Fritsch Vibratory Feeder LABORETTE 24 Operating instructions

Brand: Fritsch

Model: Vibratory Feeder LABORETTE 24

Type: Operating instructions

LABORETTE 24

VIBRATORY FEEDER

Operating Manual

Translation of the original

FRITSCH Vibratory Feeder

LABORETTE 24

Fritsch GmbH

Manufacturers of Laboratory Instruments

Industriestraße 8

D - 55743 Idar-Oberstein - Germany

Phone: +49 (0)6784/ 70-0

Telefax: +49 (0)6784/ 70-11

E-Mail: [email protected]

Internet: http://www.FRITSCH.de

Fritsch GmbH, Laboratory Machines was awarded certification on

21 November 2003 by the TÜV-Zertifizierungsgemeinschaft e.V.

Proof of fulfilment of the requirements of DIN EN ISO 9001:2000

by Fritsch GmbH was given by means of an audit.

The enclosed attestation of conformity outlines the standards

which the vibratory feeder "laborette 24" fulfils in order to carry the

CE symbol.

Instrument number 24.00xx.00

Valid from serial number 1400

Edition 12/2003 Index 001 checked and released

LABORETTE 24

Table of contents

Page

1 General / Introduction..............................................................1

1.1 Operating manual instructions..............................................................1

1.2 Explanation of the symbols used on the machine and...........................

in the operating manual........................................................................1

1.3 Short description of the machine..........................................................2

1.3.1 Areas of application .........................................................................................2

1.3.2 Operating procedure........................................................................................2

1.4 Technical data ......................................................................................3

2 Operational safety....................................................................4

2.1 General safety instructions...................................................................4

2.2 Operating personnel.............................................................................4

3 Installation................................................................................5

3.1 Unpacking.............................................................................................5

3.2 Transportation ......................................................................................5

3.3 Setting up..............................................................................................5

3.4 Ambient requirements ..........................................................................5

3.5 Electrical connection.............................................................................6

3.5.1 Check for Agreement of Voltage and Current..................................................6

3.5.2 Interface...........................................................................................................6

3.5.3 Activating the Feeder.......................................................................................6

4 Working with the mill...............................................................7

4.1 Material Feed........................................................................................7

4.2 Feeding via the Standard Channel.......................................................7

4.3 Feeder via the V-Channel.....................................................................7

4.4 Controls ................................................................................................8

5 Cleaning....................................................................................8

6 Warranty....................................................................................8

“laborette 24“

LABORETTE 24

1 General / Introduction

1.1 Operating manual instructions

• The copyright of these technical documents belongs to Fritsch

GmbH, Laboratory Instruments.

• Reprinting and reproduction of this operating manual is only

allowed with the permission of Fritsch GmbH, Laboratory

Instruments.

• Study the operating manual carefully.

• Operating personnel must be acquainted with the contents of

the operating manual.

Caution !

Pay attention to

operating manual

• Please follow the safety instructions.

• The vibratory feeder has been designed with operational

safety in mind, however residual dangers cannot be ruled out.

The instructions in this manual must be followed in order to

avoid injury to the operators.

• The symbols on the right-hand side indicate the hazards

mentioned in the text.

• Some symbols can also be found on the machine itself and

warn of possible risks.

• Warning symbols are indicated by a surrounding triangle.

• This operating manual is not a complete technical description.

Only elements required for operation and service maintenance

are described.

1.2 Explanation of the symbols used on the

machine and in the operating manual

Danger!

Warning of hazardous point

Pay attention to operating manual

Danger! Mains voltage

“laborette 24“ Page 1

LABORETTE 24

1.3 Short description of the machine

1.3.1 Areas of application

The vibratory feeder is used for continuous or discontinuous

feeding to equipment such as mills, sample dividers, sieve

shakers, mixers and balances.

It is employed wherever fine to coarse-grained, pourable solids

must be fed uniformly. Parts coming into contact with the material

are of stainless steel.

The feed rate can be set between 1 g/min to 2.5 kg/min.

