835204-006 Kneter-W30-EHT BA-00-e - Brabender · PDF fileEdition 0712 Instruction Manual No....

... where quality is measured.

Instruction Manual

Brabender® GmbH & Co. KG •••• Kulturstr. 51-55 •••• 47055 Duisburg •••• Germany �� Phone - 49 - 203 - 7788 - 0 •••• �� Fax - 49 - 203 - 7788 - 101

�� E-mail: [email protected]

Agencies all over the world Brabender GmbH & Co. KG 2012 Copyright protection DIN 34 Edition 0712 Instruction Manual No. 835204-006_Kneter-W30-EHT_BA-00-e

Measuring Mixer Type W 30 EHT

Ident no. 8 352 04.006

for drive units

Plastograph® EC/EC "Plus"

REGISTRATION CARD Brabender® GmbH & Co. KG

Important! Please complete and return to: Important! Veuillez compléter et retourner à: / Wichtig! Bitte ausfüllen und zurücksenden an: /

Importante: Voglia completare e rispedire a: / Importante: Haga el favor de completar y devolver a:

Brabender GmbH & Co. KG, Kulturstr. 51-55, 47055 Duisburg, Germany Tel. No: ++ 49 - 203 - 7788 - 0

Fax. No.: ++ 49 - 203 - 7788 - 100 E-mail: [email protected]

Please state the Brabender order no. of your equipment: Inscrire ici le numéro de commande Brabender de votre appareil / Bitte hier die Brabender Order-Nr. Ihres Geräts eintragen /

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USER OF EQUIPMENT Utilisateur / Benutzer / Utente / Utilizador

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Measuring Mixer Type W 30 EHT for Plastograph ® EC/EC Plus 3

Contents

1 GENERAL INFORMATION................................ .....................................5

1.1 Symbols and abbreviations ............................................................................................................5

1.2 Application......................................................................................................................................6

1.3 Disclaimer of liability.......................................................................................................................6

1.4 Noise measurement .......................................................................................................................6

2 SAFETY ..................................................................................................7

2.1 Due application...............................................................................................................................7

2.2 Target groups.................................................................................................................................7 2.2.1 Mounting, modification, disposal.........................................................................................7 2.2.2 Operation, cleaning, maintenance ......................................................................................7 2.2.3 Repair .................................................................................................................................7

2.3 Safety instructions for the user.......................................................................................................7

2.4 Safety devices ................................................................................................................................8 2.4.1 Emergency motor stop button at the drive unit ...................................................................8 2.4.2 Auto-identification and torque limitation ..............................................................................8 2.4.3 Safety device.......................................................................................................................9 2.4.4 Two hand control device .....................................................................................................9

2.5 Remaining risks............................................................................................................................10 2.5.1 Hot surfaces - danger of burning ......................................................................................10 2.5.2 Rotating blades - risk of injury...........................................................................................10

3 TRANSPORT AND STORAGE .............................. ...............................11

3.1 Packing.........................................................................................................................................11

3.2 Transport ......................................................................................................................................11

3.3 Unpacking ....................................................................................................................................11

3.4 Scope of supply............................................................................................................................11

3.5 Notification of damage .................................................................................................................11

3.6 Storage.........................................................................................................................................12

4 FEATURES AND OPERATING PRINCIPLE................... ......................13

4.1 Measuring mixer...........................................................................................................................13

4.2 Measuring principle ......................................................................................................................14

4.3 Additional equipment/Supplementary modules ............................................................................14 4.3.1 Quick loading chute* .........................................................................................................14 4.3.2 Pressure ram ....................................................................................................................14 4.3.3 Pressure ram with bore* for dosing liquids .......................................................................15 4.3.4 Pneumatic loading chute* .................................................................................................15 4.3.5 Precision metering pump*.................................................................................................15 4.3.6 Sealing cover* ...................................................................................................................15

5 TECHNICAL DATA ..................................... ..........................................16

4 Measuring Mixer Type W 30 EHT for Plastograph ® EC/EC Plus

6 INSTALLATION ....................................... .............................................17

6.1 Basic requirements ......................................................................................................................17

6.2 Setup and assembly.....................................................................................................................18 6.2.1 Mounting the mixer to the drive unit* ................................................................................18 6.2.2 Mounting the mixer blades................................................................................................19 6.2.3 Electric Connections .........................................................................................................19 6.2.4 Cooling air connection ......................................................................................................21 6.2.5 Connection of additional equipment* ................................................................................21

7 START-UP AND OPERATION............................. .................................22

7.1 Manpower requirements ..............................................................................................................22

7.2 Preparations .................................................................................................................................22

7.3 Test procedure .............................................................................................................................23 7.3.1 Preparations prior to test start...........................................................................................23 7.3.2 Filling the sample into the mixer .......................................................................................24

7.3.2.1 Loading with the quick loading chute* ................................................................24 7.3.2.2 Loading with the pressure ram*..........................................................................25 7.3.2.3 Loading with the pneumatic loading chute* ........................................................25

7.3.3 Checking the filling level of the mixer................................................................................26 7.3.4 Test end and cleaning of the measuring mixer.................................................................27

7.4 Evaluation of the test results ........................................................................................................28 7.4.1 Evaluation criteria..............................................................................................................28 7.4.2 Accuracy and reproducibility .............................................................................................28

8 MAINTENANCE ........................................ ............................................29

8.1 Cleaning .......................................................................................................................................29

8.2 Lubrication of the gear unit...........................................................................................................32

8.3 Exchange of bushings..................................................................................................................32

8.4 Abrasion check.............................................................................................................................32

9 TROUBLE-SHOOTING................................... ......................................33

10 ACCESSORIES ....................................................................................34

11 SPARE PARTS ........................................ .............................................34

12 ANNEX..................................................................................................34


1 GENERAL INFORMATION

Brabender® instruments/software are of a high technical standard and comply with the demand for simple and safe handling. At the same time, they are designed for universal application and, thus, for handling manifold technical tasks. It is strongly recommended to study this instruction manual very carefully before putting the instrument into operation in order to become familiar with the manifold possible applications and to use the instrument/software in an optimum way.

This instruction manual has been supplied together with the instrument/software and is intended for operation in practice. It is to make the user familiar with the instrument/software and to inform him about functional details and maintenance.

Safety instructions and precautions have to be obs erved in order to avoid accidents due to improper handling and operation.

The information contained in this instruction manual will also be useful for the detection and repair of any possible troubles. This instruction manual is, thus, to be considered part of the instrument/software and must be available to the operating personnel.

