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3. Description

3.1 Intended use

The W 200 II surface grinding machine grinds mincing plates and knives with a diameter of up to
200 mm.

3.2 Technical specifications

Height (maximum when lever is at top) �� approx. 1950 mm

Width (incl. suction unit) �� approx. 1263 mm

Depth (maximum, when lever is in forward position) �� approx. 980 mm

Weight �� approx. 320 kg

Weight (incl. suction unit) �� approx. 400 kg

Current supply* �� 3x 400 V

Mains frequency* �� 50 Hz

Output* �� 3.5 kW

Power consumption* �� 6 kW

Energy consumption* �� 7 A

Back-up fuse �� 16 A

Measured A-evaluated emission sound pressure level �� 78 dB (A)
at workstation LpA**

Rotary table diameter �� 200 mm

Rotary table speed �� 53 1 / min

Grinding wheel diameter �� 100 mm

Grinding wheel speed �� 4500 1 / min

Cutting speed with grinding wheel d.100*** �� 24 m / s

*) This information may change depending on the electrical power supply.
**) Sound emission value according to EN ISO 11202 (measurement uncertainty KpA 2.5 dB(A)).
***) Beware! The cutting speed of 24 m / s is reached at 50 Hz. An electrical supply with a higher frequency

results in higher cutting speeds. Only approved abrasives may be used.

A mincing plate with a diameter of 200 mm was ground.

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Содержание W 200 II

Страница 1: ...Status 11 2019 Version 1 1 Translation Operating Instructions Surface Grinding Machine W 200 II ...

Страница 2: ... issue of the operating instructions November 13 2019 Copyright The copyright for these operating instructions as well as other documents for the machine operator is held by KNECHT Maschinenbau GmbH They are provided only to customers and operators of our products and are included with the machine These documents may neither be reproduced nor made accessible to third parties in particular rival fi...

Страница 3: ...ended use 11 2 3 Warranty and liability 11 2 4 Safety regulations 12 2 4 1 Organizational measures 12 2 4 2 Protective equipment 12 2 4 3 Informal safety measures 12 2 4 4 Selection and qualification of personnel 12 2 4 5 Machine control system 13 2 4 6 Safety measures in normal operation 13 2 4 7 Hazards due to electrical power sources 13 2 4 8 Particular hazard zones 13 2 4 9 Servicing maintenan...

Страница 4: ...achine 26 7 2 Rotary table 26 7 3 Grinding unit control lever 26 7 4 Workpiece mounting with centering piece 27 7 5 Determining working position 28 7 6 Configuring the coolant supply 29 7 7 Grinding mincing plates 30 7 8 Surface grinding mincing knives 32 7 9 Changing the CBN grinding wheel 34 8 Care and maintenance 35 8 1 Coolant additive 35 8 1 1 Cooling lubricant maintenance plan 35 8 2 Lubrica...

Страница 5: ...ice spare parts and accessories 38 10 1 Postal address 38 10 2 Service 38 10 3 Spare parts 38 10 4 Accessories 39 10 4 1 Grinding wheels used 39 11 Annex 40 11 1 EC Declaration of Conformity 40 Table of Contents ...

Страница 6: ...missioning operation including fault elimination in the process flow as well as upkeep maintenance repair In addition to the operating instructions and the binding accident prevention regulations applicable in the country and place of use of the machine the generally acknowledged rules of technology with regard to safe and professional work practices are to be observed 1 2 Warnings and symbols in ...

Страница 7: ... mains supply before carrying out servicing maintenance and repair work on it CAUTION RISK OF INJURY FROM ABRASIVE PARTICLES mandatory sign on the front plate Grinding and dressing gives rise to grinding particles which could enter the eyes Wearing protective goggles is mandatory when carrying out such work 1 3 2 General mandatory signs The following general mandatory signs must be followed CAUTIO...

Страница 8: ...xt which is depicted in an image the figure and item number will be given in parentheses Example 7 5 1 means Figure number 7 5 item 1 The workpieces are mounted and correctly aligned on the rotary table by means of centering pieces 7 5 1 and the follower 7 5 2 The corresponding centering piece is placed in the bore at the center of the rotary table The follower is used to attach smaller workpieces...

Страница 9: ...ad and understood the operating instructions in particular the section entitled Safety and the warning notes and have provided signed confirmation of this The safety related work of personnel will be monitored at regular intervals 2 1 3 Obligation on the part of the personnel All personnel working on the grinding machine shall be obliged before starting work to observe basic occupational safety an...

Страница 10: ...includes the observance of all the notes in the operating instructions The grinding machine is being used improperly if for example fixtures are not properly attached workpieces other than mincing plates and knives are being ground 2 3 Warranty and liability Warranty and liability claims in case of personal injury or property damage are excluded if such damage is attributable to one or more of the...

