Operating Instructions - John Morris Scientific
Contents
1. 3 Slowly open the housing upper section fully 4 Screw the rod of the press plunger to the right of the funnel fully out of the plunger at the same time push the press plunger out to the left 5 Grip the press plunger from the left and pull it out The press plunger and the interior of the funnel can then be cleaned During reassembly ensur that all the parts fit securely pulverisette 19 pulverisette 25 page 18 FRITSCH ar Eg 5 1 Cleaning the Exhaust system Sample exhauster with cyclone dust chamber The exhaust system can be dismantled and cleaned after the clips are opened To open and clean the cyclone two Phillips screws in the inner base part must be undone 6 Maintenance Disconnect mains connector before starting any work Disconnect mains connector and secure instrument against being turned on again accidentally When maintenance work is being performed this should be indicated with a warning sign Regular cleaning is the most important maintenance function for the cutting mill Functional Task Test Maintenance part interval Filter of the Filtering exhaust Clean the filter insert C as Before each cutting mill air described above lever it out inan grinding upwards direction with a operation screwdriver or similar tool Safety lock Locking the Check that the closure hatch Before each use closure hatch remains shut when the main switch is o2. Lifting the machine down will require at least two persons Fastening the Cutting Mill Screw the cutting mill onto the frame supplied or onto a stable bench etc e Unscrew the oval head screws on the housing and remove the housing see right e Two U shaped rails are fitted on the bottom of the machine Pass the attached screws through the holes drilled in the U shaped rails and screw them into the frame or the bench Other screws of the same diameter may also be used Please ensure that the machine is fastened securely as N sy considerable transverse forces do occur Ensure that there is good access to the cutting mill Ensure that to the right of the mill there is sufficient space for the housing upper section including the funnel to be opened Do not block the ventilation louver at the rear There is a danger of overheating if the louver is blocked pulverisette 19 pulverisette 25 page 8 FRITSCH 3 4 Ambience conditions e Use the instrument only inside The air must not contain any electrical conductive dust The ambient temperature must be between 5 and 40 C Height up to 2000m M S L Maximum relative humidity of air 80 temperature up to 31 C linear decreasing down to 50 relative humidity of air at 40 C e Contamination level 2 IEC 664 3 5 Electrical Connection Before making the connection compare the voltage and current values shown on the namepl
3. pulverisette 19 pulverisette 25 page 1 FRITSCH 1 2 Explanations of the signs at the instrument and in the operating instructions Attention warning against danger spot observe operating instructions Attention mains voltage Attention risk of explosion Attention hot surface Attention inflammable substances wear protective gloves wear ear protectors 1 3 Brief Description of the Instrument 1 3 1 Applications The cutting mill can be used for rapid comminution of soft to medium hard and fibrous materials such as sheet rubber plastics iron free refuse confectionery dried meat leather wood coal malt paper cardboard peat animal feed pasta tablets sheets pellets spices fabric straw maize bone roots tobacco pulverisette 19 pulverisette 25 page 2 1 4 FRITSCH ar Mg 1 3 2 Method of Operation The material is fed via a feed funnel 6 into the cutting chamber There the material is cut by rotating knives 1 in cooperation with stationary knives 2 The fine material falls through a sieve cassette 3 into a collecting basin 5 1 3 3 Drive Motor Universal cutting mill p 19 Power cutting mill p 25 The machine is driven by a The p 25 is driven by a three three phase a c motor or an phase a c gear motor with no a c motor with a built in mechanical brake mechanical brake Technical Data Dim
