Operating Instruction s f o r C r os s -Beater Mill, Type S K 10 0
© Retsch GmbH 42781-Haan, Retsch-Allee 1-5, Germany, 4/5/2012 0002
Guide to Operating Instructions
The present operating instructions for
the SK 100 cross-beater mill give all the
necessary information for the areas
mentioned in the table of contents.
They give instructions to the target
group(s) defined for the respective areas on how to handle the SK 100 in a
safe and proper fashion. Knowledge of
the relevant chapters is, for the respective target group(s), a prerequisite for
safe and proper handling.
The present technical documentation is
a work of reference and a training
manual. Each of the individual chapters
is an independent unit.
These operating instructions do not include any repair instructions. In the
case of any necessary instructions,
please contact your supplier or Retsch
GmbH directly.
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Guide to Operating Instructions ....................................................... 2
Safety ................................................................................................. 4
Safety instructions ................................................................................................. 4
Warning signs ......................................................................................................... 5
Repairs ..................................................................................................................... 5
Confirmation .......................................................................................................... 5
Technical Data .................................................................................. 6
Application with proper use ................................................................................ 6
Drive ........................................................................................................................ 6
Speed ....................................................................................................................... 6
Rated power ........................................................................................................... 6
Feed grain size........................................................................................................ 7
Collecting vessel capacity ..................................................................................... 7
Noise emissions ..................................................................................................... 7
Noise data ............................................................................................................... 7
Type of protection ................................................................................................ 7
Unit dimensions ..................................................................................................... 7
Unit weights ............................................................................................................ 7
Required standing area ......................................................................................... 7
Dimensions sheet .............................................................................. 8
Transport and setting up ................................................................... 9
Packing .................................................................................................................... 9
Transport ................................................................................................................ 9
Temperature fluctuations ................................................................................ 9
Intermediate storage ......................................................................................... 9
Parameters for setting-up location ..................................................................... 9
Ambient temperature ........................................................................................ 9
Relative humidity ............................................................................................... 9
Setting-up altitude .............................................................................................. 10
Setting up with base frame ................................................................................... 10
Setting up on a laboratory table .......................................................................... 11
Electrical connection ............................................................................................ 11
Operation .......................................................................................... 12
Control elements and operation ......................................................................... 12
Graphic view of control elements: ..................................................................... 12
Control elements and their function .................................................................. 13
Overview Fig.4 ....................................................................................................... 13
Opening and closing of the mill housing .......................................................... 14
SK 100 standard ................................................................................................... 14
SK 100 comfort ..................................................................................................... 14
Insert bottom sieve ............................................................................................... 14
Filter hose and collecting vessel .......................................................................... 15
Feed material to be crushed ................................................................................ 15
Reset impact gap .................................................................................................... 16
Mounting a vibratory feeder ................................................................................ 16
Working instructions ......................................................................... 17
General .................................................................................................................... 17
End fineness ........................................................................................................... 17
The SK 100's mode of working .......................................................................... 17
General .............................................................................................. 18
Cleaning ................................................................................................................... 18
Servicing .................................................................................................................. 18
Necessary tests ....................................................................................................... 19
SK 100 standard ................................................................................................... 19
SK 100 comfort ..................................................................................................... 19
Accessories ............................................................................................................. 19
Changes ................................................................................................................... 19
Safety instructions (table) ..................................................................................... 20
Appendix .................................................................... following pages
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Safety
!
We exclude any claims for compensation for material damage and
personal injury caused by non-observance of the following safety instructions
Target group: All persons concerned with the
machine in any way.
The SK 100 is an ultra-modern, efficient product from Retsch
GmbH. It is state of the art. If the user handles machine in accordance with the material and is familiar with the present technical documentation, it is completely safe operationally.
Safety instructions
You, as the operator, must ensure that the persons instructed to
work with the SK 100:
* have noted and understood all the regulations for the safety area,
* know all instructions for action and regulations of the target
groups relevant to them before work is commenced,
* have access to the technical documentation at all times and with-
out problem,
* that new personnel is familiarised before commencement of work
on the SK 100 with the safe and proper handling either by a verbal introduction from a competent person and/or by means of
the present technical documentation.