Within the scope of legal regulations, Brabender® refuses any liability for direct or indirect damage caused in connection with the delivery or use of Brabender® instruments. This is especially true for improper use of Brabender® instruments.

Maintenance and service instructions have to be observed for reasons of safe operation and durability.

For safety reasons beware of unauthorized operatio n, any modification of Brabender instruments or any other unauthorized interference.

At the same time, it should be considered that war ranty will expire as a consequence of improper use and unauthorized operation and/or modi fication and/or any other unauthorized interference.

If there are any inquiries to Brabender® - e.g. relating to handling of instruments/software, ordering of spare parts, accessories, additional equipment or to sending back instrument parts for maintenance or repair - please always state completely all data and complete numbers given on the name plate.

For questions concerning the software, please also state the number of your software version in addition to the software ident no.

As the measuring mixers series 30 EHT and 50 EHT differ only negligibly from each other, the pictures show a series 50 EHT measuring mixer.

Brabender will, of course, always be at your disposal for any information going beyond the scope of this instruction manual.

1.1 Symbols and abbreviations

Some of the elements of the instrument system mentioned in this instruction manual are optional or additional equipment. They are marked with a * within the text.


1.2 Application

Brabender measuring mixers type W 30 EHT with electric heating are measuring heads to be connected to a Brabender Plastograph® EC* or EC Plus*. They serve for testing thermoplastics, thermosets, elastomers, and similar materials with regard to the combined influence of temperature and shear.

1.3 Disclaimer of liability

Within the scope of legal regulations, Brabender® GmbH & Co. KG refuses any liability - for whatever legal argument - for direct or indirect damage caused in connection with the delivery or use of the Brabender® instrument/software. This is in particular true for - but not limited to - improper use and/or improper operation and handling of the Brabender® instrument/software.

In this context, Brabender explicitly excludes any warranty for wear parts, in particular for those with product contact.

Under no circumstances, Brabender® GmbH & Co. KG can be made liable for any damage or injuries caused by non-observance of the safety regulations included in the data sheets of the producer of substances, e.g. polymer(s), to be tested or processed with the Brabender® instrument. This is also valid if a recommendation was made concerning the application of certain substances and/or if the provision of test material (polymers) is part of the scope of supply and service.

The Brabender instrument is subject to modifications of color and design as well as to technical modification without prior notice.

1.4 Noise measurement

Noise measurement was made under normal operating conditions within the speed range of the instrument at a distance of approximately 1 m and at a height of approximately 1.6 m.

The equivalent continuous sound pressure level measured is Leq < 70 dB(A) .


2 SAFETY

2.1 Due application

The instrument may only be used with designated drive unit (Plastograph® EC* or EC Plus*) for testing suitable, free-flowing substances. The instrument must not be used for testing or processing explosives. The instrument may only be used when completely assembled.

2.2 Target groups

2.2.1 Mounting, modification, disposal Mounting, modification, and disposal of the Brabender® measuring mixer may only be carried out by technically skilled personnel with the corresponding qualification. Electric work is only allowed to be carried out by skilled electricians.

2.2.2 Operation, cleaning, maintenance Routine operation, cleaning during routine operation, and maintenance of the Brabender® measuring mixer may be carried out by unskilled personnel.

However, the personnel in charge of operation, cleaning, and maintenance of the Brabender® measuring mixer must have been instructed by a skilled person.

2.2.3 Repair Repair work at the Brabender® measuring mixer is only allowed to be executed by Brabender® service technicians or by skilled personnel authorized for this work by Brabender®.

2.3 Safety instructions for the user

Prior to operation, the user must make sure of the correct condition and set-up/assembly of the instrument.

The carrier of the Brabender® measuring mixer has to make sure within his organization that the persons named in chapter 2.2 "Target groups" only carry out work at the measuring mixer they are authorized to do.

The carrier of the Brabender® measuring mixer has to furnish proof of training of the personnel in charge of operation, cleaning, and maintenance of the Brabender® measuring mixer.

The carrier of the Brabender® measuring mixer has to make sure that the operating personnel, prior to testing and processing any test material with the Brabender® measuring mixer, read and understood the instruction manual of the Brabender® measuring mixer as well as the safety data sheets of the respective producer of the test material and will observe them. The measures listed in the respective safety data sheets of the producer of the test material for avoiding any possible danger when handling the corresponding material must strictly be observed

Disregard of the safety instructions may cause dan ger for the operating personnel. This is also true for arbitrary, unauthorized, and improper modifications to the instrument.

Under no circumstances, Brabender can be made liable for any damage or injuries cause d by non-observance of such safety regulations.


2.4 Safety devices

The instrument shall be protected by presetting alarm and limit values (see also separate instruction manuals of the software). This also increases safety for the operating personnel.

2.4.1 Emergency motor stop button at the drive unit

The Brabender® Plasti-Corder® Lab-Station* used as a drive unit for the Brabender measuring mixer is equipped with an emergency motor stop button located on the top surface of the Brabender® Plasti-Corder® Lab-Station* in the front right corner (front view, see fig. below).

Pressing down the emergency motor stop button immediately stops the motor of the drive unit*.

Emergency motor stop button at the Plastograph® EC/EC Plus*

Fig. 2-1

2.4.2 Auto-identification and torque limitation

The Brabender measuring mixer is equipped with an encoder box for automatic instrument identification and torque limitation.

The 8-pole cable of the measuring mixer must be connected with the socket "Torque limit key" on the left top of the control side of the drive unit* used.

The drive unit* automatically recognizes the measuring mixer connected and the max. admissible torque for this mixer. If the max. admissible torque is exceeded, the motor of the drive unit* is stopped immediately.

Socket "Torque limit key" at the Plastograph® EC*/EC Plus* Encoder box at the measuring mixer

Fig. 2-2


2.4.3 Safety device The measuring mixer itself is equipped with a safety device (see fig. below). This prevents unintentional operation of the mixer when the mixer bowl is open and serious hand injuries due to rotating mixer blades.

At the front side of the mixer, a plug is fixed via a chain. When the mixer is closed, this plug is connected to a counterpart at the mixer rear wall. The drive motor can only be started when the plug is connected to its counterpart.

If the mixer front is removed, the plug connected to the rear wall is drawn out of the receptacle and the drive motor stops immediately.

Safety device at the measuring mixer

Fig. 2-3

2.4.4 Two hand control device Sometimes, the mixer can only be emptied by drawing off the bowl while the blades are running. As the instrument stops immediately when the front plate is opened (see 2.4.3), the mixer bowl is equipped with a two-hand control device consisting of a switch button at each of the two mixer handles (see fig. below).

