Retsch BB200 User manual

Retsch GmbH, Retsch-Allee 1-5, 42781 Haan, Germany 5/4/2012 0004
O p e r a t i n g I n s t r u c t i o n s
B B 2 0 0 J a w C r u s h e r

04/05/2012 Retsch GmbH 2
Information on these operating instructions
The present operating instructions for the Model BB 200 jaw
crusher provides all the required information on the topics
mentioned in the table of contents.
These guidelines are provided for the use of the groups
specified in each chapter and will ensure safe operation of the
BB 200, for the purpose for which it was intended. Familiarity
with the pertinent chapters is a prerequisite for confident,
proper utilization by the various persons who deal with the
machine.
The present technical manual is designed for use both as a
reference work and as a learning guide. Each of the individual
chapters is a self-contained unit.
These operating instructions do not contain any information on
repairs. If repairs should ever become necessary, kindly get in
touch with your supplier or contact directly the Retsch GmbH.

04/05/2012 Retsch GmbH 3
Information on these operating instructions ........................................2
Safety .....................................................................................................4
Safety note ...........................................................................................................4
Warnings ..............................................................................................................5
Repairs..................................................................................................................5
Confirmation.......................................................................................................5
Technical specifications .......................................................................6
Utilization in accordance with the intended purpose...................................6
Gap width adjustment range.............................................................................6
Throughput rate and ultimate fineness...........................................................6
Receiver drawer volume....................................................................................6
Noise emissions ..................................................................................................6
Electrical protection class..................................................................................6
Rated power.........................................................................................................6
Noise emissions ..................................................................................................7
Equipment dimensions (approximate)............................................................7
Footprint..............................................................................................................7
Shipping and installation ......................................................................8
Packing .................................................................................................................8
Shipping ...............................................................................................................8
Intermediate storage...........................................................................................8
Intermediate storage...........................................................................................8
Requirements for the installation site..............................................................8
Installation ...........................................................................................................9
Electrical connection..........................................................................................9
Operation ............................................................................................ 10
Control elements and their use ......................................................................10
Schematic view of the operating controls , part 1:..........................10
Control elements and their use ......................................................................11
Schematic view of the operating controls, part 2:...........................11
The operating controls and their functions .................................................12
Summary table.......................................................................................12
Starting the BB 200 ..........................................................................................13
Stopping the BB 200........................................................................................13
Emptying the receiver drawer ........................................................................13
Adjust the gap width........................................................................................14
Adjusting the zero setting for the gap width ...............................................14
Fill product to be ground................................................................................14
Working instructions........................................................................... 15
General...............................................................................................................15
Grain size of feedstock product.....................................................................15
Properties of the product being ground .......................................................15
Fill volume.........................................................................................................15
General ................................................................................................ 16
Cleaning..............................................................................................................16
Maintenance ......................................................................................................17
Functional inspections.....................................................................................17
Replacing the breaker jaws..............................................................................18
Copyright ...........................................................................................................18
Modifications.....................................................................................................18
Safety instructions (table)................................................................................19
Appendix ......................................................................following pages

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Safety
Target group: Anyone who deals with the machine in any
capacity whatsoever.
The BB 200 is a modern, high-performance product
manufactured by the Retsch GmbH, incorporating engineering
representing the state of the art. It is entirely safe in operation,
provided that the operator is familiar with the present technical
manual and uses the machine for the purpose for which it was
intended.
Safety note
You as the owner/operator must ensure that the persons
entrusted with the use of the BB 200:
* have read and understand all the regulations given in the
section dealing with safety,
* have made themselves familiar with all the operating
instructions and rules for the particular target group, prior to
commencing any work,
* have complete, immediate and unrestricted access to the
technical manuals for this machine.
* New personnel shall have been familiarized with the safe and
correct use of the BB 200, prior to beginning the work, by
way of instruction given by a qualified person and/or on the
basis of the present technical documentation.
* Incorrect operation can result in personal injury and property
damage. You are responsible for your own safety and for that
of your employees.
* Ensure that no unauthorized persons have access to the BB
200.
For your own protection, have your coworkers certify in writing
the fact that they have received instruction in the operation of
the BB 200. A suggestion for a printed form which can be used
for this purpose will be found at the end of the chapter on
safety.
!
We reject herewith any and all claims in conjunction with per-
sonal injury or property damage resulting from failure to ob-
serve the following safety instructions.

