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PULVERISETTE 7
FRITSCH PLANETARY MICRO MILL
Operating Manual
Translation of the original
Page 1: ...1 1 PULVERISETTE 7 FRITSCH PLANETARY MICRO MILL Operating Manual Translation of the original ...
Page 2: ...PULVERISETTE 7 ...
Page 3: ...sch GmbH has been certified by the TÜV Zertifizierungsgemeinschaft e V Certificat registration number 71 100 J 596 It was verified through an audit that Fritsch GmbH satisfies the requirements of DIN EN ISO 9001 2008 The enclosed declaration of conformity calls the directives which the PULVERISETTE 7 corresponds to This permitts us to mark the instrument with the CE Sign Instrument number 07 4000 ...
Page 4: ...1 3 6 Adaptation to Mains Supply Voltage Changing the Timer Setup Mode 11 3 7 Switching On for the First Time Test for Correct Functioning 12 4 Working with the Planetary Micromill 13 4 1 Choice of Grinding Bowls and Grinding Balls 14 4 1 1 Size of the Grinding Balls 14 4 1 2 Number of Balls per Grinding Bowl 15 4 1 3 Calculated Ball Weight 15 4 2 Filling the Grinding Bowl 16 4 3 Influencing Quant...
Page 5: ...Page 2 PULVERISETTE 7 5 Cleaning 21 5 1 Grinding accessories 21 5 2 Mill 21 6 Maintenance 22 7 Warranty 23 8 Troubleshooting Checklist 24 9 Disclaimer 25 ...
Page 6: ... operating instruc tions Please observe all notes concerning your safety The sieve shaker was designed with the user s safety in mind however in herent risks cannot be excluded Follow the advices 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 ...
Page 7: ...ating 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 wear safety goggles Do not step below lifted load ...
Page 8: ... balls The grinding balls and the material in the grinding bowl are acted upon by the centrifugal forces due to the rotation of the grinding bowl about its own axis and due to the rotating supporting disc The grinding bowl and the supporting disc rotate in opposite directions so that the centrifugal forces alternately act in the same and opposite directions This results in as a frictional effect t...
Page 9: ...ge 100 120V 10 and Single phase alternating voltage 200 240V 10 see also section 3 6 Current Input The maximum current input is approx 8 8 A 115V 3 7 A 230V Power consumption The maximum power consumption is approx 600 W Electrical Fuses Fuse unit at the rear of the machine 2 x 8 A T Miniature fuse 2 x 0 063 A T on printed circuit board remove housing Miniature fuse 10 A T in the frequency convert...
Page 10: ... than 85dB A Don t run the instrument several hours without cooling phases Dan ger of overheating Behaviour at all times must be such as to strictly preclude any accidents Furthermore the MAC values at place of work specified in the perti nent safety regulations must be adhered to Where applicable ventila tion must be provided or the instrument must be operated under an exhaust hood Use the instru...
Page 11: ... on Mainte nance The hood must be closed when the machine is started up The hood is locked when the machine is disconnected from the mains supply during operation The hood can be opened only when the drive of the mill has come to a standstill Opening the hood when the machine is disconnected from the mains supply 1 Remove the plug from the safety lock It can be accessed via the bore in the base of...
Page 12: ... the event of a mains failure during operation or after switching off with the main switch the hood will remain locked When the mains voltage is restored the lock of the hood will open For safety reasons however the plane tary micromill will not start again Overload Protection see Troubleshooting Checklist In the event of overloading the speed of the machine will be reduced This is indicated by th...
Page 13: ...t Fritsch GmbH does not bear the risk of damages depending on improper packings non Fritsch packings 3 2 Transport Transport the planetary micromill on the transport pallet with a fork lift truck or a hand fork lift truck To carry the machine grip it below the edge of the housing Carrying the machine will require at least two persons 3 3 Erection Lift the planetary micromill off the transport pall...
Page 14: ...hangeover switch to the voltage range 3 Connect the machine to the mains supply 4 Press and hold down the STOP button on the control panel at the front 5 Switch on the main switch at the rear of the machine and release the STOP button immediately afterwards 6 The POWER SUPPLY light must flash If it does not repeat the procedure 7 With the ROTATIONAL SPEED buttons select the mains supply voltage le...
Page 15: ... the main switch at the rear 3 The green POWER SUPPLY display will come on 4 Open the hood 5 Both bowl holders clamp the wood or empty bowl with the spindle 6 Close the hood 7 Set the speed to 100 on the control panel 8 Press START on the control panel 9 The hood will be locked and the mill will run at the preselected speed Switching Off Press STOP on the control panel After a short period after t...
Page 16: ...es which occur during the grinding may strike through the grinding bowl wall damaging the mill We don t honour the warran ty or accept complaints for instrument damage or personal injuries occurring when disregarding the above information NOTE During milling high temperatures can build up in the grinding bowl In encased grinding bowls the inserts are glued into the cas ing with a two component con...