The cables of the two mixer handles must be connected to the sockets "2 Hand Safety Device" on the control side of the Plastograph® EC*/EC Plus*.

When the mixer is open, the drive motor can be started with a crawling speed of 4 min-1 by simultaneously pressing these buttons. This facilitates drawing off of the mixer bowl for cleaning purposes after a test.

Never clean the mixer while the rotor is still run ning. Danger of most serious injuries!

Never have two persons work simultaneously on the mixer. Otherwise, the drive might be switches on unintentionally while the mixer is open or during cleaning of the mixer.

Socket for cable of the left mixer handle

Two-hand control device

Socket for cable of the right mixer handle

Fig. 2-4


2.5 Remaining risks

2.5.1 Hot surfaces - danger of burning

Due to the high processing temperatures of the materials tested with the Brabender measuring mixer, the entire measuring mixer may reach very high temperatures during operation.

Risk of severe burning during start-up, operation, and during maintenance and cleaning work due to the high temperature of the mixer surfa ces!

Always wear suitable protective gloves when workin g at the hot measuring mixer!

2.5.2 Rotating blades - risk of injury When the feed opening of the measuring mixer has not yet been or is no longer closed by the loading chute* or by the pressure ram* (e.g. during material feeding with the pneumatic loading chute*, after removal of the loading chute* for observing the mixing process, during cleaning, etc.), the rotating mixer blades are no longer secured against access.

Risk of serious injury in case of uncovered feed o pening when the drive unit* is switched on.

Never put your hands into the feed opening when th e drive unit* is switched on!

Risk area feed opening

Fig. 2-5


3 TRANSPORT AND STORAGE

3.1 Packing

The instruments are thoroughly packed into wooden crates. Small parts and accessories are packed into cardboard boxes or bags in the crates. Additional equipment is packed either in the same crate as the instrument or in a separate crate, depending on the scope of the order.

3.2 Transport

On the outside of the crate, there are signboards which always must be observed by all means:

This side up!

Fragile, handle with care!

Keep dry!

3.3 Unpacking

First remove the cover of the crate, then take off the lateral walls. Take care of braces and supports within the crate as well as of bolt connections to the bottom of the crate, etc.

When unpacking the equipment, take care that no small parts or accessories which are not fixed to the instrument remain in the packing material. Parts of the equipment may have loosened during transport and may be hidden between the packing material. Therefore, the whole packing material has to be searched very carefully before disposal.

Instructions on labels and stickers need to be obs erved carefully.

Covering hoods and films should not be removed until setup and commissioning, respectively.

3.4 Scope of supply

The scope of supply must be compared with the shipping documents immediately after arrival at the place of destination. If there is any discrepancy, Brabender® must be notified immediately.

3.5 Notification of damage

Inspect the instrument immediately after unpacking for any signs of damage. Should any damage be evident, regardless of whether it apparently occurred during carriage or not, notify the delivering carrier immediately and claim damages with him. If necessary, the delivering carrier must be given the opportunity to inspect the shipment. Brabender also must be notified immediately.

If, in the order, the risks of carriage were agreed to be taken by the buyer or by the receiver, the buyer or the receiver has to observe the regulations of the insurance policy.


3.6 Storage

Residual product, in particular residues of aggressive products like e.g. ceramics, distilled water, etc. may cause wear such as abrasion and/or corrosion up to pitting within very short time.

Likewise, storage in humid or aggressive environment may cause corrosion and, in extreme cases, pitting corrosion.

� Thoroughly clean and dry all machine parts before storage, in particular those with product contact.

Particular care must be taken for clean and dry edges, angles, and grooves (e.g. with grooved screws*).

� Prior to storage, disassemble all parts with product contact such as screws*, screw elements*, mixer blades*, etc. and thoroughly clean and dry them.

� Apply a thin (!) film of machine oil (multi-purpose oil) on all parts with product contact.

� Screws*, screw elements*, mixer blades* and similar parts must be packed individually in protective nets.

� Store the Brabender® instrument and all parts thereof in dry rooms only.

� Put the Brabender® instrument on a support which is at least 200 mm high in order to protect the instrument from ground humidity.

� Arrange storage areas so that moisture can escape and periodical inspections are possible.

Extreme temperature variations or long exposure to direct sun may cause damage to the instrument or machine.

� Do not expose the Brabender® instrument or parts thereof to extreme temperature variations or direct sun.

The admissible limit values of ambient temperature and humidity for storage and for operation are included in the list of technical data.


4 FEATURES AND OPERATING PRINCIPLE

4.1 Measuring mixer

Brabender measuring mixers 30/50 EHT consist of the following main components:

• mixer backstand with gear unit and mixer rear wall

• detachable front plate

• detachable mixer bowl

• mixer blades

Cooling air connection for gear unit

(continuous cooling only)

Bayonet nipple for control thermocouple

Rear wall heating


Bowl heating

Cooling air connection for mixer bowl (continuous air supply or via a solenoid valve

controlled by a 2. temperature controller)

Front wall heating


Mixer backstand with gear unit Rear wall

Mixer blades Two-hand control device Mixer bowl Melt temperature thermocouple Plug of safety device

Fig. 4-1

The mixer is connected through a spiral tooth gear clutch to the drive unit. The measuring mixers of the 30 and 50 EHT series can easily be interchanged at the drive unit.

The blades made of corrosion-proof and wear-resistant steel are fixed through a bayonet locking and held by thrust bearings. For the type 30 EHT mixer, the following blades can be mounted:

• roller blades

Heating/cooling of the measuring mixers is done electrically with air cooling. The cooling of the gear and the mixer bowl is done by compressed air.

For controlled cooling of the mixer bowl the instrument is equipped with a solenoid valve. The solenoid valve is triggered separately by the temperature controller.

The temperature of the mixer is measured through control couples. The stock temperature is recorded by a thermocouple screwed from the bottom into the mixer bowl.


4.2 Measuring principle

The measuring principle is based on making visible the resistance which the sample material opposes to the rotating blades. The corresponding torque moves a dynamometer out of its zero position. In compliance with the existing standards and test specifications, a typical "PLASTOGRAM®" (torque and stock temperature vs. time) is recorded for each sample material. This diagram shows the relationship between torque (viscosity) and temperature/time in consideration of structural changes of the material. The measured data are displayed during the running measurement on the monitor of the computer* or on the display unit* and can be stored and printed on a connected printer*.

4.3 Additional equipment/Supplementary modules

For the ident nos. of the additional equipment and supplementary modules, please refer to the lists "Additional Equipment" and "Supplementary Modules", respectively, in the annex of this instruction manual. For some of the additional equipment, there are separate instruction manuals.