4. feed grain size and the grindability of the material It is best to start with small quantities and increase the quantity depending on the success of the grinding process pulverisette 19 pulverisette 25 page 17 FRITSCH mm AM When the collecting glass is 2 3 full grinding must be interrupted switch off the cutting mill and the cyclone and the collecting glass emptied If grinding is not interrupted when the collecting glass is 2 3 full the separator effect will decrease and the material will increasingly clog the filter of the exhaust system If the ground material eddying in the collecting glass slowes down this means that the air throughflow or the air speed has decreased e the sieve must be cleaned and or e the filter of the exhaust system must be cleaned The fine fraction fine dust of the sample is deposited in the filter of the exhaust system Clean the filter from time to time by suction or blowing The exhaust system is especially recommended in combination with the combination funnel for long and bulk solids 5 Cleaning When disconnected from mains the instrument can be wiped over with a moistened cloth It is recommended that the cutting chamber be cleaned with a vacuum cleaner and dry paint brush or by blowing out with compressed air Do not allow any liquids to seep into the machine 1 Unscrew the rubber buffer A 2 Open the closure hatch and pull it upwards to detach it
5. nresnrvnavrnavnnnsnnnsnnnnnnnnnnnnnnnnvnnenenennnennnennnnn OE 19 7 Warrantyesareesasesaanesanerananernanernnnernnasrnnenennoneneneernnener e ERRERERERERERE 20 8 Troubleshooting Checklist 20 9 List of Keywords ananerananennnnanennnannennnnnenenenernnnnnenn FRR 21 pulverisette 19 pulverisette 25 FRITSCH ar Eg 1 General Information Introduction 1 1 Notes about Operating Instructions e The copyright to these technical documents is the property of Fritsch GmbH Manufacturers of Laboratory Instruments e These operating instructions are not to be reprinted or copied without the express approval of Fritsch GmbH e Please study these instructions carefully before attempting to operate the machine e All operators must be familiar with the contents of the operating instructions e Please observe all notes concerning your safety e The cutting mill was designed with the user s safety in mind however inherent risks cannot be excluded Follow the advice in these instructions to avoid risks to users The symbols in the right hand margin highlight the risks described in the text Symbols are also to be found on the instrument warning users of possible risks Warning symbols are surrounded by a triangle e These operating instructions do not constitute a complete technical description They describe only the details required for safe operation and maintenance for usage under normal conditions
6. safety lock must be activated by turning the triangular wrench 4 anticlockwise the closure hatch must be closed and the toggle type fastener A thrown to fix the closure hatch pulverisette 19 pulverisette 25 page 6 2 4 2 5 FRITSCH ar Eg Danger Points e First open the closure hatch 1 st fully and then open the housing upper section 2nd An initial resistance will be felt when the housing upper section is being opened e Ensure that the closure hatch does not swing round violently GR and consequently drop out of the hinges er ON e There is a danger of crushing when the housing upper section EE is being closed see right for this reason the housing upper amp section should be closed slowly Ke e When opening the housing upper section slowly open it until it is resting on the rubber buffer A Do not let it drop down violently e After checking that the rotor section 4 2 3 Technical Data rotates freely the Allen key must be removed immediately Electrical Safety General e Press the STOP button the cutting mill will slow down and stop e Switch off the main switch when the cutting mill is inoperative for an extended period e g over night Protection against Restarting In the event of a mains failure during operation or after the machine has been switched off with the main switch the closure hatch will remain locked When the mains voltage
7. 5 The switch see image 1 must be set to the H position with a screwdriver see image 2 pulverisette 19 pulverisette 25 page 16 FRITSCH i Mi Image 2 For fine grinding or material with dust creation the exhaust system section 4 5 Exhaust System may be used 4 4 Combi Funnel for Bulk and Long Material The combi funnel is used for 1 freeflowing pourable material 2 grinding long pieces of material such as straw or wood For fine grinding lt 2 mm the exhaust system section 4 5 Exhaust System must be used 4 5 Exhaust System Sample exhauster with cyclone dust chamber e Insert the adapter for the exhauster in the same manner as a collecting vessel e Connect the connecting hose with the adapter and the exhaust system e Close the cutting mill e Screw the collecting glass on the cyclone at the lower end of the exhaust system ensure that the connecting hose fits securely and switch on the exhaust system There are two opposing hose connectors on the exhaust system Do not use the closed connection Leave it closed Noise Level will be higher e Switch on the machine as in section 4 1 and the exhaust system e Fill in a small quantity of material to be ground by hand and note the grinding noises If the motor speed decreases audibly reduce the feed slightly A rapid eddy with ground material should form in the collecting glass The quantity of material to be ground will depend on the
