Retsch BB 50 User Manual

Manual

Jaw Crusher BB50

Translation

© Retsch GmbH, 42781 Haan, Retsch-Allee 1-5, Germany 10.02.2014 0001

Copyright

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

2

3

1 Notes on the Operating Manual ............................................................................................................ 6

1.1 Explanations of the safety warnings .................................................................................................. 7

1.2 General safety instructions ................................................................................................................ 8

1.3 Repairs ............................................................................................................................................... 9

2 Confirmation ......................................................................................................................................... 10

3 Technical data ....................................................................................................................................... 11

3.1 Use of the machine for the intended purpose.................................................................................. 11

3.1.1 Properties of the grinding material ............................................................................................... 11

3.2 Working instructions ........................................................................................................................ 12

3.3 Protective equipment ....................................................................................................................... 13

3.4 Emissions......................................................................................................................................... 13

3.5 Degree of protection ........................................................................................................................ 13

3.6 Motor rotation speed ........................................................................................................................ 13

3.7 Receptacle volume .......................................................................................................................... 13

3.8 Feed size ......................................................................................................................................... 13

3.9 Rated power .................................................................................................................................... 13

3.10 Dimensions and weight .................................................................................................................... 14

3.11 Required floor space ........................................................................................................................ 14

4 Transport, scope of delivery, installation .......................................................................................... 15

4.1 Packaging ........................................................................................................................................ 15

4.2 Transport.......................................................................................................................................... 15

4.3 Temperature fluctuations and condensed water ............................................................................. 15

4.4 Conditions for the place of installation ............................................................................................. 15

4.5 Electrical connection ........................................................................................................................ 16

4.6 Type plate description ...................................................................................................................... 16

4.7 Removing Transport Saf eg uards ..................................................................................................... 17

4.8 Removing the transport safeguard .................................................................................................. 18

4.9 Installation of the machine ............................................................................................................... 18

5 Operating the machine ........................................................................................................................ 19

5.1 Views of the Instrument ................................................................................................................... 19

5.2 Overview table of the parts of the device ........................................................................................ 21

5.3 Operating elements and displays .................................................................................................... 22

5.4 Overview Table of the Operating Elements and the Display ........................................................... 22

5.5 Switching On and Off ....................................................................................................................... 23

5.6 Setting the gap width to zero position .............................................................................................. 23

5.7 Setting the gap width ....................................................................................................................... 24

5.8 Reverse grinding .............................................................................................................................. 25

5.9 Setting the Speed ............................................................................................................................ 25

5.10 Starting the grinding process ........................................................................................................... 26

5.11 Stopping the grinding process ......................................................................................................... 26

5.12 Sample receptacle ........................................................................................................................... 27

6 Safety functions and fault display ...................................................................................................... 27

6.1 Fault messages ............................................................................................................................... 27

7 Cleaning, wear and service ................................................................................................................. 28

7.1 Cleaning ........................................................................................................................................... 28

7.1.1 Removing the feed hopper .......................................................................................................... 28

4

7.1.2 Removing the splash-back protection ......................................................................................... 29

7.1.3 Removing the grinding chamber cover ........................................................................................ 29

7.2 Service ............................................................................................................................................. 29

7.2.1 Replacing the breaking jaws ........................................................................................................ 29

7.2.2 Replacing the front breaking jaw ................................................................................................. 30

7.3 Wear ................................................................................................................................................ 33

7.3.1 Resetting the wear alert ............................................................................................................... 33

7.3.1.1 Setting the operating time until the calibration alert is displayed ......................................... 33

8 Disposal ................................................................................................................................................. 35

9 Index – Verzeichnis .............................................................................................................................. 36

Anhang .................................................................................................................................... folgende Seiten

5

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1 0BNotes on the Operating Manual

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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

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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.

6

WARNING

Type of danger / personal injury

CAUTION

Type of danger / personal injury

CAUTION

NOTICE

Nature of the property damage

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1.1 9BExplanations of the safety warnings

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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.

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.

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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:

In the event of possible property damage we inform you with the word
“Instructions” and the corresponding content.

