Manual Knife Mill GM 300 Translation © Retsch GmbH, 42781 Haan, Retsch-Allee 1-5, Germany 12.11.
Copyright © Copyright by Retsch GmbH Haan, Retsch-Allee 1-5 D-42781 Haan Federal Republic of Germany 2
1 Notes on the Operating Manual ............................................................................................................ 5 1.1 Explanations of the safety warnings .................................................................................................. 6 1.2 General safety instructions ................................................................................................................ 7 1.3 Repairs................................................................
5.9 Starting the grinding process ........................................................................................................... 25 5.10 Interrupting and continuing the grinding process ............................................................................ 25 5.11 Stopping the grinding process ......................................................................................................... 25 5.12 Menu structure ..............................................................
Notes on the Operating Manual 1 Notes on the Operating Manual 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.
Notes on the Operating Manual 1.1 Explanations of the safety warnings 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. WARNING Type of danger / personal injury Source of danger – Possible consequences if the dangers are not observed. • Instructions on how the dangers are to be avoided.
Notes on the Operating Manual 1.2 General safety instructions CAUTION Read the Operating Manual 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.
Notes on the Operating Manual Reperatur en 1.3 Repairs 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.
Confirmation Bes tätigung 2 Confirmation 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.
Transport, scope of delivery, installation 3 Transport, scope of delivery, installation 3.1 Packaging The packaging has been adapted to the mode of transport. It complies with the generally applicable packaging guidelines. NOTICE Storage of packaging 3.2 – In the event of a complaint or return, your warranty claims may be endangered if the packaging is inadequate or the machine has not been secured correctly. • Please keep the packaging for the duration of the warranty period.
Transport, scope of delivery, installation NOTICE Atmospheric humidity 3.5 – Electronic and mechanical components may be damaged and the performance data alter to an unknown extent. • Do not exceed the admissible range for atmospheric humidity. Removing the transport safeguard Remove the cardboard cross, which serves to protect the knives during transport), from the inside of the grinding jar. 3.
Transport, scope of delivery, installation 1 Device designation 2 Year of production 3 Part number 4 Serial number 5 Manufacturer’s address 6 CE marking 7 Disposal label 8 Bar code 9 Power version 10 Mains frequency 11 Capacity 12 Amperage 13 Number of fuses 14 Fuse type and fuse strength In the case of questions please provide the device designation (1) or the part number (3) and the serial number (4) of the device.
Technical data 4 Technical data 4.1 Use of the machine for the intended purpose Target group: Operators Machine type designation: GM 300 The GRINDOMIX GM 300 laboratory knife mill serves to mill, homogenise and mix soft to medium-hard, aqueous, fatty, fibrous and dry materials within seconds so that they will be suitable for analysis. It can process sample volumes of up to 4.5 litres quickly and reproducibly. The GRINDOMIX GM 300 is designed for quantities up to approx.
Technical data The device can be started only if the housing cover is closed and can be opened only if the motor has stopped completely. The actual speed is displayed during operation. The safety device checks that the grinding jar and cover are in place before the grinding process can be started. If the speed deviates by more than 15 %, the device will switch off automatically. 4.
Technical data 4.5 Drive output 3-phase asynchronous motor with frequency converter 4.6 Rated power Continuous duty 1.5 KW, peak performance 3 kW 4.7 Rated voltage – 4.8 220 - 230 V 50 / 60Hz + 0,1Hz Rotation speed The knife speedcan be set in 100-rpm steps from 500 to 4000 rpm. 4.9 4.9.1 Dimensions and weight Height with Hood Cover Closed Height: 340 mm Width: 440 mm Depth: 440 mm 4.9.2 Height with Hood Cover Open Height: 700 mm Width: 440 mm Depth: 430 mm 4.9.3 Weight approx. 30 kg 4.
Operating the machine 5 Operating the machine 5.1 Views of the Instrument 0 A B F G C H D I J E Fig. 2: Front view A B C H N L M O K Fig.
Operating the machine P Q E W X Fig. 4: Detailed views of housing R S Fig. 5: Detail of grinding jar disassembly 5.
Operating the machine F G H I J Fig.