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Warnings
The following symbols are used to identify specific hazard po-
tentials:
!
Personal injury
Property damage
Repairs
These operating instructions do not include any repair instruc-
tions. 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:
Local Retsch representative
Your supplier
The Retsch GmbH
Your address for service:
____________________________
____________________________
____________________________
____________________________
Confirmation
I have familiarized myself with the foreword to the operating in-
structions and the chapter on safety.
_______________________________________
Owner/operator signature
_______________________________________
Service technician's signature

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Technical specifications
Machine designation: BB 200
Utilization in accordance with the intended purpose
The BB 200 is suitable for reducing medium-hard to very-hard
substances as well as for brittle and tough materials.
The ultimate fineness can be as little as 2 mm and, depending on
the material being processed, may be even less.
The following is a list of some of the materials which can be
ground using the BB 200:
Bakelite // bauxite // concrete // dolomite // ores // feldspar
// granite // graywacke // glass // limestone // gravel // coal
// coke // corundum // quartz // salts // refractory clay //
slag // silicates // silicon // sintered materials // cement
clinker, etc.
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.
Gap width adjustment range
From 0 to about 30 mm using a threaded spindle
Throughput rate and ultimate fineness
The performance data, through-put rate and attainable ultimate
fineness are dependent on the fracturing properties and the
hardness of the product being ground. These values can only be
determined empirically.
Receiver drawer volume
approx. 5 dm3
Noise emissions
Noise level at a distance of 1m:
approx. 63 dB (A) when idling
The noise level can rise depending on the product being
processed.
Electrical protection class
IP54
Rated power
1500 Watt

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Noise emissions
Noise measurements according to DIN 45635-31-01-KL3
Characteristic noise values are dependent on the fracturing properties of
the product beeing ground.
Examples:
Workplace-related emission value LpAeq = 84 dB(A)
Operating conditions:
Sample material: marble, grain size 40 - 80 mm
Adjusted gap width: < 1 mm
Final grain size: < 5 mm
Filling ratio of grinding chamber: approx. 65 %
or
Sound power level LWA = 101 db(A)
Workplace-related emission value LpAeq = 92 dB(A)
Operating conditions:
Sample material: marble, grain size 40 - 80 mm
Adjusted gap width: < 1 mm
Final grain size: < 5 mm
Filling ratio of grinding chamber: approx. 65 %
!
Damage to hearing
The level of noise can be high depending on the type of
material 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.
Equipment dimensions (approximate)
Height: 1160 mm
Width: 450 mm
Depth: 900 mm
Weight: 300 kg net
Footprint
450 mm x 900 mm; no safety clearances required!

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Shipping and installation
Packing
The type of packaging used has been selected in accordance with
the shipping mode. It complies with generally accepted
packaging guidelines.
Please retain the packaging for the duration of the
guarantee since, in case of a claim, returning in unsuitable
packaging can jeopardize your guarantee entitlements.
Shipping
The BB 200 shall not be subjected to impact or vibration
during transportation; it shall not be thrown. The
electronic and mechanical components could otherwise be
damaged.
Abb.1
In order to be able to transport the BB 200 with a crane
(capable of lifting at least 500 kg), it should be fixed with
ties as in figure 1.
Intermediate storage
Please pay attention to the fact that the BB 200 must also
be kept dry when in intermediate storage.
Temperature fluctuations
In case of wide temperature fluctuations (during shipment
by air, for instance) the BB 200 will have to be protected
against condensation; the electronic components could
otherwise be damaged.
Intermediate storage
Also ensure that the BB 200 is stored in a dry place.
Requirements for the installation site
Ambient temperature:
5°C to 40°C
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.
Humidity:
Maximum relative humidity 80% at temperatures up to 31°C;
linear decline down to 50% relative humidity at 40°C.
At higher humidity, the electronic and mechanical
components may be damaged, and performance data
changed to an unknown extent.
Installation site –altitude
max. 2000 m above mean sea level

04/05/2012 Retsch GmbH 9
Fig. 1
Installation
Set up the BB 200 only a flat and solid surface. Anchoring is not
absolutely necessary since the vibrations transmitted to the
environment by the free mass moments will be only barely
perceptible. The machine may, if desired, be anchored using the
holes in the feet as shown in Fig.1.
Electrical connection
* Refer to the data plate for information on the voltage and
frequency at which the BB 200 is to be operated.
* Ensure that the values shown there correspond to those for the
local power supply.
* Use the supplied power cord to connect the BB 200 to the
power supply.
* When connecting the power cord to the power source, be sure
that the supply circuit is fused in accordance with local codes.
Failure to observe the values on the data plate can
cause damage to either the electrical or the mechanical
components or both.