8. FRITSCH E a ee Operating Instructions Universal Cutting Mill pulverisette 19 and Power Cutting Mill pulverisette 25 Fritsch GmbH Laborger tebau Industriestrasse 8 D 55743 Idar Oberstein Phone 6784 70 0 Fax 6784 70 11 E Mail info fritsch de Internet http www fritsch de Fritsch GmbH Laborger tebau has been certificated by the TUV Zertifizierungsgemeinschaft e V on June 24 1994 Av Conn DIN EN ISO 9001 9 An audit certificated the accordance of the Fritsch GmbH to the DIN EN ISO 9001 The enclosed declaration of conformity calls the directives which the pulverisette 19 resp pulverisette 25 corresponds to This permitts us to mark the instrument with the CE Sign Instrument number 19 10x 00 25 20x 00 Applies as of serial number 0100 Edition 02 2002 Index 004 checked and released FRITSCH FRITSCH E E Table of contents page 1 General Information Introduction 1 1 1 Notes about Operating Instructions 1 1 2 Explanations of the signs at the instrument and in the operating SOS eee a EE 2 1 3 Brief Description of the Instrument 2 1 3 1 POCA ONG EEE EE 2 1 3 2 Method of Operation sise 3 1 3 3 Pee 3 1 4 FANN 3 2 OPEN STN ee DES EEG EEG Eg 5 2 1 General Safety Instructions rrrrrrrrrrnnnnnrvrrnrrrnnnnnnrrrnnnrrnnnnnsssnnnnnnnnee 5 2 2 O 0 1 6 1 5 E AER er 6 2 3 Protective Equipment se 6 2 3 1 Opening the closure hatch when the
9. ad is distributed uniformly over the entire length e Close the cutting mill e Pass the attached hexagon socket screw key through the central hole in the closure hatch Now turn the hexagon socket screw key and thus check whether the rotor rotates freely e Remove the Allen key again immediately 4 2 6 Choice of Sieve Cassette Please note that the sieve cassettes for the machines p 19 and 0 25 differ from each other Coarse pieces of material should be precomminuted with a coarse sieve 2 4 mm and comminuted to the desired final fineness in a second grinding step pulverisette 19 pulverisette 25 page 14 _ FRITSCH 4 3 Grinding Operation with Standard Funnel Insert the collecting basin Close the cutting mill see section 4 2 3 Pull out the slide rod 7 fully Move the press plunger 8 into the lower position Open the cover load some material to be ground and close the cover again The quantity of material to be ground will depend on the feed grain size and the grindability of the material It is best to start with small quantities and increase the quantity depending on the success of the grinding process e Switch on the machine see section 4 1 e Move the slide rod 7 to the right in the direction of the press plunger 8 until the material to be ground is in front of the press plunger e Pull the press plunger 8 upwards and move the slider fully to the right until the material to be ground drops in
10. al problems or under the influence of medications drugs alcohol or overtiredness should be permitted to operate the instrument 2 3 Protective Equipment e Protective equipment must be used as intended and must not be rendered disabled or dismantled e All protective devices should be regularly checked for completeness and to ensure that they are functioning correctly e The cutting mill is equipped with a safety lock for personal protection which locks the front closure hatch during operation e The safety switches prevent operation of the cutting mill when the grinding chamber is not closed and no collecting basin has been inserted e Do not operate the machine without a feed funnel The feed funnels are mechanical protective devices which permit safe feeding e When changing the funnel disconnect the machine from the mains supply and fit the new funnel immediately e Motor protection switch see chapter 4 3 2 3 1 Opening the closure hatch when the machine is not connected to the mains supply Attention Before you start open the closure as explaned below ensure that the closure hatch and the toggle type fastener A is closed r 4 1 Insert the attached triangular wrench through the bore located PS below the safety lock see right and turn clockwise 2 The closure hatch can now be opened after the toggle type fastener A of the machine is opened NT 2 3 The cutting mill can now not be switched on For this the NN