* Improper operation can result in personal injury and damage to
property. You are responsible for your own safety and that of
your personnel.
* Ensure that no unauthorised persons have access to the SK
100.
For your own protection, make sure that you are given confirmation that your personnel have received instruction in use of
the SK 100. You will find a draft of a related form after the
chapter on safety.
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Warning signs
!
Personal injury
Material damage
The Retsch agency in your country
Your supplier
Retsch GmbH directly
_______________________________________________
_______________________________________________
_______________________________________________
_______________________________________________
_______________________________________________
We give warnings using the following
symbols:
Repairs
These operating instructions do not include any repair instructions. For your
own safety, repairs may only be carried
out by Retsch GmbH or an authorised
agent (service technicians).
Should the need arise, please notify:
Your service address:
Confirmation
I have noted the foreword and the safety
______________________________
_________
______________________________
_________
Service technician's signature
chapter.
Operator's signature
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Technical Data
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.
ashes
drugs
ores
animal feed
rocks
glass
resins
potassium
coal
coke
grains
artificial resins
minerals
pellets
salts
slags
bricks
bauxite
gypsum
pyrites
Machine type designation: SK 100
Application with proper use
SK 100 standard
For uses where primarily the same materials are to be ground in larger
quantities and it is not absolutely necessary to open the door after every
grinding operation to clean the grinding chamber.
SK 100 comfort
For uses where always different materials are to be ground and it is necessary to open the door after every grinding operation to clean the grinding
chamber.
This unit is not designed as a production machine, but as as laboratory device intended for 8 hours single shift operation.
Both types crush medium-hard to hard and brittle materials with a hardness of about 6 according to Mohs.
They are conceived especially for crushing the following materials:
and many other, similar materials.
The achievable end fineness depends on the hole width of the bottom
sieve and the grinding properties of the material to be ground. In favourable cases, finenesses of <100µm can be achieved.
For further information, our application laboratory is at your disposal.
Drive
SK100 standard
1 and 3 phase AC motor
SK100 comfort
1 and 3 phase AC motor with brake
Speed
2850min-1
Rated power
1100 Watt
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Feed grain size
Height approx.560
Width
approx.420
Depth
approx.445
with base frame
Height
approx.1183
Width
approx.560
Depth
approx.700
with base frame and DR 100
Height
approx.1443
Width
approx.560
Depth
approx.700
SK 100 standard
net approx. 32kg
with base frame
net approx. 54kg
with base frame and DR 100
net approx. 62kg
SK 100 comfort
net approx. 36kg
with base frame
net approx. 58kg
with base frame and DR 100
net approx. 66kg
max. 20mm
Collecting vessel capacity
5,000 ml or
30,000ml
Noise emissions
Noise measurement according to DIN 45635-31-01-KL3
Noise data are dependent on the fracturing properties fo the
product beeing ground.
Example:
Sound power level: LWA = 95 dB(A)
Workplace-related emission L
= 86 dB(A)
pAeq
Operating conditions:
Sample material: quartz, grain size < 3 mm
Filling ratio of grinding chamber: feeding quantity each until
motor rated power is reached.
Noise data
Workplace-related emission at a distance of 1 m:
72 to 80 dB(A) as a function of the material being ground
Type of protection
IP 54
Unit dimensions
Unit weights
Required standing area
700 mm x 560 mm; no safety distances necessary!)
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Dimensions sheet
0 I
with DR 100/75
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Transport and setting up
Please keep the packing for the whole of the guarantee period. If,
in the case of a complaint, the unit is returned in inadequate packing, your guarantee rights may be jeopardised.
Fig.1
Transport
Use the ring bolt H to transport the SK 100. Fig.1
The SK 100 may not be subjected to shocks, shaken or thrown
during transport. Otherwise the electrical and mechanical components may be damaged.
In the case of major temperature fluctuations (e.g. with transportation by air), the SK 100 must be protected against condensation.