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Operation
Target group: Operators
Control elements and their use
Schematic view of the operating controls , part 1:
Side view

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Control elements and their use
Schematic view of the operating controls, part 2:
Front view

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The operating controls and their functions
Summary table
Element
Description
Function
A
ON/OFF switch and motor protection
switch
Starts and stops the jaw crusher drive; isolates the motor
from the power supply in case of overloading
B
Fill hopper
Provides for the feed of material; prevents unintentionally
reaching into the grinding chamber; prevents ejection of
the material being processed
C
Receiver drawer V = 5 dm3
Accepts the ground sample material
D
Hand barrier
Prevents unintentionally reaching into the grinding
chamber
E
Hex-head bolt
Affixes the hand barrier
F
Two machine screws
The fill hopper B can be swung to the rear once these
screws have been removed.
G
Limit switch
Disables the drive (motor) when the fill hopper Bis not in
its normal operating position
H
Clamping shim
Secures the breaker jaws J on the breaker arms S and T.
I
Machine screw
Secure the clamping shim H
J
Breaker jaws
The size reduction components proper
K
Pointer
Indicates at scale M the width of the gap, at a tolerance of
±1mm
M
Scale
Indicates, in conjunction with the pointer K, the width of
the gap; used to zero the gap width adjustment to
accommodate for breaker jaw wear.
N
Lock nut
Locks the threaded spindle O
O
Threaded spindle
Increases the gap width when turned to the left, decreases
when turned to the right
P
Screw eyes
Lifting points when using lifting tackle to move the device
Q
Pin
When the pointer K is removed and the fill hopper B
swung to the rear, the pin can be pulled out and the
breaker arm S removed.
R
Wearing plate
Prevents damage to the side panels
S
Breaker arm, stationary
The breaker jaw J is mounted here; the gap width can be
modified by adjusting the threaded spindle O.
T
Breaker arm, moving
The breaker jaw Jis mounted here; executes the grinding
motion required for size reduction without manual effort

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Starting the BB 200
The BB 200 may be started only in the idling mode, i.e.
without product in the hopper or grinding chamber.
The presence of product before starting will cause the machine
to block and can cause damage to mechanical components.
0 I
The ON/OFF and motor protection switch A/A1 is located
on the left, at the front of the machine, at the left. Fig.2
* Press the button I.
The motor starts and the movable arm is set in motion.
The grinding operation can now be started, once the feed
hopper is in place.
Fig. 2
Stopping the BB 200
The ON/OFF and motor protection switch Ais located on
the left, at the front of the machine Fig.2
* Press the button 0
The motor is separated from the power supply and the
movable breaker arm comes to a stop.
Stop the BB 200 only when all the grinding chamber has been
cleared of product.
Mechanical components could be damaged by blockage.
Emptying the receiver drawer
Since the volume fed through the hopper can be greater than
the capacity of the drawer (V=5 dm3), it will be necessary to
empty the drawer C from time to time.
To achieve the maximum fill level in the drawer, it is necessary
to shake it back and forth occasionally, without displacing the
drawer by more than 30 mm.
Fig. 3
Fig. 3

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Adjust the gap width
Fig. 4
* Start the BB 200 (idling, without product).
* Loosen the lock nut N(turn to the left).
* Turn the spindle Oto the right to reduce the gap.
* Turn the spindle O to the left to enlarge the gap.
* The pointer K shows the approximate gap width at the scale
M.
* Re-tighten the lock nut N(turn to the right).
Fig. 4
Adjusting the zero setting for the gap width
* Start the BB 200 (idling, without product).
* Loosen the lock nut N (turn to the left).
* Turn the spindle O to the right until you hear the two
breaker arms make contact.
* Loosen the machine screws U (turn to the right).
* Slide the 0mark at the scale M to align with the tip of the
pointer K.
* Re-tighten the machine screws (turn to the right).
Fig. 4
Fill product to be ground
The fill hopper B can accept product up to grain sizes of 90
mm.
This hopper is not intended, however, to store a reserve of
product; its function is exclusively to feed material to the
grinding chamber and to keep ground product from being
ejected.
Fig. 5
Fig. 5
If the grinding chamber Wis filled more than 2/3 full, then the
guide plates of the fill hopper could be damaged; the moving
breaker arm would force the product into the crusher housing,
behind the breaker arm.

