Retsch SR 300 User Manual
Operating Instructions, Rotor-Beater Mill Model
SR 300
© Retsch GmbH 42781-Haan, Retsch-Allee 1-5, Germany, 2/8/2012 0002
Information on these operating instructions
The present operating instructions for the Model SR 300 rotorbeater mill provide all the necessary information on the topics
mentioned in the table of contents.
These instructions will guide the readers to the topics designated
for each target group, essential to safe use of the SR 300 in accordance with the purpose for which the unit is intended. Each
target group should be fully familiar with the relevant chapters,
as this is essential to safe and proper use of the equipment.
The present technical documentation has been designed for use
as both a reference source and learning guide. Each chapter
represents a self-contained unit.
These operating instructions do not contain any information on
repairs. If repairs should ever become necessary, kindly contact
your supplier or the Retsch company.
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Information on these operating instructions .................... 2
Safety ................................................................................. 4
Safety notes .................................................................................. 4
Warnings ...................................................................................... 5
Repairs .......................................................................................... 5
Confirmation ............................................................................... 5
Technical specifications ................................................... 6
Utilization in accordance with the intended purpose ........... 6
Drive ............................................................................................. 7
Motor rotation speed ................................................................. 7
Rotor-beater rotation speed ...................................................... 7
Rated power................................................................................. 7
Feed grain size ............................................................................. 7
Collection receptacle volumes .................................................. 7
Noise levels .................................................................................. 7
Safety class ................................................................................... 7
Equipment dimensions .............................................................. 7
Equipment weights..................................................................... 7
Footprint ...................................................................................... 7
Shipping and installation .................................................. 8
Packing ......................................................................................... 8
Shipping ....................................................................................... 8
Temperature fluctuations ................................................ 8
Intermediate storage ......................................................... 8
Requirements for the installation site ...................................... 8
Setting up the unit ...................................................................... 9
Electrical connection .................................................................. 9
Operation ........................................................................ 10
Operating elements and their use .......................................... 10
Schematic view of the operating elements: .................... 10
Survey of the operating controls ...................................... 11
Opening and closing the mill housing .................................. 12
Insert 360° sieve frame with ring sieve ................................. 12
Insert 180° grinding insert with frame and sieve insert ..... 13
Starting or stopping the SR 300 ............................................. 13
Filter bag and collection receptacle ....................................... 14
Feed the product to be pulverized ......................................... 14
Mounting a feeder unit ............................................................ 15
Instructions for use ......................................................... 16
General ....................................................................................... 16
Ultimate fineness ...................................................................... 16
Operating principle for the SR 300 ....................................... 16
General ............................................................................ 17
Cleaning ...................................................................................... 17
SR 300 .................................................................................. 17
Sieves, grinding inserts and rotors ............................. 17
Maintenance .............................................................................. 17
Required inspections ................................................................ 17
Accessories ................................................................................ 18
Copyright ................................................................................... 18
Modifications............................................................................. 18
Appendix .................................................. following pages
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Safety
!
We reject herewith any and all claims in conjunction with personal injury or property damage resulting from failure to observe the following safety instructions.
Target group: Everyone who deals with the machine in any
manner whatsoever.
The SR 300 is a modern, high-performance product manufactured by
the Retsch GmbH. It incorporates the latest technology. The SR 300 is
entirely safe in operation when used for the intended purpose and in
accordance with the present technical documentation.
Safety notes
You, as the owner/operator, must ensure that persons entrusted with
the operation of the SR 300:
have read and understood all the regulations included in the chap-
ter on safety,
have made themselves familiar, prior to starting work, with all the
operating instructions and regulations for the target groups relevant to them,
have complete, immediate and unhindered access to the technical
literature for this machine,
before commencing work, new personnel shall have been made
familiar with safe and appropriate use of the SR 300 before
starting work with the machine, through instruction by a qualified
person and/or with the help of the present technical documentation.
Incorrect operation can result in injuries to persons and damage to
property. You bear responsibility for your own safety and for that of
your coworkers.
Ensure that no unauthorized persons have access to the SR 300.
For your own protection, have your co-workers certify in writing the
fact that they have received instruction in the operation of the SR 300.
A suggestion for a printed form which can be used for this purpose will
be found at the end of the chapter on safety.
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Warnings
!