11. ate with the values of the mains supply to which the machine is to be connected Attention mains voltage see section 1 4 Fehler Verweisquelle konnte nicht gefunden werden If after the machine has been connected to a three phase mains supply and the main switch has been switched on the START button does not come on the direction of rotation must be corrected For this two phases must be changed The connecting cable may be changed only by a trained expert 3 6 Before Switching On for the First Time Universal cutting mill p 19 Power cutting mill p 25 e Connect the machine to the mains supply e Set the main switch at the e Set the main switch at the rear of the machine to rear of the machine to 0 HAND e Pass the attached hexagon socket screw key through the central hole in the closure hatch Now turn the hexagon socket screw key and thus check whether the rotor rotates freely e Remove the Allen key again e If the rotor does not rotate freely proceed as described in section 4 2 4 This check should also be made every time the rotor is changed 3 7 Switching On for the First Time Test for Correct Functioning Switch on the machine only when all the work described in section 3 has been done pulverisette 19 pulverisette 25 page 9 4 4 1 4 2 Working with the Cutting Mill Switching On Switching Off Universal cutting mill p 19 Power cutting mill p 25 Again check that the cutting mill is loc
12. ated securely Check whether the feed funnel is fitted securely Insert the collecting basin Check whether the toggle type fastener A is closed Connect the machine to the mains supply the START button must come on see 2 5 Fehler Verweisquelle konnte nicht gefunden werden e Set the main switch at the e Set the main switch at the rear of the machine to rear of the machine to I AUTO e Switch on the machine by pressing the START button The closure hatch will now be locked To switch off the machine press the STOP button After waiting for a few seconds open the closure hatch Switch off the main switch if the cutting mill is to be inoperative for an extended period e g over night Never open the toggle type fastener during operation as this can seriously damage the rotor Preparation for Grinding 4 2 1 Inserting Changing a Sieve Cassette Switch on the machine at the main switch After a few seconds open the toggle type fastener 1 Open the closure hatch 2 fully and slowly open the housing upper section 3 initial resistance will be felt until the housing upper section is resting on the rubber buffer A Pull the sieve cassette out towards the front If necessary use the extracting tool 45 5550 10 Insert the extracting tool in the two holes in the sieve cassette to beyond the bends of the extracting tool When inserting the extracting tool move it up and down gently If the sieve cassette become
13. clone dust chamber erne sst nt Ek EK E AE E SEE LEE ELLLER 17 19 switching ON 9 pulverisette 19 pulverisette 25 page 21
14. e Gap Width This check should be made every time the rotor is changed 4 2 3 Closing the Cutting Mill Before closing the cutting mill clean the cutting chamber the contact surfaces of the housing and in particular the closing surfaces of the lock e Slowly close upper section of the housing until it rests in its closed position e Close the closure hatch e Hook in the loop of the toggle type fastener and pull the handle of the toggle type fastener over e Check whether the rotor rotates freely Set the main switch to HAND Pass the attached hexagon socket screw key through the central hole in the closure hatch Now turn the hexagon socket screw key and thus check whether the rotor rotates freely Remove the Allen key again immediately If the rotor does not rotate freely proceed as described in section Setting the Knife Gap Width This check should be made every time the rotor is changed pulverisette 19 pulverisette 25 page 11 4 2 4 Mounting of rotating tools and fixed knifes p 19 45 5320 00 p 25 45 7330 00 p 19 45 5310 00 p 25 45 7310 00 p 19 45 5320 00 p 25 45 7320 00 First insert the fixed knifes Consider the situation of the W C tungsten carbide inserts blue she 7 p A t BR P The rotary tools of the mills turn in the clockwise direction Use indexed knifes or v shaped rotors by hand and thereby turn in clockwise direction until the tool at the back engages into the carrier bolts Clo