Страница 11: ...lied the protective equipment must be attached by the operator as stipulated 2 4 3 Informal safety measures The operating instructions must be permanently available at the place of use of the grinding machine In addition to the operating instructions the generally applicable as well as the locally relevant accident prevention regulations must also be made available and observed All safety alert sy...

Страница 12: ...mmediately 2 4 7 Hazards due to electrical power sources Work on electrical systems or operating materials may only be performed by a qualified electri cian in accordance with electrical regulations Defects such as damaged cables cable connections etc must be rectified immediately by an authorized specialist Cables marked in yellow are electrically live even when the main switch is in the off posi...

Страница 13: ... environmentally friendly manner 2 4 12 Oils and greases When using lubricants and grease follow the safety provisions applicable to the product Comply with the special regulations for the foodstuffs sector 2 4 13 Relocation of the grinding machine Disconnect the grinding machine from any external power even if adjusting its position slightly Before restarting the grinding machine properly connect...

Страница 14: ...W Energy consumption 7 A Back up fuse 16 A Measured A evaluated emission sound pressure level 78 dB A at workstation LpA Rotary table diameter 200 mm Rotary table speed 53 1 min Grinding wheel diameter 100 mm Grinding wheel speed 4500 1 min Cutting speed with grinding wheel d 100 24 m s This information may change depending on the electrical power supply Sound emission value according to EN ISO 11...

Страница 15: ...ne by means of centering pieces and followers For the purpose of surface grinding mincing knives are attached to a mincing plate using the centering piece for knives included Special mounts are available for unusual applications The machine is supplied as standard with CBN grinding wheels The W 200 II is optionally supplied with an air purification system referred to in the following as the suctio...

Страница 16: ...iption of modules 1 Protective door 2 Stainless steel table 3 Suction unit optional 4 Control lever Grinding unit 5 Control panel 6 Coolant unit 7 Adjustable machine feet 2 1 3 5 7 6 4 Figure 3 2 General view of grinding machine ...

Страница 17: ...18 3 Description Figure 3 3 Interior 1 Grinding unit 2 Coolant hose 3 Grinding unit stop 4 Locking pin 5 LED work light 2 3 5 1 4 ...

Страница 18: ...ntrol panel of the PLC control The mechanical components are operated using the control buttons and switches 1 Grinding wheel On Off button Switch grinding wheel on off 2 Rotary table On Off button Switch rota ry table movement on off 3 Coolant On Off button Switch coolant pump on off 4 Control ON button Activate PLC control 5 Drives On Off button Switch drives for grinding wheel rotary table cool...

Страница 19: ...unit The coolant unit is located in the base of the machine During grinding the workpiece has to be perma nently cooled For this purpose put approx 35 liters of water with coolant additive into the water tank Figure 3 6 Coolant unit ...

Страница 20: ...after unloading when receiving a delivery notify KNECHT Maschinenbau GmbH and the forwarding agent immediately Refer directly to an independent specialist as needed Remove the packaging and shipping straps Remove the shipping straps on the grinding machine Dispose of packaging in an environment friendly manner 4 3 Transport to another installation site For transport to another installation site en...

Страница 21: ...lation maintenance and repair work when determining the location at which to set up the grinding machine 5 3 Supply connections The grinding machine is provided with the corresponding connection cable Confirm that the machine is correctly connected to the current supply CAUTION 5 4 Settings KNECHT Maschinenbau GmbH will configure the various components as well as the electrical system before deliv...

Страница 22: ... Adjust the machine feet to compensate for unevenness in the floor Have an authorized electrician install the current supply on site Completely install and inspect the protective equipment before commissioning Be sure to have all the safety devices checked by trained personnel before commissioning CAUTION 5 Installation ...

Страница 23: ...of water incl coolant additive For information on coolant additive see Chapter 8 1 The discharge 6 2 1 must be set up so that waste water can flow into the sieve basket The sieve basket is attached by means of recesses Connect power plugs CEE plugs to the on site outlet 3x 400 V 32 A and set main switch to I 6 Commissioning Figure 6 1 Filling the coolant unit Figure 6 2 Adjusting the discharge 1 ...

Страница 24: ... the rotary table and grinding wheel are moving Change by means of the pole changer plug if necessary ATTENTION If the connection is incorrect the grinding wheel and rotary table can rotate in the reverse of the prescribed direction The wrong direction of rotation can lead to the grinding wheel becoming loose When commissioning always check the rota tional direction of the rotary table first The r...

Страница 25: ...is used to feed the grinding unit In order to achieve a fast feed the control lever is pressed upwards and pulled forward The control level first has to be electromechanically released For this purpose press the button 7 3 1 at the tip of the control lever Once the desired position has been reached release the button The control lever is electromechanically locked once again For the fine feed acti...

Страница 26: ...this lock the grinding unit once again The workpieces are mounted and correctly aligned on the rotary table by means of centering pieces 7 5 1 and the follower 7 5 2 The correspond ing centering piece is placed in the bore at the center of the rotary table The follower is used to attach smaller workpieces on the rotary table 7 Operation Figure 7 4 Moving the grinding unit into the change position ...