Personal injury
Property damage
Local Retsch representative
Your supplier
The Retsch GmbH
_______________________________________________
_______________________________________________
_______________________________________________
_______________________________________________
_______________________________________________
The following symbols are used to identify specific hazard
potentials:
Repairs
These operating instructions do not include any repair instructions. In
the interest of your own safety, have repairs made only by the Retsch
GmbH or an authorized representative (service technician).
In this case, please notify the following:
Your address for service:
Confirmation
I have familiarized myself with the foreword to the operating instruc-
tions and the chapter on safety.
_________________________________________________
Owner/operator signature
_______________________________________________
Service technician's signature
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Technical specifications
Do not make any modifications to the machine and use only RETSCH
approved spares and accessories.
Failure to comply will invalidate the CE declaration and guarantee.
Chemicals
Coal
Dolomite
Dried fruit
Dried vegetables
Fertilizers
Fly ash
Fodder
Grain
Kaolin
Lime
Peat, dried
Pellets
Pharmaceuticals
Plants
Plaster
Salts
Seed grain
Spices
Synthetic resins
Tobacco
Machine designation: SR 300
Utilization in accordance with the intended purpose
Suitable for applications in which differing product is to be ground and
changes in product are frequent and where it is necessary to open the
door after each cycle to clean the grinding chamber. The SR 300 is not
designed for use as a production machine but rather as a laboratory
unit, engineering for 8-hour.
The SR 300 pulverizes dry, soft to medium-hard materials at hardness
of up to about 4 on the Mohs scale.
It is suitable in particular for pulverizing the materials listed below:
and for many other materials with similar fracture properties.
The ultimate fineness which can be achieved is dependent on the geometry of the sieve openings and the fracture properties of the product
being processed. In the most favorable cases fineness of < 60 µm can
be achieved.
Our applications laboratory is always at your service to provide additional information.
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Drive
Height appr. 1183
Width appr. 560
Depth appr. 831
With DR 100
Height appr. 1443
Width appr. 560
Depth appr. 831
without DR 100/75
approx. 95 kg net
with DR 100/75
approx. 103 kg net
3-phase motor with brakes
Motor rotation speed
2870 r.p.m. at 50 Hz
3440 r.p.m. at 60 Hz
Rotor-beater rotation speed
approx. 8100 r.p.m. at 50 Hz
approx. 9700 r.p.m. at 60 Hz
Rated power
2200 Watts
Feed grain size
max. 15 mm
When feeding individual items, feed grain size may also be up to
20 mm
Collection receptacle volumes
5.000 ml or
30.000 ml
Noise levels
Noise measurement as per DIN 45635-31-01, Class 3
The noise values will also be influenced by the nature of the product
being ground.
Example:
Noise level LWA = 101 dB(A)
Emission value for worksite L
Operating parameters:
Feed product: Artificial fertilizer, grain size < 3 mm
= 91 dB(A)
pEq
Safety class
IP 54
Equipment dimensions
Equipment weights
Footprint
831 mm x 560 mm; no safety clearances are required!
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Shipping and installation
Please retain the packaging for the duration of the guarantee period
since, in case a claim arises, your guarantee entitlements will be jeopardized if the unit is returned in unsuitable packaging.
Fig. 1
Shipping
Use the eye bold H whenever you are moving the SR 300. Fig. 1
The SR 300 may not be subjected to impact or vibration during transportation; it must not be thrown. The electronic and mechanical components could otherwise be damaged.
In case of wide temperature fluctuations (during shipment by air, for
instance) the SR 300 will have to be protected against condensation;
the electronic components could otherwise be damaged.
When the ambient temperature exceeds or falls below that specified,
the electronic and mechanical components may be damaged, and performance data changed to an unknown extent.
At higher humidity, the electronic and mechanical components may
be damaged, and performance data changed to an unknown extent.
Target group: Owners, freight forwarders, operators
Packing
The type of packaging used has been selected in accordance with the
shipping mode. It complies with generally accepted packaging guidelines.
Temperature fluctuations
Intermediate storage
Ensure that the SR 300 is also kept in a dry place during intermediate storage.
Requirements for the installation site
Ambient temperature
The ambient temperature should be between 5°C and 40°C.
Humidity
Maximum relative humidity 80% at temperatures up to 31°C;
linear decline down to 50% relative humidity at 40°C.
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