Otherwise the electronic components may 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 groups: Operators, forwarders,
users
Packing
The packing is adjusted to the transport
route. It complies with the generally
applicable packing regulations.
Temperature fluctuations
Intermediate storage
Ensure that the SK 100 is also kept dry when
subject
to intermediate storage.
Parameters for setting-up location
Ambient temperature
The ambient temperature should be between 5°C and 40°C.
Relative humidity
Maximum relative humidity 80% at temperatures up to 31°C,
falling in linear fashion down to 50% relative humidity at 40°C
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Setting-up altitude
8
9
1
2
3
4
5
6
7
Fig.1
Fig.2
We recommend that the SK 100 be mounted on an base
frame which is available as accessory. Fig.1
Montage:
* Connect centre cross piece 9 and foot side parts 8 using
the cylinder-head screws 1
* Put covering caps 2 on the projecting thread
* Place stand tube 3 in the sleeve 4 and tighten fast with the
headless screws 5
* If necessary, the base frame can be aligned using the cylin-
der-head screws 6
To be able to fasten the base frame with screws, maximum
size 10 mm diam. possible, on the bottom, the two setting
screws 6 and the front plastic caps 7 must be removed.
* Place SK 100 on the base frame Fig. 3
* To fasten the hexagon screws SCH M8x35 supplied with
the base frame, use spring washers and hexagon nuts
max. 2000 m above seal level
Setting up with base frame
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Setting up on a laboratory table
Fig.3
You can mount the SK 100 on your laboratory table. Fig. 3
* Measure laboratory table thickness
* Use screws with a maximum diameter of 8mm and a
length of the laboratory table thickness + 25 mm
* Stand the SK 100 including collecting vessel on the
table
* Mark the holes for the SK 100 for the table with ref-
erence to the holes on the motor
The distance between the holes on the front edge of the table
must be such that the collecting vessel or filter hose can be
mounted and dismounted easily.
Electrical connection
* The voltage and frequency of the SK 100 can be found
on the nameplate.
* Ensure that the values agree with the power supply avail-
able.
* Connect the SK 100 to the power supply using the con-
necting cable supplied.
The power cable supplied does not have a plug because the
type of plug depends on the setting up location and the respective national regulation.
* When connecting the power cable to the power supply,
provide an external fuse in accordance with the regulations
of the setting-up location.
If the values are not observed, electronic and mechanical components may be damaged.
Before first use, the direction of rotation must be checked, see arrow
on motor.
If the direction of rotation is incorrect, the grinding will be insufficient and mechanical components may be damaged.
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Operation
0 I
0 I
Target group: Users
Control elements and operation
Graphic view of control elements:
Fig.4
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Control elements and their function
Item
Element
Symbol
Function
A
Power switch with
ON/OFF button
0 I
Isolates the SK 100 from and connects it with the power supply
I pressed = SK 100 is switched on
0 pressed = SK 100 is switched off
A1
Power switch with
knob
Isolates the SK 100 from and connects it with the power supply
ON = SK 100 is switched on
OFF = SK 100 is switched off
B
Door seal
cylinder-head screw
only with SK 100
standard
Opens and seals the door of the SK 100 standard, tensions the door
seal
clockwise = seals the door
anticlockwise = opens the door
Tool needed = Spanner C
B1
Door seal
handwheel only
with
SK 100 comfort
Opens and seals the door of the SK 100 comfort, tensions the door
seal
Pressed in and turned clockwise = seals the door
Pressed in and turned anticlockwise = opens the door
C
Key for door seal
B,
only with
SK 100 standard
Is needed to open and close the door seal with the cylinder head
screw on the SK 100 standard
D
Filling funnel at
door
Takes the material to be crushed with a maximum grain size of
20mm; does not serve to store material;
Reliably prevents material being crushed from flying out.
E
Filter hose
o. Fig.
Prevents build-up of the air pressure caused by rotating cross beater
and thus accelerates material throughput.
F
Collecting vessel 5l
o. Fig.
Takes crushed material.
G
Release lever for
motor brake only
with
SK 100 comfort
When pushed back, makes it possible to release the motor brake and
thereby allows manual turning of the cross beater for cleaning purposes.