15. eces could not be larger pieces could not be processed processed Batchwise feeding Batchwise feeding Final fineness Universal cutting mill p 19 Power cutting mill p 25 Achievable mean final fineness Achievable mean final fineness 0 25 6 mm depending on sieve 1 10 mm depending on sieve insert insert Speeds Universal cutting mill p 19 Power cutting mill p 25 approx 3000 rom approx 300 rom pulverisette 19 pulverisette 25 page 4 FRITSCH E E A 2 Operating Safety 2 1 General Safety Instructions Read the operating instructions carefully before use The instrument can only to be used for the purpose described in Chapter 1 3 1 Applications Use only original accessories and original spare parts Failure to do so may call into question the performance of the instrument Do not use damaged accessories The operators must be familiar with the contents of the operating instructions To this end for example the operating instructions must be kept with the instrument Do not remove labels Protective devices must not be made unserviceable or removed Unauthorized modification of the instrument or any part thereof will result in the loss of the conformity to European directives which is asserted by Fritsch and the warranty Wear protective gloves while cleaning the cutting chamber Wear ear protectors if the noise level is higher than 85dB A Behaviour at all times must be such as to strictly preclude any ri
16. ensions and weight Universal cutting mill p 19 Power cutting mill p 25 450 mm x 630 mm x 550 mm 450 mm x 630 mm x 650 mm width x height x depth width x height x depth 56 kg net weight 75 kg Net weight 86 kg gross weight 105 kg gross weight Noise level The noise level is approx 73dB A at idle and including the cyclone 95 dB A at idle The value fluctuates considerably depending on the material being ground pulverisette 19 pulverisette 25 page 3 FRITSCH Nominal voltage Power consumption Power output Current input or required supply side fusing Universal cutting mill p 19 Power cutting mill p 25 400V 3 1800W 1500W 16A 400V 3 2500W 2200W 16A 230V 3 1800W 1500W 16A 230V 3 2500W 2200W 16A 230V 1 2200W 1500W 16A 115V 1 1700W 1100W 15A see also section 3 5 Electrical Connection Transient overvoltages according to overvoltage category Il allowed Electric fuses e Automatic circuit breaker in the machine e Micro Fuse in the machine e Motor protection switch see chapter 4 3 e In machines with a three phase a c motor a direction of rotation detection system is fitted see chapter 2 5 Electrical Safety Material Universal cutting mill p 19 Power cutting mill p 25 Feed size relatively hard Feed size size relatively hard material max 10 mm in other material max 20mm in other cases there is no reason why cases there is no reason why larger pi
17. ff Safety Securing the lower Check the machine runs without the Before each use switch opening of the collecting vessel or the adapter for cutting chamber the exhaust system START Indicating Check that the START button Before each use button readiness for comes on when the main switch is operation on Rotor Comminuting Check that the rotor sharp Before each use material Maintenance resharpening Stationary Comminuting Check that the knife sharp Before each use knife material Maintenance resharpening Cutting gap Cutting operation Measure the gap width After every rotor change Cones Centring the rotor Check the cones for cleanness and After every rotor grooves change pulverisette 19 pulverisette 25 page 19 7 Warranty FRITSCH ke The warranty card accompanying this instrument must be returned to the manufacturer duly filled out in order for the warranty to become effective We Fritsch GmbH Germany our application technology laboratory and our agent in your country will gladly provide advice and assistance with this instrument Always include the serial number shown on the nameplate with any queries 8 Troubleshooting Checklist Malfunction Possible cause Elimination of error START button not illuminated START button pressed but Mill does not start up Motor stops STOP button comes on Material Material is extremely escapes fine Uneven running with severe vib