4.3.1 Quick loading chute* The quick loading chute* facilitates and accelerates feeding of powdery substances into the measuring mixer. Certain tests e.g. the determination of the fusion time of rigid PVC dry blends can only be executed with the help of a quick loading chute*.

The quick loading chute* is made of corrosion-proof steel. It can be mounted and detached very easily. The individual components of the quick loading chute* are screwed and pinned together.

The quick loading chute* is mounted onto the measuring mixer only just before the material is fed into the measuring mixer. The sample material id fed from the top into the loading chute* while the mixer blades are running. As soon as the whole material has been filled into the quick loading chute*, the plunger is put onto the loading chute*, weighted with the loading weight*, and pressed down evenly and as quickly as possible by the operator. Thus, uniform and quick feeding of the sample into the measuring mixer is ensured.

Fig. 4-2

4.3.2 Pressure ram* The pressure ram* facilitates and accelerates feeding of non-powdery substances into the measuring mixer. It also serves for feeding materials which e.g. become gluey already at low temperatures or are compressed that strongly already under low pressures that they cannot be pressed into the mixer by means of the loading chute* (see 4.3.1 and 4.3.4).

Subsequently, the pressure ram is loaded with the loading weight*.

Fig. 4-3


4.3.3 Pressure ram with bore* for dosing liquids A pressure ram with bore* for absorption tests is also available. It is connected to an automatic burette* or a precision metering pump* so that the liquid can be dosed through the bore into the closed mixing chamber.

4.3.4 Pneumatic loading chute* The pneumatic loading chute* permits quick and well-defined feeding of pourable substances into the measuring mixer. Certain tests like e.g. the determination of the fusion time of rigid PVC dry blends can only be executed with the help of a loading chute*.

The piston of the pneumatic cylinder which is mounted on the top of the pressure rm, is pressurized with compressed air. On the top of the pneumatic cylinder, there is a manometer for monitoring the closing pressure, a pressure reducing valve for changing the pressure, and a throttle valve for changing the lifting and lowering speed of the piston. The loading chute* is equipped with a feed hopper.

Before a test is started, the air pressure required ha to be adjusted at the pressure reducing valve. While the blades are running, the sample is filled in through the feed hopper, and the piston is lowered immediately by actuating the two hand safety switch. When the sample material has plasticated, the loading chute* usually is removed.

Fig. 4-4

4.3.5 Precision metering pump* An automatic precision metering pump* is available for feeding liquids into the measuring mixer. The dosing rate can be adjusted.

4.3.6 Sealing cover*

The sealing cover* permits to run tests under inert gases in Brabender measuring mixers. Moreover, gases or vapors accumulating in the mixer bowl during the test can be discharged through one of the two valves in the sealing cover*.

The sealing cover* is made of corrosion-proof steel. It is equipped with two valves for the connection of flexible tubes. Mounting and detachment are very easy. The bottom of the sealing cover* has a strong PTFE sealing.


5 TECHNICAL DATA

Mixer W 30 EHT

Volume of mixer bowl, approx. [cm 3] 30

Sample weight 1) [g] 25 - 40

Torque max. [Nm] 200

Speed ratio

(driven : idle blade)

2 : 3

Operating temperature max. [°C] 500

Dimensions of the mixer (W * H * D) [mm]

approx. 500 * 200 * 430

Mains connection 1 * 230 V + N + PE, 50/60 Hz, 16 A

Environmental conditions

Storage: Temperature: -25°C ... +55°C

Humidity: 5 % ...95% rel. hum. max.

Operation: Temperature: +5°C...45°C

Humidity: 5 % ...95% rel. hum. max.

1) depending on the specific weight and bulk density of the sample material


6 INSTALLATION

6.1 Basic requirements

The unpacked instrument is recommended to be carried very carefully to the place of installation. Hard touch-downs must be avoided absolutely.

The connection and adaptation points for the power supply of the instrument are recommended to be located as near as possible to the place of installation of the instrument.

The measuring mixers with electric heating are used as measuring heads to be connected to a Plastograph® EC* or EC Plus*. The electric energy required for heating the mixer is supplied by the temperature control unit of the drive unit*. For the voltage of the drive unit*, please refer to the separate instruction manual of the Plastograph® EC*/EC Plus*.

Requirements:

Electric energy: see technical data and separate operating instructions of the Plastograph® EC*/EC Plus* and of the additional equipment

Compressed air: 1.5 bars

In the annex, please find a list of the special tools supplied with the instrument. Apart from these, normal tools like screw-drivers, etc. are required.

Assembly is recommended only to be effected carefully by competent technical staff.

Electric work is only allowed to be executed by co mpetent electricians.

1

2

3

4


6.2 Setup and assembly

Cover hoods and foils should only be removed at th e final place of installation, when all remaining packaging has been removed. Information o n labels and stickers are to be noticed exactly.

6.2.1 Mounting the mixer to the drive unit*

Make sure that the mounting surface of the drive unit is perfectly clean and levelled horizontally.

Screw the stock temperature thermocouple through the bottom into the mixer bowl (factory-mounted when the instrument is supplied).

The tip of the stock temperature thermocouple should penetrate approx. 1.0...1.5 mm into the mixer bowl (see fig. below). In order to obtain reproducible measuring results, always make sure that the thermocouple is positioned correctly.

Fig. 6-1

Open the knurled nuts on the two stud bolts on the mounting surface of the Plastograph® EC*/EC Plus* until they are in line with the top surface of the stud bolts.

The measuring mixer* may overturn - Danger of inju ry, danger of damage to the mixer!

Secure the measuring mixer* with your hands as lo ng as it has not yet been fixed tightly on the drive unit*.

Push the measuring mixer against the Plastograph® EC*/EC Plus* up to the limit stop.

The stud bolts on the mounting surface of the Plastograph® EC*/EC Plus* must fit into the recesses of the two mixer feet and the coupling sleeve* must completely embrace the clutch of the Plastograph® EC*/EC Plus*.

Fig. 6-2

Tighten the knurled nuts on the stud bolts by hand.

Firmly tighten the knurled nuts on the stud bolts using the cam wrench from the accessory kit of the Plastograph® EC*/EC Plus*.

1

2

3

4

5

6


6.2.2 Mounting the mixer blades

For opening the mixer, loosen the two hexagon socket screws on the front plate and open the swivel tie-bar.

Draw off the front plate and the mixer bowl.

Mount the blades:

1. Insert the right blade and lock it by turning it clockwise by approx. 30°.

2. Insert the left blade and lock it by turning it counter-clockwise by approx. 30°.

Make sure that the two blades are fixed correctly.

