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Fritsch GmbH, Laboratory Machines was awarded certification on 24 June 1994 by the TÜV-Zertifizierungsgemeinschaft e.V. Proof of fulfilment of the requirements of DIN EN ISO 9001 by Fritsch GmbH was given by means of an audit. The enclosed attestation of conformity outlines the standards which the high-speed rotor mill "pulverisette14"...
FRITSCH Table of contents Page General / Introduction ..............1 Operating manual instructions..............1 Explanation of the symbols used on the machine and in the operating manual ..............1 Short description of the machine ............... 2 1.3.1 Areas of application ....................2 1.3.2...
FRITSCH General / Introduction Operating manual instructions • The copyright of these technical documents belongs to Fritsch GmbH, Laboratory Instruments. • Reprinting and reproduction of this operating manual is only allowed with the permission of Fritsch GmbH, Laboratory In- struments.
Use protective gloves! Use ear protection! Use eye protection! Short description of the machine 1.3.1 Areas of application The "pulverisette 14“ is a high-speed rotor mill used for rapid crushing of soft to medium-hard samples such as, for example: plants: wood roots...
6000-20000 1/min by pressing the keys marked (+) or (-), allowing it to be adapted to the requirements of the sample grinding. The speed is adjusted according to each load situation. pulverisette 14 Page 3...
• Fuse-link at the back of the machine 2 x 0.4AT Material • Feed particle size maximum approx. 10 mm • Feed amount maximum 200 ml Final fineness The final fineness depends on the inserted sieving ring and is be- tween 0.08 mm and 6.0 mm. pulverisette 14 Page 4...
• All threshold limit values according to current safety requirements Wear ear protection must be followed; if necessary, a ventilator must be provided or the machine must be operated under an extractor outlet. pulverisette 14 Page 5...
The hood must be closed for operation. The hood is locked: • when the machine is disconnected • during operation The hood can only be opened when the mill's drive motor has come to a standstill. pulverisette 14 Page 6...
The motor is started by pressing the [ START ] switch after rectifying the fault. In the event of excessive heating of the drive motor, the machine switches off. The machine switches off if the drive is blocked. pulverisette 14 Page 7...
• Height up to 2000m sea level Danger: mains voltage • Maximum relative humidity 80% for temperatures up to 31°C, linearly decreasing to 50% relative humidity at 40°C. • Contamination grade 2 in accordance with IEC 664. pulverisette 14 Page 8...
Single-phase alternating voltage with protective conductor (see chapter 1.4 Technical data). Changes or adjustments to the connecting cable may only be carried out by assigned specialists. pulverisette 14 Page 9...
You can remove the interior hopper to feed in the material to be ground. The 8-rib-rotor is also suitable for pre-crushing (or coarse crush- ing). To do so, it is operated with the sieving ring substitute (no. 44.1110.00) and possibly without the interior hopper as well. pulverisette 14 Page 10...
0.50 mm Order no. 44.1050.32 1.00 mm Order no. 44.1100.32 Sieving ring with round perforation (special steel) 1.00 mm Order no. 44.2100.10 2.00 mm Order no. 44.2200.10 4.00 mm Order no. 44.2400.10 6.00 mm Order no. 44.2600.10 pulverisette 14 Page 11...
5. Lid (the centre disc in the middle of the lid must line up with the centre of the sieving ring) The machine may only be operated when all parts have been fitted. If parts are forgotten, damage to the machine can re- sult. pulverisette 14 Page 12...
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The smaller the internal diameter, the lower the noise levels when grinding. Caution: when opening the hood, the small interior hopper can fall out to the rear when the hood is fully opened. pulverisette 14 Page 13...
You can also use so-called dry ice (solid carbon dioxide) for cool- ing. You should remember, however, that dry ice often contains frozen condensation water on the surface, which, amongst other things, can clog up or contaminate the sieving ring. pulverisette 14 Page 15...
Place the dosing channel on a stand next to the high-speed mill, so that the channel end is over the hopper. For electricity supply, connect the vibration dosing channel to the socket on the back of the high-speed mill. pulverisette 14 Page 16...
O-ring is pressed into the groove. The 12-rib-rotor or 24-rib-rotor can be used as well as the 8-rib- rotor. You can find the order numbers of the various sieving rings on the spare parts drawing. pulverisette 14 Page 17...
The finer the sieve perforation is, the longer the grinding time; finer perforation reduces the noise level. Cooling Good cooling (e.g. by using the filter system or material suction) always has a positive effect on grinding and mill. pulverisette 14 Page 18...
If the temperature sensor is not functioning correctly, it is permanently lit as soon as the mill is switched on. Cooling is temperature-controlled. Activation and deactivation of the fan is not dependent on motor operation. pulverisette 14 Page 19...
Before starting work, open the hood until the actuator is no longer engaged in the tumbler and simulate a start test with open hood. If the machine does start, switch off at once, decommission the machine and renew the tumbler. pulverisette 14 Page 20...
The company Fritsch GmbH, Idar-Oberstein and its "Application Technology Laboratory" or the corresponding state representa- tives will gladly offer help and advice.
Fuse insert on back of ma- chine 2 x10 A T Grinding ma- Sealing ring defective Clean or replace sealing terial emitted or dirty ring Noisy running Motor bearing defect, Check motor and grinding with heavy balance grinding rotor vibrations rotor pulverisette 14 Page 22...
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