Страница 27: ...ion of the grinding unit as follows unscrew the stop 7 7 1 and pull the slide for ward across the workpiece using the handle 7 7 2 until the working position is reached After this lock the grinding unit once again NOTICE For fine alignment turn the stop handle 7 4 1 by 180 ATTENTION When grinding mincing knives make sure that the grinding wheel does not touch the knife collar 7 Operation Figure 7 ...

Страница 28: ... is throttled by turning the coolant tap clockwise Turning it counterclock wise opens the coolant tap and thus the coolant supply The coolant hose 7 8 2 is flexible and must be configured so that the coolant flows directly onto the workpiece ATTENTION When grinding make sure that the work piece is always provided with sufficient coolant otherwise the workpiece may over heat thus damaging the metal...

Страница 29: ...ump and suction unit by pressing the Drive On Off button 3 5 5 ATTENTION The machine is electrically secured All units apart from the coolant pump can only be switched on when the protective door is closed To grind feed the grinding unit using the fine feed 7 11 1 at the tip of the control level until sparks are clearly visible Allow the machine to operate without further feed until the sparks die...

Страница 30: ...31 7 Operation The mincing plate can now be removed and ground on the back In order to ensure consistent quality the proce dure is completed by grinding the first side once again ...

Страница 31: ... working position as described in Chapter 7 4 When grinding mincing knives make sure that the grinding wheel does not touch the knife collar The position of the rotary table can be set precise ly using the stop 7 13 1 NOTICE For fine alignment turn the stop handle 7 13 1 by 180 Use the Grinding unit 7 14 1 control lever on the right hand side of the machine to bring down the grinding unit until it...

Страница 32: ... until the sparks die away Feed again until the mincing knife is evenly surface ground In order to achieve good surface quality apply slightly less pressure for approx 10 seconds after the last feed using the fine feed After grinding run the grinding unit upwards us ing the control lever 7 15 1 until the drive stops automatically The mincing knife can now be removed and ground on the back In order...

Страница 33: ...le NOTICE Only abrasives recommended by KNECHT should be used in order to ensure optimum operation Take care to ensure that the locking pin is re leased and removed before switching the ma chine on briefly rotate the wheel by hand For all work on the grinding machine the locally applicable safety and accident prevention regulations as well as instructions in the Safety and Important notes section ...

Страница 34: ...oncentration and if necessary top up with cooling lubricant Check cooling lubricant concentration weekly Cooling lubricant Colometa SBF PN Refractometer Brix 3 5 Date BRIX Conc Remarks etc Signature The value read off in Brix multiplied by 1 8 is the concentration in The concentration must always be between 3 5 Brix corresponds to a concentration of 5 9 Check the odor and appearance of the cooling...

Страница 35: ...hould be lubricated with fluid grease every four weeks Lubricate the control lever with fluid grease as necessary 8 2 Lubrication schedule and lubricant table Lubrication work Cycle OEST SHELL EXXON Mobil Ball bearing guide 4 weeks LT 0000 EP Rentiax CSZ Oil machine parts after cleaning After each grinding Paraffinum Perliquidum 16 L Shell Risella 917 Marcol 82 8 3 Cleaning Clean the machine after...

Страница 36: ...ucted by qualified trained personnel 9 2 Disposal After the machine has reached the end of its service life it must be disposed of by qualified trained personnel In certain situations and after consultation with KNECHT Maschinenbau GmbH the machine may be returned Operating materials e g grinding wheels coolants etc must also be disposed of correctly ...

Страница 37: ...u are in need of spare parts please use the spare parts list provided with the machine Please make your order using the format provided in the following When ordering please always provide Example Machine type W200II Machine serial number 101156200 Designation of assembly motor carriage left Designation of individual part guide carriage Item no 09 Drawing no 405L 08 0426 Quantity 1 We are always h...

Страница 38: ...0 412F 73 0106 Standard NOTICE Do not use any other abrasives without the approval of KNECHT Maschinenbau GmbH KNECHT Maschinenbau GmbH does not accept any liability if other grinding wheels are used If you require grinding wheels or other accessories please contact our sales staff dealers or KNECHT Maschinenbau GmbH directly Thank you for choosing KNECHT ...

Страница 39: ...claration shall no longer be valid Designation of the machine Surface Grinding Machine Model designation W 200 II Applicable harmonized standards DIN EN 12100 1 especially DIN EN 12100 2 DIN EN 60204 1 ISO 13857 DIN EN 349 Responsible for documentation Peter Heine B Eng Mechanical Engineering BA Tel 49 7527 928 15 Manufacturer KNECHT Maschinenbau GmbH Witschwender Straße 26 88368 Bergatreute Germa...

Страница 40: ...KNECHT Maschinenbau GmbH Witschwender Straße 26 88368 Bergatreute Germany T 49 7527 928 0 F 49 7527 928 32 mail knecht eu www knecht eu ...

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