The maximum feed size of the individual particle is approx. 10

mm edge length.

1.3.2 Operating procedure

A stainless steel channel is set into vibration by an electro-

magnet. A stainless steel funnel, fixed to a column and vertically

adjustable, projects into this channel.

The material to be fed is poured into the funnel. When the feeder

channel is activated, the distance from funnel to channel

determines the rate of flow.

The electronic control determines the amplitude of oscillation of

the vibratory feeder and thus the amount and rate of flow of the

material being fed.

The solid cast casing contains an electronically controlled

electro-magnet. Four permanent elastic leaf springs support the

armature of the magnet and a vibrating plate attached to it.

Consequently, when the magnet is activated, the vibrating plate

is attracted; when it is deactivated, it can spring back. An

oscillatory system is formed by the cast casing and magnet on

one side versus armature and vibrating plate with feeder on the

other. The natural frequency of this system is influenced by the

mass of the material being fed, etc.

The desired feed rate is achieved under all operating conditions.

Processor-controlled electronics ensure a reproducible amplitude

of vibration by tuning the frequency generator to the natural

frequency of the vibratory feeder.

The interface built into the control of the channel makes it

possible to stop the flow with an external signal, so that the flow

rate can be controlled via an applied D.C. voltage (in the 5 to 30

V range), etc. The "remote control" of the vibratory feeder during

process control or routine work in the laboratory distinctly

facilitates the work involved while also ensuring reproducible

work operations.

“laborette 24“ Page 2

LABORETTE 24

1.4 Technical data

Dimensions

340 x 440 x 140 mm (height x width x depth)

Weight

net 12kg, gross 16kg

Voltage

The machine can be operated at two levels of voltage:

• 100 to 120 volt single-phase A.C. with protective conductor,

50/60Hz

• 200 to 240 volt single-phase A.C. with protective conductor,

50/60 Hz

(see also chapter on 3.5 Electrical connection)

Electric fuses

A fuse is located on a PC board in the unit. To prevent possible

consequential damage, it separates one pole of the unit from the

mains if a malfunction occurs.

• Replacement: fine-wire fuse 1 A 5 x 20

Material

• Feed size maximum approx. 10 mm edge length

• Feed rate between 1 g/min to 2,5 kg/min

“laborette 24“ Page 3

LABORETTE 24

2 Operational safety

2.1 General safety instructions

• Read the operating manual carefully.

Read operating

manual carefully.

• The vibratory feeder may only be used for the purposes

described in chapter 1.3.1 Areas of application.

• We recommend that a safety logbook should be kept in which

all work (service, repairs etc.) carried out on the machine

should be entered.

• Use only original accessories and original spare parts. The

safety of the machine is impaired if this instruction is not

followed.

• Do not continue to use damaged accessories.

• Operating personnel must be acquainted with the contents of

the operating manual.

For this reason it is essential that – among other things - the

operating manual is kept near the machine at all times.

• Do not remove instructive labels or signs.

• Do not deactivate safety devices.

• Unauthorised changes to the machine lead to the loss of

Fritch’s attestation of conformity to European directives as well

as the loss of the warranty.

• Operating personnel must always operate the machine with

safety in mind.

• All threshold limit values according to current safety

requirements must be followed; if necessary, a ventilator must

be provided or the machine must be operated under an

extractor outlet.

• Exercise caution when handling health-threatening or

combustible liquids.

• Do not run the vibratory feeder unsupervised.

2.2 Operating personnel

• The highvibratory feeder may only be operated by authorised

personnel and maintenance and repairs may only be carried

out by trained specialists.

• People with health problems or under the influence of

medication, drugs, alcohol or exhaustion must not operate the

highvibratory feeder.

“laborette 24“ Page 4

LABORETTE 24

3 Installation

3.1 Unpacking

• Open the carton and lift the machine carfully.

• Compare the contents of the delivery with your order.

3.2 Transportation

• To carry, grip under the housing edge.