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Working instructions
Target group: Laboratory technicians
General
The BB 200 is a rugged, floor-mounted unit which is used
primarily for preliminary grinding in preparation for final size
reduction.
Its continuous operating concept also makes the BB 200
suitable for integration into fully automatic and semi-automatic
processing lines.
The performance data, throughput rates and ultimate fineness
which can be reached will depend on the breaking properties
and hardness of the product and on the gap width which is
selected.
Grain size of feedstock product
The maximum grain size is determined by the size of the fill
hopper opening and in the BB 200 is a maximum of 90 mm.
Properties of the product being ground
Every hard and brittle product, exhibiting a hardness of greater
than 3 on the Mohs scale, can as a rule be reduced with the BB
200.
Wet and oily product and that with a hardness index below 3
(Mohs scale) tend to be compressed and clump in the grinding
chamber, this being due to the pressure exerted by the breaker
jaws. It is for this reason that pre-grinding such material is
hardly possible.
Fill volume
If the grinding chamber Wis filled more than 2/3=800ml full,
then the guide plates of the fill hopper could be damaged and the
moving breaker would force the product into the crusher
housing, behind the breaker arm. Fig. 6
The fill level will also influence the proportion of fine material in
the product or specimen after preliminary grinding; the fuller the
grinding chamber, the greater the share of fines.
Fig. 6
If the grinding chamber Wis filled more than 2/3=800ml full,
then the fill hopper guide plates could be damaged; the moving
breaker arm would force product into the crusher housing,
behind the breaker arm.

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General
Cleaning
An industrial vacuum cleaner and a stable, long-handled brush
are best suited for cleaning the BB 200.
The stationary breaker arm Scan also be removed to allow for
sufficient cleaning of the grinding chamber. See Fig. 7
* Unscrew the machine screws F.
* Swing back the fill hopper B.
* Grasp the breaker arm S at the grip and pull out the pin
Q.
* Lift out the breaker arm S.
The grinding chamber is now accessible.
Assemble in reverse order.
Fig. 7
!
The fill hopper may be swung back (by unscrewing the two
machine screws) only by trained personnel and only for
cleaning purposes. Operating the BB 200 without these
machine screws in place and tightened down properly is
absolutely prohibited.
Hazard of pinching fingers and hands!
!
Do not use running water to clean the BB 200.
Hazard of fatal electrical shock.
Using solvents is prohibited since the felt seals at the sides of
the breaker arms could be damaged and/or grease packings
could be washed out.

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Maintenance
CE
Fig. 8
The BB 200 is to be lubricated from time to time. Fig. 8
Kindly refer to the table below for the quantities of grease and
the lubrication intervals.
The lubrication points are marked with red dots on the unit.
No. Quan. in kg Interval, hours of operation
1 0.008 50
2 0.008 50
The points not shown in Fig. 8 but indicated with arrows are
permanently lubricated.
Use the grease gun supplied with the BB 200 for lubrication
purposes.
Ordinary multi-purpose graese can be used as lubricant, e.g. EP
4685 by ESSO / SHELL or BP.
Functional inspections
The limit switch at the fill hopper is to be checked semiannually
for proper functioning. Fig. 9
* Open the toggle clamp F on the filling hopper B.
* Pull back the filling hopper.
* The BB 200 stops completely.
* Pull down and close the filling hopper B.
The BB 200 must not start up again.
* Close the toggle clamp F on the filling hopper B.
* Start the BB 200.
Fig. 9
B
F

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Replacing the breaker jaws
Fig. 10
The stationary breaker arm Scan be removed to provide
sufficient space for dismantling the machine. Fig. 10
* Unscrew the machine screws F.
* Swing back the fill hopper B.
* Grasp the breaker arm S at the grip and pull out the pin
Q.
* Lift out the breaker arm S.
* Unscrew the machine screws I.
* Remove the clamping shims H.
* Replace the breaker jaws J.
* Assemble in reverse order.
* Set the gap width as described in this instruction manual.
!
The fill hopper may be swung back (by unscrewing the two
machine screws) only by trained personnel and only for
cleaning purposes. Operating the BB 200 without these
machine screws in place and tightened down properly is
absolutely prohibited.
Hazard of pinching fingers and hands!
Copyright
Reproducing or distributing this documentation, utilizing or
distributing the contents is permitted only with the express
consent of Retsch GmbH.
Non-compliance will subject violators to claims for damages.
Modifications
Subject to modification without prior notice.

04/05/2012 Retsch GmbH 19
Safety instructions (table)
for the BB 200 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 BB 200 should not be
knocked, shaken or thrown.
Electronic and mechanical components can
become damaged.
Temperature variations
With severe variations in temperature, the BB
200 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.
Operation
During starting, stopping and disconnection,
there must be no material for grinding in the
crushing chamber or in the feed hopper.
Mechanical components can possibly become
damaged via a blockage.
The crushing chamber is not be filled by more
than 2/3.
Otherwise the guide plates of the feed hopper can
becoming damaged and the material for grinding
will be delivered by the breaking arm into the
crusher housing behind the arm.
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.
Solvents are not permitted.
Since they would damage the felt seals on the side
of the breaking arms or wash out the grease filling.
The filling hopper may be swung back for
cleaning, by unscrewing the two socket screws,
only by assigned, trained personnel. Operation
of the BB 200 without screwed-in socket screws
and without the filling hopper is not permitted.
Danger of crushing for fingers and hands.