H
Transport bolt
Prevents damage to mechanical and electrical components during
transport
I
Adjusting screws on
base frame
Make it possible to align the base frame on uneven floor
When screwed out, they expose the openings which permit fastening
of the base frame to the floor, Ø10mm
Overview Fig.4
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Opening and closing of the mill
0 I
Fig.5
0 I
Fig.6
SK 100 standard
Only open with the SK 100 disconnected, even if a limit switch
on the left hand side of the mill housing switches the SK 100 off
when the door is opened.
* Press the button O at the main switch A or turn to
OFF position Fig. 5
* Put key C in screw B
* When the key is turned in clockwise direction, the hous-
ing is opened
* Close in reverse order
SK 100 comfort
Only open with the SK100 disconnected.
* Press the button O at the main switch or turn to OFF
position Fig. 6
* Push handwheel B1 and turn in anti-clockwise direction
* Handwheel latches into end position
* Close in reverse order
Only close the door if the contact surfaces are absolutely free of material being crushed or other contaminants.
Mechanical components and the seal may be damaged.
!
Do not open the SK 100 with the motor running.
When crushing toxic or otherwise health-impairing materials, there is a
danger that health-hazardous particles may be inhaled.
!
Do not open the SK 100 and the motor brake simultaneously.
Danger of injury from unbraked cross beater.
Fig.7
Bottom sieves BS of stainless steel with Conidur or round holes
are available for selection as accessories. Fig. 7
Conidur 0.12/0.20/0.50/0.75/1.0/1.5/2.0mm
Round hole 3.0/4.0/5.0/6.0/8.0/10.0mm
* Stop SK 100
* Open mill housing
* Push in bottom sieve BS
* Close mill housing
Ensure that the collecting vessel has been mounted.
* Start the SK 100
housing
Insert bottom sieve
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Filter hose and collecting vessel
Fig.8
Fig.9
With the use of a fabric filter hose between the SK 100 and collecting vessel, the air stream arising due to the rotating cross
beater is taken off and this prevents a jam. Furthermore, it speeds
up the material throughput and ensures a gentle crushing process.
* Push filter hose E over the flange and at the same time
hold the clamping clip at an angle
* Clamp seal E1
* Hang in collecting vessel F
* Clamp seals F1
If the collecting vessel is mounted without filter hose, it must be
expected that dust will be emitted from the filling funnel D.
Feed material to be crushed
The maximum feed grain size should not exceed 20mm.
For batch or continuous operation, the SK 100 can be retrofitted
with a 30 l plastic container and a DR 100/75 vibratory feeder as
accessories.
* Feed material slowly into the filling funnel D Fig. 9
A rebound safety device fitted in the filling funnel prevents the
material being crushed from being thrown back.
Feed material slowly and continuously into the filling funnel.
An excessive feed quantity may force the SK 100 to come to a
standstill and mechanical components may be damaged.
!
During crushing, material in dust form may escape from the filling funnel. In the case of toxic and otherwise health-impairing materials, use an
extractor.
Danger if health-hazardous dust is inhaled.
!
Some materials form explosive mixtures.
Check the material properties of your crushing device.
Danger of explosion.
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Reset impact gap
Fig.10
From time to time the gap between the grinding insert and the impact
plates of the cross beater should be checked.
Fig. 10
* Pull out mains plug
* Open mill housing
* Check gap between the grinding insert ME and the impact plate PP
using a leaf gauge = required ~1 mm, the gap leading to the bottom sieve should not be <1 mm.
* If necessary reset impact plates using SW5
socket spanner
Fig.11 Fig.12 Fig.13
Fig.14
Prepare the DR 100/75 for feed operation in accordance with
your operating instructions.
Mounting :
* Screw out ring bolt H, Fig.11
* Screw in bolts BO, Fig.12
* Push on fixture HA with T screw, Fig.13
* Tighten T screw
* Mount and align DR 100/75
* Fasten with the two hexagon screws SC
M6x20 DIN933, Fig.13
* Plug power connection cable of the DR 100/75 in a socket
outlet with earthing contact
* You will find the voltage and frequency of the DR100/75 in-
dicated on the nameplate
If the values on the nameplate are not adhered to, electronic and mechanical components may be damaged.