Page 17: ...4 7 Very good Silicon nitride Syalon 90 Si3N4 3 1 Extremely good The grinding bowls and grinding balls of zirconium dioxide are resistant to acids with the exception of hydrofluoric acid Normally grinding bowls and grinding balls of the same material should be chosen Exeption Tungsten carbide balls may be combined with steel bowls The size of the grinding bowls and grinding balls should be determi...
Page 18: ... 39 4 68 Sintered corundum 3 8 0 25 1 99 6 72 Zirconium oxide 5 7 0 37 2 98 10 07 Stainless steel 7 8 0 51 4 08 13 78 Tempered steel 7 9 0 52 4 14 13 96 Hardmetal tungsten carbide 14 7 0 96 7 70 25 98 Silicon nitride Syalon 3 1 0 20 1 62 5 48 Ball diameter in mm Calculated ball weight in g To calculate the weight of the required balls the calculated ball weight is mul tiplied by the number of ball...
Page 19: ...ne fraction Reversing operation regular reversal of the direction of rotation May improve the grinding useful for mechanical alloying Number and size of the balls Pregrinding coarse hard material with large balls small fine fraction Use of many small balls will increase the fine fraction if the running time is in creased Mass of the balls type of material A higher mass density of the grinding ball...
Page 20: ...eck the rubber disc for damage Replace rubber discs that are flattened and project laterally beyond the pressure piece The plane surfaces of the counter plate and of the clamp clip must not be dirty The surfaces of the lid and of the bowl on which the flat Teflon seal rests must be clean Clamping Place the sealing ring and the lid on the bowl Insert the grinding bowl in the pot mounting on the cor...
Page 21: ... has to be de termined experimentally by the user clue In the case of grinding at high speeds the grinding time should not exceed 1 hour temperature dependent Then allow to cool for 0 5 to 1 hour Pay attention to the heating of the material In the case of extended running times if necessary set a break time for cooling Before switching on again after a cooling phase check that the clamping is secu...
Page 22: ...ing operation the remaining running times and the remaining break times are indicated The machine cannot be operated with an external timer For information on running times see section 4 6 on Grinding Time To interrupt the grinding press the STOP button continue grinding by press ing the START button n b account is taken of the grinding time already elapsed and of the number of repetitions 4 7 3 R...
Page 23: ... will be reduced and the OVERLOAD light will shine If it is overloaded for a prolonged period the mill will switch off see theTroubleshooting Checklist in section 8 Miscellaneous During operation the hood will remain locked even during the breaks and the fan will run Switching Off Press STOP on the control panel When the drive has come to a standstill the hood is unlocked and can be opened Switch ...
Page 24: ...ning in the ultrasonic bath is permissible When sterilising the grinding bowl and grinding balls in the heat cabinet heat only to 100 C Parts of agate sintered corundum zirconium oxide should being cooled down carefully and slowly Agate parts must never be heated in the microwave they heat up too rap idly They must never be subjected to temperature shocks such shocks may destroy the parts They bur...
Page 25: ...s that the hood is closed With the hood closed the green LID LOCK ACTIVATED light must be illuminated 1 x monthly Rotating bearings Permanent lubri cation Bearing play Every 2 000 hours or annu ally Drive motor Permanent lubri cation Bearing play Every 4 000 hours or annu ally V belt Motor planet disc Check the tension Remove the housing the belt should not yield by more than approx 10 mm under th...
Page 26: ...ur website http www fritsch de The company Fritsch GmbH in Idar Oberstein and your Technical Application Laboratory or the corresponding national representatives would be happy to provide you with advice and assistance Please include the serial number given on the type plate along with any ques tions Please note that the original Fritsch packaging must be used in the event that the machine is retu...
Page 27: ...overloading Press Stop Reduce the load or accept the reduced speed Mill stops Switched off because of thermal overloading of the drive Let the machine cool down and choose a lower speed Unbalance of the ma chine too large Set the mass balance in a better manner Drive was obstructed Eliminate the obstruction in the grinding chamber Motor V belt loose or snapped Check the V belt and re place it if n...
Page 28: ...cular purpose unless ap plicable laws or adjudications prescribe a liability FRITSCH GMBH expressly reserves the right to amend and or to update these operating instructions without prior notice The same applies to changes and improvements to the products described in these operating instructions The onus for obtaining information about the current status of these operating in structions lies with...
Page 29: ...l injury including death or the like In so far as the law or adjudications require a mandatory liability the above disclaimer is to be considered as limited A liabil ity for negligence is excluded in every case No explicit implied or other rights of usage are granted for patents trademarks or other intellectual property rights Likewise we assume no responsibility for patent infringements or violat...
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