Mount the mixer bowl and the front plate onto the two stud bolts and fix it by means of the swivel tie-bar and the two hexagon socket screws M10.

Tighten the screws evenly in order to avoid any displacement of the mixer bo wl and possible danger resulting thereof.

Connect the safety control switch at the front of the mixer to the socket at the mixer backstand.

6.2.3 Electric Connections

Connect the cable of the safety device of the measuring mixer with the socket "Safety Device" on the control side of the Plastograph® EC*/EC Plus* verbinden (see fig. below).

See point marks on plug and socket!

Socket "Safety Device" Fig. 6-3

Connect the cables of the two-hand control device from the mixer handles to the sockets "2 Hand Safety Device" on the control side of the Plastograph® EC*/EC Plus* and tighten the connector coupling rings by turning them clockwise (see fig. below).

Sockets "2 Hand Safety Device" at the Plastograph® EC*/EC Plus* Fig. 6-4

1

2

3

4

5

6

1

2


Connect the cable of the encoder box of the measuring mixer to the socket "Torque limit key" in the left top corner of the control side of Plastograph® EC*/EC Plus* (see fig. below).

Socket "Torque limit key" at the Plastograph® EC*/EC Plus* Encoder box Fig. 6-5

Connect the cable of the melt temperature thermocouple to the socket "Stock Temperature" Nr. 1 at the terminal board of the Plastograph® EC*/EC Plus* verbinden.

Mount the control thermocouples into the corresponding bayonet nipples of the measuring mixer and lock them by pressing the bayonet lock down and, at the same time, turning it clockwise.


of the rear wall (zone no. 3)

Bayonet nipple for control thermocouple of the bowl (zone no. 2) Bayonet nipple for control thermocouple of the front wall (zone no. 1)

Fig. 6-1

The control thermocouples must be connected in the same order as they are mounted on the measuring mixer, beginning with ther mocouple no. 1 which is mounted into the front plate of the mixer.

Even a single thermocouple which has been connect ed wrongly or not at all may cause substantial damage to the whole instrument sy stem.

Make sure for correct seating of the control therm ocouples: the spring must be slightly tensioned .

Connect the cables of the control thermocouples according to their zone number to the corresponding sockets "Control Temperature" at the terminal board of the Plastograph® EC*/EC Plus*.

Plug any free "Stock Temperature" and "Control Temperature" sockets with short-circuit plugs.

Make sure that all control thermocouples have been mounted and connected properly.

Connect the cables of the three heater zones of the measuring mixer to the corresponding sockets at the terminal board of the Plastograph® EC*/EC Plus* according to their zone number (see fig. below).

Socket for melt temp. thermocouple

Sockets for control thermocouples and

heater cables zone 1 - 3

Fig. 6-2 (Example Plastograph® EC Plus*)

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6.2.4 Cooling air connection

Danger of damage to the gear unit by elevated temp eratures! In case of mixer temperatures of more that approx. 200°C the gear unit must be co oled!

Use a suitable hose to connect cooling air from the compressed air net (approx. 0.5 bar) to the cooling air connection on the left side of the gear unit of the mixer (see fig. below).

Cooling air connection at the gear unit Fig. 6-3

Secure hose connections with hose binders.

For the mixer tests, the measuring mixer must be kept at a constant temperature. For this purpose, cooling air (controlled by the solenoid valve in the Plastograph® EC*/EC Plus*) can be supplied to the mixer:

In the Plastograph® EC*/EC Plus* models from 2010 onwards, the solenoid valve unit is integrated in the standard version of the drive unit. With previous models, the solenoid valve unit must be ordered separately and mounted to the Plastograph® EC*/EC Plus* (see separate instruction manual of the Plastograph® EC*/EC Plus*.

1. Connect the Y-piece of the measuring mixer (type 50 EHT) or the metal tube at the bottom of the mixer bowl (type 30 EHT) via a suitable hose to the socket "Air Cooling" no. 2 at the terminal board of the Plastograph® EC*/EC Plus*.

Remark: Only the bowl of the measuring mixer (= zone no. 2) is cooled, i.e. cooling must be connected to the socket "Air Cooling" no. 2.

Type 50 EHT: Y-piece for bowl cooling

Type 30 EHT: Metal piece

for bowl cooling

Fig. 6-4

2. Connect the socket "Air Cooling" IN at the terminal board of the Plastograph® EC*/EC Plus* via a suitable hose to the compressed air net (0.5 - 1.5 bar).

3. Secure all hose connections with hose binders.

6.2.5 Connection of additional equipment* For installation and connection of any further additional equipment*, please refer to the separate instruction manuals of the individual units.

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7 START-UP AND OPERATION

For computer-aided systems, please also see instruction manuals for the individual software programs.

7.1 Manpower requirements

Only trained and competent personnel shall be assi gned to operate the instrument.

During operation, one person usually suffices for operating the instrument.

7.2 Preparations

Check all fixtures and connections of the individual units of the system.

Check all connections between the Plastograph® EC*/EC Plus* and the measuring mixer.

Make sure that the the safety switch, the encoder box, and the two-hand control device have been connected properly.

Make sure that the mixer bowl is perfectly clean.

If necessary, connect the air inlet flanges to the cooling air system and turn on the compressed air supply.

The gear unit of the mixer must be cooled if the m ixer bowl temperature exceeds 200°C.

Before a test is started, the mixer must be heated up to the processing temperature required for the material to be tested.

For this purpose, start the drive unit* with the temperature controller* according to the separate instruction manual.

Heating/cooling of the mixer must always be done i n a controlled manner, i.e. the control thermocouples must be mounted correctly bef ore test start.

Do not start the temperature controller* without having mounted the control thermocouples in the respective heating zones.

Make sure for proper seat of the control thermoco uples.

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7.3 Test procedure

7.3.1 Preparations prior to test start Before a test is started, always make sure whether all test conditions have been set correctly and are displayed and recorded properly.

In order to get familiar with the instrument, it is recommended first to run tests with low viscosity, non-curing compounds and to observe the torque and the temperature development very carefully.

Make a preliminary test in order to determine the optimum conditions for your test, i.e. sample weight, mixer temperature, speed, torque measuring range, and damping.

For initial tests select a large torque measuring range and a low speed, e.g. 20...30 min-1.

On the basis of the documentation of the raw material supplier, determine

• type

• density

• softening and melting points

of the material to be tested.