3.3 Setting up

The vibratory feeder must be installed horizontally on a flat

surface or in a stable stand. The rubber feet guarantee positional

stability. It does not have to be secured at the work station,

however ready access and adequate clearance should be

ensured.

The control casing can be set up on the floor or hung on the wall.

Its underside has apertures for easy fastening to the wall.

3.4 Ambient requirements

• The machine may only be operated indoors.

Danger: mains voltage

• The surrounding air must not contain electrically conductive

dusts.

• Room temperature must be between 5 - 40°C.

• Height up to 2000m sea level

• Maximum relative humidity 80% for temperatures up to 31°C,

linearly decreasing to 50% relative humidity at 40°C.

• Contamination grade 2 in accordance with IEC 664.

“laborette 24“ Page 5

LABORETTE 24

3.5 Electrical connection

3.5.1 Check for Agreement of Voltage and Current

1. Before connecting the unit, check to ensure that voltage and

current stated on the nameplate agree with those in your area:

• 100 to 120 volt single-phase A.C. with protective conductor,

50/60 Hz

• 200 to 240 volt single-phase A.C. with protective conductor,

50/60 Hz

• mains fuse max. 16 A

2. Plug connector of vibratory feeder into the control casing

⇒ and lock connector.

3. After doing so, plug mains connector into the mains supply.

3.5.2 Interface

A three-pole circular plug to DIN 41524/IEC 130-9 with a

screw connector is used as an interface to input a control

command externally. Applied extra-low voltage between 5

and 30 V D.C. interrupts the oscillation of the vibratory

feeder.

(During installation, make certain that polarity is correct -

see circuit diagram; control current < 1 mA)

3.5.3 Activating the Feeder

Before Activating the Feeder:

• Make certain that plug in is fixed.

• Control Unit: Turn Potentiometer to the left end.

“laborette 24“ Page 6

LABORETTE 24

4 Working with the mill

4.1 Material Feed

1. Line up the vibratory feeder so that the end of the feeder is

over the filler opening for the flow of material.

2. Adjust distance between funnel and feeder channel.

If material is dusty, select gap which is not too large (about 3

mm), otherwise dust will emerge and/or funnel will overflow.

3. Turn potentiometer on the control casing to the left stop.

4. Fill funnel with material.

5. Set rocker switch to "On".

6. Slowly turn potentiometer clockwise until the desired feed

rate is reached.

4.2 Feeding via the Standard Channel

The standard channel has a outlet 26 mm wide. Optimum

results are attained with this channel, especially where

large amounts of material are involved. The standard

channel is attached to the magnet armature with 4 screws

and can easily be replaced by the V-channel.

4.3 Feeder via the V-Channel

This V-shaped channel can produce a narrow flow of

material which must be directed onto a narrow opening. The

V-channel is attached to the magnet armature with 4 screws

and can easily replaced by the standard channel. The

associated funnel has a tip of appropriate configuration.

“laborette 24“ Page 7

LABORETTE 24

4.4 Controls

Rocker switch „Power“

When "On", green light in switch is lit.

Control of the feed rate:

amplitude of oscillations

infinitely controllable

Interruption of feed (external interrupt)

Indicator is red.

5 Cleaning

It is advisable to remove the funnel for cleaning.

Funnel and vibratory feeder can be cleaned thoroughly by

rubbing them with dry or damp cloth or brush.

Danger: mains voltage

6 Warranty

The warranty card accompanying this delivery must be

completely filled in and returned to the supplier in order for the

warranty to come into force.

The option of online registration is available. For further

information, please refer to your warranty card or visit our

Homepage http://www.fritsch.de

The company Fritsch GmbH, Idar-Oberstein and its "Application

Technology Laboratory" or the corresponding state

representatives will gladly offer help and advice.

It is necessary to name the serial number imprinted on the

nameplate with any enquiries.

“laborette 24“ Page 8

Fritsch Vibratory Feeder LABORETTE 24 Operating instructions

Fritsch Vibratory Feeder LABORETTE 24 Operating instructions

Fritsch Vibratory Feeder LABORETTE 24 Operating instructions

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