Mounting a vibratory feeder
When feeding larger quantities, it is advisable in general to feed the
material to be crushed evenly using a feed device. This largely prevents any unnecessary load on the grinding tools and reduces possible friction heat. A suitable means of providing an even material
feed is the DR 100/75 vibratory feeder available as accessories.
Fig. 14
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Working instructions
Target group: Laboratory personnel
General
The SK 100 is a highly modern, efficient product from Retsch
GmbH.
Thanks to a large selection of accessories, the SK 100 is a unit with
versatile practical possibilities mainly in the chemical and ceramic
fields, in mining and in metallurgy, as well as in the preparation of
soil samples etc. in laboratories and in industry.
The SK 100 is mainly used for the precrushing and fine crushing of
medium-hard to hard and brittle materials to approx. 6 according to
Mohs.
End fineness
The achievable end fineness depends on the hole width of the bottom sieve and the crushing properties of the material. In favourable
cases, finenesses of < 100µm are possible.
The SK 100's mode of working
Crushing in the SK 100 cross beater mill takes place through beating, impact and shearing action.
Once the material as been fed into the feeding funnel, it passes into
the grinding chamber, where the crushing process takes place between the cross beater, the grinding insert and the bottom sieve.
As soon as the material being crushed has reached the relevant end
fineness, it passes through the bottom sieve and into the collecting
vessel.
With the use of a fabric filter hose between the SK 100 and the collecting vessel, any build-up of the air flow caused by the rotating
cross beater is prevented and the material throughput is partly accelerated.
This ensures a gentle crushing process.
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General
Fig.15
The SK 100 can be cleaned with normal brushes, paintbrushes
and possibly an industrial vacuum cleaner, as well as compressed
air.
To clean the grinding chamber of the SK 100 comfort the motor brake can be released at lever G ( Fig.15 ). The cross beater
can now be easily turned and this facilitates cleaning.
The type of protection for the SK 100 is IP54.
!
Do not clean SK 100 with flowing water.
Danger of fatal electric shock
Fig.10
From time to time the gap between the grinding insert and the
impact plates of the cross beater should be checked.
Fig.10
* Pull out mains plug
* Open mill housing
* Check gap between grinding insert ME and impact plate
PP using a leaf gauge = required 1mm
The split to the bottom sieve never < 1mm puts in.
* If necessary reset impact plates using a socket spanner SW5
Cleaning
Servicing
The SK 100 is largely maintenance-free.
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Necessary tests
Every six months the limit switches and the motor brake should be
checked with proper regard to.
SK 100 standard
Limit switch to the left on the door hinge
* With an opening gap of 3mm max. the limit switch must cause
the motor to cut out
SK 100 comfort
Limit switch to the left on the door hinge
* With an opening gap of 3mm max. the limit switch must cause
the motor to cut out
Limit switch to the right on quick-acting closure
* When the handwheel is turned a maximum of 45° the motor
brake must be activated.
Motor brake
* Start SK 100
* Stop SK 100
* Measure the braking time using a stopwatch
* Should the braking time exceed 0.5 seconds, contact the service technicians
Accessories
* Base frame
* Collecting vessel 30l
* Filter hose for 30l vessel
* Stand for DR 100/75 vibratory feeder
* DR 100/75 vibratory feeder
* Dirt collecting pan of plastic
* Conidur bottom sieve from 0.12 to 2.0mm
* Round hole bottom sieves 3.0 to 10mm
Copyright
It is not allowed to pass on or duplicate this documentation, to use or pass
on its content without the permission of Retsch GmbH. Any infringement
will be subject to compensation.
Changes
We reserve the right to make technical changes.
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Safety instructions (table)
for the SK 100 taken from the chapters
Procedure
Action
Dangers
Safety
Not paying attention to the safety instructions can
lead to damage to people and property.
Claims for damage are excluded in whatever form.
