40°C

Transport, scope of delivery, installation
11
NOTICE
Atmospheric humidity
–Electronic and mechanical components may be damaged and the
performance data alter to an unknown extent.
•Do not exceed the admissible range for atmospheric humidity.
3.5 Removing Transport Safeguards
Fig. 1: Removing Transport Aid
Lift the device only by the transport aid (TH). The weight of the device is approx.
160 kg. Choose a safe lifting sling that is approved for this weight.
Keep the eye bolt (TH) for transport again at a later date.
The eye bolt must be removed before the hopper is assembled.
3.6 Mounting the Feed Hopper
WARNING
1.W0004
Risk of injury to skin and hands
Fast rotating cutting blade
–There is a risk of injuring hands, fingers and skin.
•Never operate the device without a feed hopper.
NOTICE
Transport safeguard
–Components may be damaged.
•Operate the machine only without the transport safeguard or
transport the machine only with transport safeguard.
3.6.1 Removing the Transport Safeguard
TH

Transport, scope of delivery, installation
12
Fig. 2: Removing the Transport Safeguard
•Remove the transport aid (TH).
•Unlock the grinding chamber door by pulling the mini detent pin (E) upwards
and pressing the handle of the door latch (F) backwards.
•Open the grinding chamber door (T).
•Remove the two locking screws (S).
NOTE
Keep the transport safeguard (TS) for transport at a later date.
3.6.2 Mounting the Feed Hopper
Fig. 3: Mounting the Feed Hopper
•Push the handle on the door latch (F) backwards.
•Open the grinding chamber door (T).
•Pull the plunger (B) into the upper latching position.
•Place the feed hopper (R) on the device. (see diagram)
CAUTION
Until the feed hopper (R) is secured by the two socket-head screws, there is a risk
of it falling out of the device.
•Release the detent pin bolt (D) on the plunger (B).
E
F
S
T
B
R
D
TH
E
F
TS
S
T

Transport, scope of delivery, installation
13
•Push the plunger downwards.
•Screw the two provided socket-head screws (S) through the hinge on the
feed hopper into the enclosure.
•At first, tighten the screws only slightly.
•Close the grinding chamber door.
•Pull the handle on the door catch (F) forwards until the mini detent pin (E)
engages.
•Adjust the feed hopper until the plunger can be moved upwards and
downwards easily without jamming.
•Tighten the two socket-head screws securely. (10Nm)
•Check again if the plunger moves upwards and downwards easily without
jamming.
•Put the two protective caps (SK) onto the screws (S).
Fig. 4: Putting on the Protective Caps
NOTE
When new, the grinding chamber door and the handle on the door latch are
somewhat difficult to move.
3.7 Installation of the machine
Installation height: maximum 2000 m above sea level
NOTE
Installation
–Depending on the operating status of the mill, there may be slight
vibrations.
•Place the mill on an even, flat and balanced supporting surface only.
The supporting surface must be stable and must not vibrate.
S

Transport, scope of delivery, installation
14
NOTICE
Installation of the machine
–It must be possible to disconnet the machine from the mains at any time.
•Install the machine such that the connection for the mains cable is
easily accessible.
3.8 Electrical connection
WARNING
When connecting the power cable to the mains supply, use an external fusethat
complies with the regulations applicable to the place of installation .
•Please check the type plate for details on the necessary voltage and
frequency for the device.
•Make sure the levels agree with the existing mains power supply.
•Use the supplied connection cable to connect the device to the mains power
supply.
NOTICE
Electrical connection
–Mechanical or electronic components may be damaged.
•Please observe the information on the type plate.
3.9 Type plate description
Fig. 5: Type plate lettering
1 Device designation
2 Year of production
3 Part number
4 Serial number
5 Manufacturer’s address
1
2
3
4
5
6
7
8
9
10
11
12
14
13

Transport, scope of delivery, installation
15
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 questions please provide the device designation (1) or the part
number (3) and the serial number (4) of the device.

Technical data
16
4 Technical data
4.1 Use of the machine for the intended purpose
Target group: Users, managing operators (owners)
Machine type designation: SM 300
The heavy-duty SM 300 cutting mill serves to grind flexible, hard-ductile and
fibrous products and product mixtures in batches or continuously. The SM 300 is
not designed for grinding wet or moist materials. The special shape of the cutting
tools in conjunction with the drive enable fast, efficient grinding without adversely
affecting the material being processed.
The following are the special characteristics
The new heavy-duty SM 300 cutting mill is convincing in difficult size reduction
tasks where other cutting mills fail. The high torque of the new 3 KW drive with
additional auxiliary flywheel mass allows a particularly effective preliminary size
reduction of heterogeneous material mixes, such as waste or electronic
components. Analytical fineness is usually attained in one step. The cutting mill is
used successfully for a great variety of other materials also, whereby the grinding
stock is warmed up only to a low degree during the grinding process so that the
mill is also suitable for grinding temperature-sensitive materials.
A further innovation is the cutting mill’s broad, freely selectable speed range from
700 to 3,000 rpm. The large selection of sieves, hoppers and collecting vessels
allow the mill to be adapted to individual tasks.
–fast, gradual size reduction by 18 cutting plates spaced in a helical pattern
along the circumference of the rotor
–parallel section rotor
–cutting tools which are made of high-quality materials and can be reused
over and over again
–high level of operating convenience due to central lock and operator panel
–consistent operational reliability in all user-relevant equipment components
–versatility in use due to variant designs and a large number of accessories
–powerful size reduction thanks to the 3-KW motor’s high torque
–perfect adaptation to the material being ground thanks to the variable speed
from 700 to 3,000 rpm
–optimised cutting effect due to the double-acting cutting bars
–very fast cleaning thanks to hinged enclosure with smooth surfaces and
push-fit rotor
–defined final fineness due to bottom sieves with aperture sizes 0.25 - 20 mm

Technical data
17
NOTICE
Area of use of the machine
–This machine is a laboratory machine designed for 8-hour single-shift
operation.
•This machine may not be used as a production machine nor is it
intended for continuous operation.
4.2 Emissions
CAUTION
Damage to hearing
The level of noise can be high depending on the type of material,
the knife used, the speed set and the duration of the grinding
process.
- Noise that is excessive in terms of level and duration can cause
impaired or permanently damaged hearing.
•Ensure suitable sound-proofing measures or wear
hearing protection.
Noise measurement according to DIN 45635-31-01-KL3.
Emissions at 1-m spacing:
approx. 66 dB (A) at idle speed
During size reduction depending on the sample:
approx. 75 to 92 dB (A) with peaks up to 98 dB (A)
4.3 Degree of protection
–IP20
4.4 Motor rotation speed
The motor speed is 300 - 700 rpm and it is steplessly adjustable.
4.5 Receptacle volume
The capacity is < 5 l.
4.6 Rated power
–200-240 V: 3000W, 16A
4.7 Dimensions and weight
When closed: (including base frame and standard hopper)
Height: 1691 mm
Width: 795 - 1090 mm
Depth: 765 mm
Weight: approx. 160 kg

Technical data
18
4.8 Required floor space
1090 mm x 765 mm - no safety spacing needed

Operating the machine
19
5 Operating the machine
5.1 Views of the Instrument
Fig. 6: Front view
G
A
F
C
H
B
H
K
H
J
H
I
D
E
T

Operating the machine
20
Fig. 7: Front view from the left (detail)
Fig. 8: Rear view
E
F
D
H
B
H
N
L
H
M
H
S
H