Determine the sample weight as follows:

m V cm g cm KM= • •( ) ( / )3 3ρ

with:

m = mass of the test material

V = mixer volume: 30 cm3 (type 30) with roller blades

ρM = density of the sample material at ambient temperature

K = constant 0.7...0.8

The constant K is a non-dimensional coefficient which considers the optimum filling level for different dynamic loads. Usually, this factor is < 1. For initial tests, we recommend to use K = 0.7.

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7.3.2 Filling the sample into the mixer

Always use a suitable Brabender loading chute* or pressure ram* for loading the sa mple material into the measuring mixer.

Never use your hands for directly loading material into the mixer - danger of most serious injuries!

In order to prevent an overload of the system and to guarantee a good reproducibility of the results, the following points are to be noticed:

Always carefully observe the torque signal when loa ding the material into the mixer!

High piston pressure during loading of very viscous materials or when loading very large sample weights may cause high torque loads exceeding the admissible maximum load of 200 Nm and causing shear element failure in the mixer coupling.

In order to prevent such overload and possible shear element failure, the material should be screened and coarse particle should be crushed, if necessary.

Load the material as quickly as possible, take care for uniform loading times.

Quick loading implies that the sample material is free-flowing or is available as strips or flakes which can easily be fed into the mixer.

Reproducibility of the measuring results implies uniform loading times.

Make sure for uniform starting temperature of the l oading device.

In order to obtain reproducible results, the loading device* needs to have always the same starting temperature. Pellets with a high melting point may require preheating of the sample material.

Loading of liquids

Liquids should be filled into small PE bags which are bonded and then loaded into the measuring mixer. By means of suitable metering pumps*, liquids can also be fed through the bore of a special pressure ram* (see additional equipment).

Cross-linking materials

In case of cross-linking (curing or vulcanizing) materials, it is recommended to remove the loading weight* and the pressure ram* or the loading chute* as soon as the torque minimum, i.e. the lowest melt viscosity before cross-linking has been reached.

7.3.2.1 Loading with the quick loading chute*

The quick loading chute* should be mounted onto the mixer only just before the test is started in order to prevent heating up of the loading chute* in advance by radiation heat which would impede loading of the material into the mixer.

When mounting the quick loading chute*, take care to keep a sufficient distance of your hands to the feed opening of the mixer - danger of most serious injuries of your hands!

Fill the material into the loading chute* while the blades are running.

Put the piston into the loading chute* and weight it with the loading weight*.

Press the weight* down manually.

Always carefully observe the torque signal during this procedure.

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7.3.2.2 Loading with the pressure ram*

When mounting the pressure ram*, take care to keep a sufficient distance of your hands to the feed opening of the mixer - danger of most seri ous injuries of your hands!

As the feed opening of the mixer is opened again an d again when loading material with the pressure ram*, always take care to keep a sufficien t distance of your hands to the feed opening of the mixer.

Never put your hands into the feed opening of the mixer - danger of most serious injuries of your hands!

If strips are to be fed into the mixer, take care to always load same number and size of strips in order to obtain reproducibility.

Fill the material into the loading chute* while the blades are running.

Use the hinged pressure ram* for pressing the material completely into the mixer.

Weight the ram with the loading weight*.

7.3.2.3 Loading with the pneumatic loading chute*

Please also refer to the separate instruction manual of the pneumatic loading chute*.

The chute of the pneumatic loading chute* should be mounted only just before the test is started in order to prevent heating up of the pneumatic loading chute* in advance by radiation heat which would impede loading of the material into the mixer.

When mounting the pneumatic loading chute*, take c are to keep a sufficient distance of your hands to the feed opening of the mixer - danger of most serious injuries of your hands!

Fill the material into the feed hopper of the pneumatic loading chute* while the blades are running.

Actuate the two hand control device at the pneumatic loading chute* in order to lower the piston (max. pressure: 2.5 bars).

Always carefully observe the torque signal during this procedure.

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7.3.3 Checking the filling level of the mixer

Attention, residual danger: When the feed unit* is removed, the rotating mixer blades are no longer secured against access!

Never put your hands into the running mixer - dang er of most serious injury!

Reloading of material, if necessary, is only admis sible to be done by means of the loading chute* or pressure ram*.

Never use your hands for directly loading the mate rial into the mixer - danger of most serious injury!

When remounting the loading chute* or pressure ram * and during loading of material with the pressure ram*, always take care to keep a suffi cient distance of your hands to the feed opening of the mixer - danger of most serious injur y!

Never insert any objects into the running mixer - danger of destruction of the entire machine system!

Improper filling of the measuring mixer affects the reproducibility of the measuring results.

When the sample material has molten in the measuring mixer, remove the piston of the loading chute or the pressure ram*, and check the filling level as follows:

a) by looking into the mixer: The blades must be completely covered by the material, and the material layers must be compounded and shifted continuously from one blade to the other.

However, no material may emerge through the feed opening of the mixer!

b) by observing the torque curve: The optimum filling level is indicated by the material being in contact with the closing plunger of the loading chute* or pressure ram*. As soon as the plunger or the ram is removed, there should be an almost immediate decrease of the torque curve (which must, however, not exceed 1 ... 2 % max.).

For comparative tests with different materials, this decrease must always be the same!

No torque decrease at all indicates insufficient filling of the mixer. Excessive torque decrease (> 1 - 2 %) means overloading of the mixer.

If material samples are to be taken out of the mix er during the measurement, always stop the drive unit before! Danger of most serious injuries!


7.3.4 Test end and cleaning of the measuring mixer When the test has been completed or when the torque has passed the maximum in case of cross-linking (curing) materials, stop the drive unit in order to prevent unnecessary wear.

Remove the sample material immediately after the test.

Never leave any hardened material in the mixer while the blades are still running as this may damage the blades and the bearings.

Do not have the material cool down in the mixer b owl!

Sometimes, the mixer can only be emptied by drawing off the bowl while the blades are running.

Utmost care has to be taken when drawing off the m ixer bowl while the blades are running!

After having removed most of the material, completely clean the blades and the bowl when the blades have stopped (see detailed description in chapter 8).

Cleaning should be done as quickly as possible in order to prevent solidification of the material at the blades and in the mixer bowl!

After cleaning, correct temperature conditions must be created before starting a new test. The mixer temperature and the mixer bowl temperature (starting temperature) should be constant for 3 minutes. Before starting the next test, the loading device* (if any) must have cooled down to ambient temperature. Otherwise, the loading process may be impeded, particularly in case of powders with a low melting point.

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7.4 Evaluation of the test results

In many cases, the mixing process is stopped when stationary conditions have been reached, i.e. when the torque and the stock temperature curves have become nearly constant as a function of time. In case of curing or hardening materials, the process usually is not stopped before a second torque increase is observed or a second torque maximum has been passed (see also corresponding literature available from Brabender®).