18. is restored the lock of the hood will open For safety reasons however the cutting mill will not start again Direction of Rotation Detection In machines with a three phase a c motor a direction of rotation detection system is fitted If after the machine has been connected to the mains supply and the main switch has been switched on the START button does not light up the direction of rotation must be corrected For this two phases must be changed Overload Protection e Inthe event of overloading a motor current protection switch see chapter 4 3 will switch off STOP button will shine pulverisette 19 pulverisette 25 page 7 _ FRITSCH 3 Installation 3 1 Unpacking Remove the nails with which the protective packing Is fastened on the transport pallet The transportation protective packing is either a wooden box or a cardboard box placed on the transport pallet e Lift the hood off the transport pallet e Check that the items supplied correspond to your order before proceeding 3 2 Transport e Transport the machine on the transport pallet using a fork lift truck or hand fork lift truck e To carry the machine grip it below at the front and the back Do not use the housing for carrying Carrying the machine will require at least two persons 3 3 Erection ae S e The cutting mill is secured to the transport pallet by four screws Undo the four screws e Lift the cutting mill off the transport pallet
19. machine is not connected to the mains D em teese tacos E sect 6 2 4 Danger Points iii 7 2 5 Electrical Safety 7 3 EEE HORN ann canine danois 8 3 1 Unpacking sise 8 3 2 Transport si L ERE LE ERE EL ER ELE ERE E ERE LEE 8 3 3 ENN 8 3 4 Ambience conditions rranrrnanennanernanennnnenanrnnanennanennunennnsenasennnsnnasennusennn 9 3 5 Electrical Connie OB AES 9 3 6 Before Switching On for the First Time rrrnrrnnnrnnnnnnnvovnnrrnnnnnnnnvnnnnnn 9 3 7 Switching On for the First Time Test for Correct Functioning 9 4 Working with the Cutting Mill 10 4 1 Switching On Switching Off 10 4 2 Preparation for Grinding Vs 10 4 2 1 Inserting Changing a Sieve Cassette nn kk rntrrer 10 4 2 2 Inserting Changing a Rotor rrrrnnnnnnnvrnnrrnnnnnnnnvvnnrrnnnnnnnsrnnnrrnnnnnnnsnnnnrnnnnnnnne 11 4 2 3 Closing the Cutting Mill EE 11 4 2 4 Mounting of rotating tools and fixed knifes u ssssssssneeeenneenssnseneknnnnnee 12 4 2 5 Setting the Knife Gap Width ERR E ERR E REE EE ERE REE 14 4 2 6 Choice of Sieve Cassette 14 4 3 Grinding Operation with Standard Funnel 15 4 4 Combi Funnel for Bulk and Long Material 17 4 5 Exhaust System Sample exhauster with cyclone dust chamber 17 5 Cleaning a ss nen mme nn nm ERR 18 5 1 Cleaning the Exhaust system Sample exhauster with cyclone dust chamber 2 19 6 Maintenance
20. ration Not connected to mains Main switch In case of three phase a c motor Incorrect direction of rotation Plug in mains plug Switch on the main switch Change two phases Circuit breaker of the Press in the circuit building breaker Fuse burnt out hatch not properly closed Collecting basin or adapter for the exhauster not pushed in properly Remove the housing and replace the fuse Clean the contact surface Close the closure hatch Push in the collecting vessel or the adapter for the exhaust system properly so that the switching tongue engages Mill protection switch Motor protection switch triggered see chapter 4 3 Eliminate cause of malfunction Reduce the feed quantity Rotor imbalance Bearing in closure hatch defective Parts broken off the rotor Cones contaminated Replace bearing Replace rotor There is a copy of the circuit diagrams in the machine pulverisette 19 pulverisette 25 page 20 FRITSCH 9 List of keywords A Applications nnnvvrrrvvrrrrerrrerrrrerssrerererrenenn 2 D direction of rotation 1 Mr 3 E electrical connection 9 electrical safety 7 exhaust System ereere 17 19 M MAIN SWITCH EP 20 maintenance csseesssesssesssesersseseersteess 19 LEE ormene risene 4 17 O eksl ol GING ao 7 16 P Protection against Restarting l e 7 protective device m m 6 Protective devices mnnmuusuummn 5 NOS NE 5 S Sample exhauster with cy
21. s jammed remove the material to be ground below the left hand stationary knife with a screwdriver Before inserting the sieve cassette clean the cutting chamber thoroughly so that the machine can be closed tightly again pulverisette 19 pulverisette 25 page 10 FRITSCH FRITSCH ar 4 2 2 Inserting Changing a Rotor Universal cutting mill p 19 Power cutting mill p 25 e Set the main switch at the e Set the main switch at the rear of the machine to rear of the machine to I AUTO e Open the toggle type fastener 1 Open the closure hatch fully 2 and slowly open the housing upper section 3 until it is resting on the rubber buffer e Pull the rotor out towards the front wear protective gloves If necessary carefully lever out the rotor e Clean the cones of the rotor e Clean the two cones of the cutting mill 1st in the closure hatch and 2nd in the receptacle e When inserting the rotor rotate it until it engages with the driver pins at the rear The main switch must be set to AUTO p 19 e Check whether the rotor rotates freely Set the main switch to HAND Pass the attached hexagon socket screw key through the central hole in the closure hatch Now turn the hexagon socket screw key and thus check whether the rotor rotates freely Remove the Allen key again immediately If the rotor does not rotate freely proceed as described in section Setting the Knif