Operating the machine 5.
Operating the machine 5.4 Switching On and Off • Switch on the mill by pressing the ON/OFF switch (M) at the back. When the GM300 is switched on for the first time, the language menu is displayed. You can select your national language here by turning the operating knob (G). Pressing this knob confirms the selection and the display shows “Open Lid”. 5.5 Opening and closing of the grinding chamber • Press the (J) key. The electromagnetic safety interlock opens and the flap can be folded back.
Operating the machine Fig. 7: Recessed grips on the knife Fig. 8: Removing the knife– Fill level of the grinding jar Note that the knife must be inserted before filling the grinding jar. The knife is placed on the shaft and held by magnetic force . The sealing lip (DL) of the V ring seal (V) must point downwards when inserted. (See Fig. for knife assembly) NOTICE • Remove the knife after the grinding process.
Operating the machine V DL Fig. 9: Inserting the sealing ring 1. 2. 3. Fig. 10: Preparing the knife and grinding jar, inserting the knife NOTE • Check the state of the V-ring seal (V) regularly. – The bottom edge of the lip seal (DL) must be clean and smooth. • Replace the V-ring seal when the lip seal is brittle, cracked, frayed or damaged in order to prevent rust and damage to the cutter bearing. (V-ring seal part number: 05.111.0243) 5.
Operating the machine 2. Use the face spanner (SL) to mount the knife dome and the bearing flange in the grinding jar. (see diagram below) NOTE Before inserting the grinding jar, it is essential to ensure that the bearing flange and the knife dome are positioned securely. If necessary, tighten the bearing flange with the face spanner (SL). SL Fig. 11: Use a face spanner to remove the knife dome 3. Put the knife in the grinding jar on the knife dome and let the knife lock into place. 4.
Operating the machine 4. 5. 6. Fig. 12: Inserting the grinding jar and closing the device. 5.7.1 Grinding container - use with different materials The material properties specified refer to samples from the main area of applications: food or animal fodder The plastic grinding jar is less suitable for dry, tough or fibrous samples. Stainless steel is recommended for these samples as well as all others from the specified field of applications. 5.
Operating the machine Fig. 13: Use of one or two sealing rings NOTE Thin fluid samples should be started at a low speed. Increase the speed gradually. The maximum speed for liquid samples may not exceed 2,500 revolutions per minute. 5.9 Starting the grinding process Set the grinding parameters you wish to have. Insert the grinding jar with the material to be ground, the knife and the lid. Close the flap until the electromechanical safety interlock is closed. Press the START (H) key. 5.
Operating the machine • Press the STOP key (I) twice. The grinding process is stopped (end). The grinding parameters are reset to the previously set or stored values. 5.12 Menu structure This device offers new, very user-friendly prompting. All relevant data can be entered into or called up on a graphic display with one-button operation. The menu instructions are multi-lingual. 5.12.
Operating the machine 1st level Manual operation 2nd level Sequeces 01 to 10 (Press knob and turn to the left) (Turn knob to the right) 3rd level 4th level 5th level Automatic opening On / off Warning tone On / off Service Operating hours Total operating hours xxxxx.xx.xx hh:mm:ss Operating software Operating software Version: xyz Update Yes/cancel 6th level 1 Grinding program 01 tos 10 Grinding duration Grinding duration [1sec.
Operating the machine P01 Sequences 01 P01 P01+P02 Sequences 02 P02 P01+P02+P03 Sequences 03 P03 P01+P02+P03+P04 Sequences 04 P04 P01+P02+P03+P04+P05 Sequences 05 P05 P01+P02+P03+P04+P05+P06 Sequences 06 P06 P01+P02+P03+P04+P05+P06+P07 Sequences 07 P07 P01+P02+P03+P04+P05+P06+P07+P08 Sequences 08 P01+P02+P03+P04+P05+P06+P07+P08+P09 Sequences 09 P09 P01+P02+P03+P04+P05+P06+P07+P08+P09+P10 Sequences 10 P10 Sequences Program P08 5.