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

7

CAUTION

Read the Operating Manual

CAUTION

Changes to the machine

NOTICE

Changes to the machine

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1.2 10BGeneral safety instructions

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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.

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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

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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.

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8

– 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.

– The conformity declared by Retsch with the European Directi ves w ill 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.

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Reperaturen

1.3 11BRepairs

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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 repr es e ntative in your country

Your supplier

Retsch GmbH directly

Your Service Address:

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Bestätigung

2 1BConfirmation

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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

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10

NOTICE

Area of use of the machine

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3 2BTechnical data

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3.1 12BUse of the machine for the intended purpose

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Target group: Operating company, operator

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Name of machine model: BB 50
The jaw crusher has been specially developed for sample preparation in the

laboratory.
It is used for the fast and gentle grinding and pre-crushing of medium-hard, hard,

brittle and tough materials.
The final fineness that can be achieved can be up to 0.5 mm or below depending

on the feed material.
The maximum feed size is 40 mm.
Materials that can be ground in the BB 50 include the following:

3.1.1

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48BProperties of the grinding material

Bakelite
Bauxite
Basalt
Concrete building

materials
Dolomite
Ores
Feld spar
Granite

Glass
Limestone
Ceramic
Gravel
Boneblack
Coke
Corundum
Alloys
Oxide ceramic minerals

Quartz
Salts
Fireclay
Slag
Silicate
Silicon
Sintered material
Stones
Cement clinker

Rubblestone

In principle every hard and brittle grinding material with hardness grade >3
according to the Mohs scale can be ground using this machine.

Damp, greasy grinding material and grinding material with a hardness grade <3
according to Mohs tends to compact or cake in the crushing chamber under the
applied pressure. Grinding these products by fracturing and applying pressure is
not possible.

Small sample quantities are ground gently and without loss. This machine is
available with a grinding chamber made from ceramic materials for heavy metal­free grinding. The digital grinding gap display and the zero point alignment of the
machine enable reproducible grinding results.

– 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.

11

2BTechnical data

T

TA

D

RB

SB

E

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Arbeitsweise

3.2 13BWorking instructions

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Fig. 1: Diagram of grinding
The grinding process in this machine takes place using pressure.
The grinding chamber (T) is funnel-shaped and narrows to the outlet opening (TA)

depending on the set gap width.
The gap width setting is infinitely adjustable.
The machine has a stationary crusher arm (RB) connected to the gap width

adjustment (D) and a mobile crusher arm (SB). Replaceable breaking jaws are
attached to both crusher arms, between which the grinding takes place by means
of pressure.

The eccentric movement of the actuated crusher arm (550...950/min) produces a
constant conveying of the grinding material until the final fineness has been
achieved that enables it to pass through the set gap (TA). It is then collected in a
removable collecting receptacle (E).

The convex shape of the replaceable breaking jaws made from different materials
ensures the best possible fine grinding and at the same time prevents material
compaction and a bridging effect.

12

2BTechnical data

ES

BS A B

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3.3 14BProtective equipment

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Fig. 2: Protective devices
The machine is equipped with the following protective devices:

A: Splash-back protection
B: Fill hopper
BS: Switch for fill hopper

ES: Switch for drawer

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3.4 15BEmissions

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Noise measurement
During grinding depending on the sample material:
– approx. 86,1 dB (A) without sample (speed 950 rpm)

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– approx. 88,6 dB (A) with marble break (speed 650 rpm)

3.5 16BDegree of protection

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– IP20

3.6 17BMotor rotation speed

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The motor speed is 550...950min

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550 - 600 - 650 - 700 - 750 - 800 - 850 - 900 - 950min

3.7 18BReceptacle volume

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The collection volume is < 3 l.

Prevents sample ejection
Protects against reaching inside the machine
Checks position of the fill hopper and switches the

drive off
Checks drawer position

-1

and can be adjusted in increments of 50.

-1

3.8 19BFeed size

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3.9 20BRated power

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The maximum feed size is 40mm.

– 200-240 V: 1150W, 2 x 8A

13