22. sc of accidents Furthermore the MAC values at place of work specified in the pertinent safety regulations must be adhered to Where applicable ventilation must be provided or the instrument must be operated under an exhaust hood When oxidizable materials such as metals organic materials wood coal plastic etc are ground or sieved the risk of spontaneous ignition dust explosion exists whenever the fine particles exceed a specific percentage While such materials are being ground or sieved it is therefore necessary to take special safety precautions e g wet grinding or wet sieving and the work must be supervised by a specialist The instrument is not explosion proof and is unsuitable to grind or sieve materials which are explosive combustible or promote combustion The safety lock see arrow In the drawing becomes warm when the machine has been in operation for some time This is not dangerous OJ pulverisette 19 pulverisette 25 page 5 FRITSCH e p 19 The switch at the back is no mains switch it is a control switch For this reason you have to pull out the mains plug to disconnect the instrument from mains e p 25 The switch at the back is the mains switch For this reason the switch has to be easy and quickly to reach 2 2 Operators e No one other than authorized persons should operate the instrument and it must be serviced and repaired by trained specialists e No one suffering from medic
23. se then only the door of the mill pulverisette 19 pulverisette 25 page 12 EE DER j AEE TT j fi 7 C di BZ J a i sha TPS L p 19 45 5160 09 45 5181 09 p 25 45 7180 09 45 7181 09 p 19 45 5160 09 45 5161 09 p 25 45 7160 09 45 7161 09 p 19 45 5170 09 p 25 45 7170 09 45 7171 09 Screws for fixing the fixed knifes after setting pulverisette 19 pulverisette 25 page 13 FRITSCH 4 2 5 Setting the Knife Gap Width Factory settings Universal cutting mill p 19 Power cutting mill p 25 e approx 0 2 mm e approx 0 5 mm Universal cutting mill p 19 Power cutting mill p 25 e Set the main switch to e Set the main switch to I HAND e Open the closure hatch and open the housing upper section e Loosen the central hexagon socket retaining screws for all three stationary knives and unscrew them a short distance e Rotate the rotor until the rotor knives and the stationary knives are located exactly opposite each other e Screw in the headless pins to the right and left of the retaining screws uniformly until they contact the rotor knives Then turn the headless pins back uniformly through 1 4 of a revolution and tighten the retaining screws again Using this method a knife gap of approx 0 2 mm can be set This can be checked with a feeler gauge This corresponds to 2 sheets printer paper 809r The counter knives must be parallel with the rotor knives so that the cutting lo
24. to to the grinding chamber slight grinding noise will be heard e Leave the slider at the right and move the press plunger downwards grinding noise will become louder e Push the press plunger up down This pumping results in air beeing succed in and pumped out by the air filter on the right hand side of the machine The air movement is critical to ensuring the fine material passes through the sieve for collection while the larger particles are returned for reprocessing e The grinding operation is finished when the grinding noise becomes quieter e Further material to be ground can then loaded into the machine as above pulverisette 19 pulverisette 25 page 15 FRITSCH a Overloading of the cutting mill During loading and during the downwards movements of the press plunger attention should be paid to the noise of the grinding process The volume of the noise corresponds very closely to the loading of the machine It is also clear from the sound pitch if the motor speed is decreasing due to overloading Pulling the press plunger back in good time will prevent overloading of the mill and prolong the life of the grinding parts and the sieve If the cutting mill is overloaded motor protection switch proceed as follows 1 Unplug power cord 2 Allow the device to cool down 3 Remove the 3 screws on the housing see image 4 Carefully lift off the housing see image
Download Pdf Manuals
Related Search