Operating the machine Fig. 14: Maximum speed for runny liquid samples 5.15 Setting the Direction of Rotation • Turn the rotary knob to reach the direction of rotation menu item. The selected menu item is highlighted by the dark selection bar. • 1. Press the rotary knob to set the direction of rotation. • Turn the rotary knob until you reach the desired direction of rotation. Direction of rotation (knife beating)) Direction of rotation (knife cutting) • 2.
Operating the machine CAUTION Emergency Unlocking Drive continuing to run – There is a substantial risk of injury if the drive and associated device parts run on a long time without being braked! • Activate the emergency unlocking only when the machine has come to a complete stop and is disconnected from the power supply. NE Fig. 15: View of the back NE Fig. 16: Emergency unlocking of flap The GM300 can be opened manually during a power failure.
Working instructions 6 Working instructions Four sharp, sturdy blades rotate in the centre of the grinding container. Depending on the direction of rotation, cutting is done with the blunt side (preliminary size reduction) or with the sharp side (fine size reduction). To protect the knife from damage from hard material, the knife are equipped with a counterblade. The powerful industrial motor with 1500 watts in continuous duty or 3000 watts in brief peak performance drives the knife indirectly.
Cleaning and service 8 Cleaning and service Autoclavable and dishwasher-safe Not autoclavable Dishwasher-safe Autoclavable and dishwasher-safe Fig. 17: Autoclavable and dishwasher-safe components and exceptions Dishwasher safe Fig. 18: Dishwasher safe components NOTICE • Dry all metallic parts of the grinding jar and the knife after drying to prevent possible corrosion.
Cleaning and service Under certain conditions there may be corrosion on metallic parts. This is not a quality defect and can occur despite best material quality. Fig.19: Protective oxide layer The resistance of “stainless” steel is attributable to an extremely thin invisible protective oxide layer (S), the so-called passive layer. Since the grinding tool surfaces are exposed to mechanical load, small areas of corrosion (K) may appear after this protective oxide layer has been damaged.
Accessories 9 Accessories NOTE The use of the gravity lid reduces the possible filling capacity of the grinding jar by 5 cm under the edge of the jar. This corresponds to a filling capacity of 3.5 litres. SD Fig. 21: Engaging the gravity lid in the securing recess Pull the handle upwards before inserting the gravity lid. Turn the gravity lid to engage the lid (SD). Put the gravity lid onto the grinding jar. Insert the grinding jar with gravity lid into the device.
Disposal 10 Disposal Please observe the respective statutory requirements with respect to disposal. Information on disposal of electrical and electronic machines in the European Community. Within the European Community the disposal of electrically operated devices is regulated by national provisions that are based on the EU Directive 2002/96/EC on Waste Electrical and Electronic Equipment (WEEE). Accordingly, all machines supplied after 13.08.
11 Index ( (CO2) ...................................................................22 A Accessories ........................................................34 Amperage ...........................................................12 Atmospheric humidity .........................................10 Autoclavable components...................................32 B Bar code .............................................................12 beating ..........................................................
K Required floor space .......................................... 15 Knife Speed ........................................................15 Revmoving the knife – fill level of the grinding jar ....................................................................... 21 M Rotation speed ................................................... 15 Magnetic force ....................................................21 rpm ..................................................................... 15 Mains frequency .
U W Use of the machine for the intended purpose ....13 Watery sample ................................................... 24 V Weight ................................................................ 15 ventilation properties ...........................................22 Working instructions........................................... 31 View of the back .................................................30 Y Views of the Instrument ......................................16 Year of production..........
CERTIFICATE OF CE-CONFORMITY Translation LABORATORY KNIFE MILL GM 300 - GRINDOMIX Certificate of CE-Conformity according to: EC Mechanical Engineering Directive 2006/42/EC Applied harmonized standards, in particular: DIN EN ISO 12100 Security of machines DIN EN ISO 12852 Food processors and blenders DIN EN 954-1 Safety related parts of control systems EC Directive Electromagnetic Compatibility 2004/108/EC Applied standards, in particular: DIN EN 55011 B / Generic standard interference emission - living ar
Copyright ® Copyright by Retsch GmbH Haan, Retsch-Allee 1-5 D-42781 Haan Federal Republic of Germany