7.4.1 Evaluation criteria 1. The starting temperature (= temperature signal of the stock temperature thermocouple) should have

remained constant for at least 3 minutes before the test material is fed into the mixer. Usually, this temperature is somewhat lower than the mixer temperature.

2. The material should be fed into the mixer as quickly as possible, preferably within 5...20 seconds (reproducible).

3. When stationary conditions have been reached, the stock temperature should be at least as high as the temperature of the mixer bowl (guiding value: stock temperature = mixer temperature + max. 20 °C at th e end of the test).

If the stock temperature is too low, this may indicate

• underfilling of the mixer, i.e. increase K to 0.75 or 0.8, and/or • insufficient blade speed.

Excess stock temperature may due to

• overloading of the mixer, or • excessive blade speed, or • unsuited blade geometry

4. A very large band width of the torque curve suggests insufficient damping. Excessive damping, however, impedes any additional evaluation of the torque curve, e.g. if slip additives were used for the test material.

5. A torque curve near to the zero line signifies that a wrong torque range was selected. In this case, select a smaller torque range, e.g. 0...100 Nm or smaller instead of 0...200 Nm.

7.4.2 Accuracy and reproducibility Brabender® measuring instruments are manufactured and calibrated according to the state of art. Nevertheless, failures after a long operation time cannot be excluded. Very often, such failures are promoted by insufficient maintenance and non-observance of the daily checks of the operating conditions. Failures of the heating / cooling system, the thermocouples, or the hoses, etc. may occur.

We therefore recommend to check the instrument system upon receipt under suitable test conditions (see above) by means of a reference material which is not sensitive to humidity and can be stored for a long time (e.g. high-molecular polyethylene). File the reference curves obtained from this test and run comparable tests after a certain operating time of the instrument, e.g. every three or six months.

Accuracy and reproducibility are influenced by:

• sample weight

• nature of the sample material (temperature, pellet size, pourability, moisture, etc.)

• heating / cooling of the measuring mixer

• cleanness of the mixer, operability of all system components

• speed

• wear of blades and bushings, cracking of heating / cooling oils, failure of heating cartridges

• observation of test specifications

Tests the results of which are to be compared with each other must run under identical test conditions.


8 MAINTENANCE

8.1 Cleaning

Risk of property damage!

Residual product which hardens or cross-links withi n the machine or instrument involves the risk of automatic speed limitation or motor shu t-down by the automatic torque limitation.

Humidity, in particular distilled water, or residue s of other aggressive products, cause wear such as abrasion and/or corrosion up to pitting.

IMPORTANT NOTE: All parts with product contact are wear parts, i.e. warranty for such parts is generally excluded!

� Empty the instrument or machine completely after ea ch test!

� Thoroughly clean all parts with product contact in regular time intervals or after each test, if necessary, depending on the product processed.

Particular care must be taken for clean and dry sea ling surfaces, angles, and grooves (e.g. with grooved screws*).

� Thoroughly dry all parts after cleaning!

� Never have any cross-linking material cool down or harden within the instrument or machine!

� Never leave any residues of aggressive products suc h as ceramics, distilled water, etc. within the instrument or machine for a prolonged ti me!

� During cleaning, take care for any signs of wear!

All surfaces contacting the sample material must be cleaned very thoroughly while they are still at operating temperature.

Always wear protective gloves when cleaning the in strument - danger of burning!

Never carry out any cleaning work while the blades are r otating - danger of most serious injuries!

After tests with materials that tend to stick to the mixer walls, a substitution with a highly stabilized PVC compound or with a high-molecular PE is recommended; for temperatures below 150°C, raw caoutchouc can also be used for this purpose.

After tests with materials that do not tend to stick to the walls, a substitution is not necessary.

Do not use any rigid or pointed tools for cleaning the blades and the mixer bowl. Only use suitable tools like brass brushes or bronze spatula for this purpose.

All parts that have been disassembled should be placed on wooden or other heat-resistant, non-metallic surfaces in order to avoid unnecessary loss of heat and mechanical damage to the parts.

Cleaning should be done as quickly as possible in order to prevent excessive cooling of the mixer bowl and of the blades.

The more time you take for cleaning, the more time you will need for adapting the mixer to the starting conditions of the previous test.


For opening the mixer, loosen the two hexagon socket screws on the front plate and open the swivel tie-bar.

Remove the front plate of the mixer.

Removal of the mixer bowl is facilitated by starting the drive unit* again. For doing so, press the two buttons of the two-hand control device at the drive unit.

Never put your hands into the running mixer - dang er of most serious injury!

By the rotation of the blades within the mixer bowl, the mixer bowl is slightly pushed off.

As soon as the mixer bowl can be drawn off, stop the drive unit*.

Carefully and uniformly draw off the mixer bowl with both your hands from the stud bolts and place it onto the deposit (available as accessory, ident no. 6 90 167) or any other suitable surface.

Cleaning of the mixer:

It is recommended always to clean the blades and the bushings first and only then the mixer bowl in order to keep loss of heat in the blades as low as possible.

All parts of the mixer should be polished with a clean piece of cloth after cleaning.

Blades

a) Remove the blades:

Removal of the blades is facilitated by a suitable blade extractor (additional equipment, ident no. 6 19 207 for series 30 and 50 roller blades).

• Loosen the left blade by turning it clockwise by approx. 30° and remove it.

• Loosen the right blades by turning it counter-clockwise by approx. 30° and remove it.

b) Thoroughly clean both blades with a brass brush and a brass spatula.

Rear wall and bushings

Thoroughly clean the rear wall and the bushings with a brass brush and a brass spatula.

Subsequently, immediately remount the blades in reverse order and lock them in order to avoid unnecessary loss of heat in the blades.

Mixer bowl

a) Thoroughly clean the mixer bowl with a brass spatula and a brass brush.

b) Immediately mount the clean mixer bowl onto the stud bolts again.

Front plate

a) Thoroughly clean the front plate with a brass spatula and a brass brush.

b) Immediately mount the clean front plate onto the stud bolts as well and lock it in order to avoid unnecessary loss of heat.

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After cleaning, correct temperature conditions must be created before the next test is started. Before starting the next test, the mixer temperature and the mixer bowl temperature (starting temperature, temperature signal of the stock temperature thermocouple) should have been constant for 3 min.

Before starting the next test, the loading device* (if any) must have cooled down to ambient temperature. Otherwise, the loading process may be impeded, particularly in case of powders with a low melting point.