Packaging
Please retain the packaging for the duration of the
guarantee period.
In the case of complaint your warrantee rights can
be endangered if the item is returned insufficiently
packaged
Transport
During transportation the SK 100 should not be
knocked, shaken or thrown.
Electronic and mechanical components can become damaged.
Temperature variations
With severe variations in temperature, the SK 100
must be protected from condensation.
Electronic components can become damaged.
Scope of delivery
In the case of the delivery being incomplete
and/or transport damage, you must inform the
carrier and Retsch GmbH immediately (within 24
h).
Later complaints can under certain circumstances
no longer be considered.
Environmental temperature
Drops below 5°C
Rises above 40°C
Electronic and mechanical components can become damaged. Performance data change by an
unknown extent.
Air humidity
Rises above 80%
at temperatures up to 31%
Electronic and mechanical components can become damaged. Performance data change by an
unknown extent.
Electrical connection
Mains supply does not match the values given on
the type plate.
Electronic components can become damaged.
Before initial operation, the direction of rotation is
to be checked, see rotation direction arrow on the
motor
If the direction of rotation is wrong, no satisfactory milling will take place and mechanical components can become damaged.
Opening and closing of the mill's
casing
Only close the door when the contacting surfaces
are absolutely free of material for grinding or other
contamination.
Mechanical components and the sealing can become damaged.
Do not open the SK 100 when the motor is running.
When milling toxic or other materials harmful to
health, there is a danger of inhaling dust hazardous
to health.
Do not open the SK 100 and at the same time
bleed the motor brakes.
Danger of injury from the unbraked cross-beater.
Feeding of material for grinding
Feed the material for grinding slowly and continuously into the feed hopper.
A too great a rate of feeding can force the SK 100
into stopping and mechanical components can become damaged.
During milling, dust can rise from the material in
the feed hopper. With toxic or other materials
that are harmful to health, use a extractor appliance.
Danger of inhaling dust hazardous to health.
Some materials can form an explosive mixture
with air. Check the properties of the material you
wish to grind.
Danger of explosion.
Installation of a vibratory feeder
Pay attention to the details on the type plate.
If attention is not paid to the values on the type
plate, electronic and mechanical components can
become damaged.
Cleaning
Each time before cleaning, pull out the mains plug.
Danger of death by electrocution.
Do not clean with running water.
Danger of death by electrocution.
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Authorized person for the compilation of technical documents:
J. Bunke (technical documentation)
The following records are held by Retsch GmbH in the form of Technical Documentation:
Detailed records of engineering development, construction plans, study (analysis) of the measures required for
conformity assurance, analysis of the residual risks involved and operating instructions in due form according to
the approved regulations for preparation of user information data.
The CE-conformity of the Retsch Cross Beater Mill Type SK 100 is assured herewith.
In case of a modification to the machine not previously agreed with us as well as the use of not licensed spare parts and accessories this certificate will lose its validity.
Retsch GmbH Haan, January 2010
Dr. Stefan Mähler
Manager technical services
R e t s c h G m b H R e t s c h - A l l e e 1 - 5 4 2 7 8 1 H a a n G e r m a n y w w w . r e t s c h . c o m
CROSS BEATER MILL
SK 100
FB-EW-805-017 (E) Änderungsstand G 01.2012
CERTIFICATE OF CE-CONFORMITY
Translation
Certificate of CE-Conformity according to:
EC Mechanical Engineering Directive 2006/42/EC
Applied harmonized standards, in particular:
DIN EN ISO 12100 Security of machines
EC Directive Electromagnetic Compatibility 2004/108/EC
Applied standards, in particular:
DIN EN 50081 Generic standard interference emission - living areas - in conjunction with
EN 55022 and EN 60555
DIN EN 50082 Generic standard interference resistance - living areas
Additional applied standards, in particular
DIN EN 61010 Safety prescriptions concerning measuring-, operating-, controlling- and
laboratory equipment
Copyright
® Copyright by
Retsch GmbH
Haan, Retsch-Allee 1-5
D-42781 Haan
Federal Republic of Germany
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