Before starting a new test, check the form-fit connection of the measuring mixer to the drive unit*.

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8.2 Lubrication of the gear unit

In case of everyday use of the mixer, monthly lubrication of the mixer gear unit is recommended. The lubricant "Orapi CT 300" is available from Brabender (see list of accessories).

Before removing the cover of the gear unit, switch off the drive unit*!

Loosen the 3 hexagon socket screws at the protection hood and remove it.

Unscrew the 3 distance sleeves and take off the cover. Now the gear unit is accessible.

Use a paint brush for applying the lubricant "Orapi CT 300" onto the gears and bearings.

In order to ensure even lubrication of all parts, the drive unit* may be started temporarily at a low speed.

Never grasp into the mixer with your hands or inse rt any tools (paint brush, etc.) into the mixer while the blades are running! Danger of most serious injuries, danger of destruction of the entire system!

Remount the cover and the protective hood.

8.3 Exchange of bushings

When the bushings have worn, they must be replaced as follows.

Remove the protection hood from the gear unit.

Unlock the blades and remove them (see 8.1 point 6).

Loosen the two nuts of the stud bolts and remove the stud bolts together with the rear wall.

Loosen the clamping plate between the bushings (on the rear side of the mixer rear wall).

Remove the bushings.

Insert new bushings.

Reassemble the mixer in reverse order.

8.4 Abrasion check

In case of everyday use of the mixer, the mixer, blades, and the thermocouple have to be checked for abrasion once a year. For this purpose, run a test with a simple and reproducible reference material. The results of the abrasion checks must not deviate significantly from the reference curve.

Take care to run these tests under test conditions identical to those of the reference test. Apart from that, a maintenance contract can be made with the Brabender customer service.

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9 TROUBLE-SHOOTING

Failure: Cause: Repair:

Blades have got stuck. Bushings have been cleaned insufficiently.

Slowly rise mixer temperature up to max. value and start the mixer anew for releasing the blades.

Wrong display of mixer bowl temperature.

Position of the thermocouple is wrong.

Correct position of the thermocouple (it must penetrate 1...1.5 mm into the mixer bowl).

Thermocouple is worn. Replace the thermocouple.

Improper connection to the evaluation unit, evaluation unit defective.

Check all plug connections and cables and replace them, if necessary, check evaluation unit.

Excessive melt temperature as compared to the previous measurement.

Mixer was not heated through in the previous test.

Sample weight is too high.

Repeat the measurement.

Repeat the measurement.

Noise in the gear unit. Insufficient lubrication. Lubricate the gear unit.

Noise in the coupling. Occurs only under load and results from the coupling type.

No action required; possibly lubricate the coupling flanks with ORAPI CT 300.


10 ACCESSORIES

For handling and operating the instrument as well as for cleaning, useful accessories are supplied with the instrument (see accessories list). In case of loss or wear or wastage, the individual parts can be ordered like spare parts at any time.

11 SPARE PARTS

For all inquiries or orders of spare parts or additional equipment for Brabender test instruments, please always state the model number and the serial number of the instrument for which you require the respective spare parts or additional equipment (see spare parts list).

You will find these numbers on the name plates attached to each instrument.

Your order or inquiry cannot be handled without th ese numbers.

By additionally stating the order number under which you once received the corresponding instrument from Brabender, you can facilitate handling of your order/inquiry even more.

All instruments ever supplied by Brabender are registered in a file. They can, however, only be allocated with the help of these numbers.

Spare parts can be ordered from Brabender directly or from any local Brabender representative.

12 ANNEX

Lists: Accessories

Spare parts

Supplementary modules

Additional equipment

Drawings, wiring diagrams

Please also observe the separate instruction manuals for the other instruments working together in a system.


Accessories for

Measuring mixers type 30 EHT for Plastograph ® EC/EC Plus

Qty. Ident no. Description

1 2 11 076 grease "ORAPI CT 300" (50-g tin)

1 6 19 305 round cleaning brush ∅ 25 mm

1 2 97 097 brass wire brush

1 2 97 860 hexagon socket head wrench size 8

1 2 97 590 bronze spatula

1 2 97 122 round brush

3 6 73 289 control thermocouple with 3000 mm connecting cable

1 6 74 252 stock temperature thermocouple


Spare parts for


Ident no. Description

6 94 241.002 roller blade, short, 1.4312 (for mixer type 30)

6 94 240.001 roller blade, long, 1.4312 (for mixer type 30)

6 94 237.002 roller blade, short, 1.8519 (for mixer type 30)

6 94 236.001 roller blade, long, 1.8519 (for mixer type 30)

6 94 234.005 MB blade, short, 1.8519 (for mixer type 30)

6 94 235.002 MB blade, long, 1.8519 (for mixer type 30)

4 06 260.015 bushings made of steel/TiN (for standard EHT-mixer)

4 06 260.016 bushings made of steel/TiN (special, for max. 250°C)

2 14 102 O-ring 19 * 1.8 Viton

2 90 006 inner ring A 6075

2 90 007 tapered ring A 6157

4 97 239.001 helical gear wheel Z = 18 (for i = 2 : 3/3 : 2)

4 97 240.001 helical gear wheel Z = 27 (for i = 2 : 3/3 : 2)

4 97 285.001 helical gear wheel Z = 20 (for i = 1 : 1.11)

4 97 286.001 helical gear wheel Z = 22 (for i = 1 : 1.11)

4 19 242 feather key 6.7 * 5 * 26.6 with round face (for blades)

4 19 242.001 feather key 6.7 * 5 * 26.6 with straight face (for gear wheels)

2 28 111 heating cartridge 8 * 60 mm, 350 W (mixer bowl)

2 28 088 heating cartridge 10 * 130 mm, 800 W (rear wall, bottom)

2 28 026 heating cartridge 10 * 100 mm, 560 W (front and rear wall)


Supplementary modules for


Ident no. Description

6 28 205 pressure ram, complete (for mixers type 30 EHT)

6 28 217 pressure ram with bore for metering pumps (for mixers type 30 EHT)

6 28 208 sealing cover with 2 valves

6 28 364.001 pneumatic loading chute (for mixers type 30 EHT)

6 77 258.002 quick loading chute, complete (for mixers type 30 EHT)

2 97 930 quick loading chute USA (for mixers type 30 EHT), complete with support

6 14 305 support for quick loading chute USA, complete (for mixers type 30 EHT)

4 79 123 loading weight 5 kg

6 19 207 Blade extractor for roller blades type 30/50

835204-006 Kneter-W30-EHT BA-00-e - Brabender · PDF fileEdition 0712 Instruction Manual No....

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