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Related Manuals for Domel CENTRIC 250
Summary of Contents for Domel CENTRIC 250
- Page 1 USER'S MANUAL LABORATORY CENTRIFUGE CENTRIC 250 Edition Month Year 2024 ID 403988 Domel, d.o.o. Otoki 21, 4228 Železniki, Slovenia Business Unit Laboratory Systems Na Plavžu 79, 4228 Železniki, Slovenia Tel.: +386 (0)4 5117 500 Internet: https://www.domel.com...
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Page 2: Preface
CENTRIC 250 PREFACE Dear customer, Congratulations for purchasing our centrifuge CENTRIC 250. You have selected a reliable device which combines many advantages. A wide selection of programming options and electronic operation control allow a trouble-free use of the centrifuge. With a special drive, maintenance-free and quiet operation without any carbon dust pollution is guaranteed. -
Page 3: Table Of Contents
USER'S MANUAL CENTRIC 250 TABLE OF CONTENTS Page PREFACE ..........................2 TABLE OF CONTENTS......................3 1. SAFETY INFORMATION ...................... 4 1.1 WARNING SYMBOLS ......................4 1.2 SAFETY INSTRUCTIONS....................4 2. INTRODUCTION ........................6 2.1 INTENDED USE ......................... 6 2.2 BASIC EQUIPMENT ......................6 2.3 UNPACKING AND LIFTING OF THE DEVICE .............. -
Page 4: Safety Information
USER'S MANUAL CENTRIC 250 1. SAFETY INFORMATION Before using the machine, make sure to read and understand this manual thoroughly. Keep the manual close to the machine, easily accessible to all the users. Improper operation can cause injury to persons or damage to the equipment. - Page 5 USER'S MANUAL CENTRIC 250 • During longer spin times, test tubes may heat up. Observe the requirements and regulations specified by test tube manufacturer. • The use of organic solvents and reagents may have adverse effect on the stability of plastic test tubes.
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Page 6: Introduction
2. INTRODUCTION 2.1 INTENDED USE Centrifuge CENTRIC 250 is a laboratory centrifuge intended to be used in laboratories for separating the substances with different specific densities by centrifugal force. The maximum rotational speed of 16200 RPM gives the centrifugal force of 25230 x g. -
Page 7: Overall View
USER'S MANUAL CENTRIC 250 To disconnect the mains supply from the centrifuge in the event of malfunction, an emergency switch separate from the centrifuge must be available. This switch should be outside the room where the centrifuge is installed or next to the exit of the room. -
Page 8: Operation
USER'S MANUAL CENTRIC 250 3. OPERATION 3.1 CONTROL PANEL Run indicator (four lamps) Display for rotational speed (RPM) and centrifugal force (RCF) Indicator for selection indication between rotational speed (RPM) and centrifugal force (RCF) Knob for setting and selecting between rotational speed (RPM) and centrifugal force (RCF) -
Page 9: Key Functions
USER'S MANUAL CENTRIC 250 3.3 KEY FUNCTIONS SHORT PRESS: By pressing this key, you start and end the run of the centrifuge. When you press the key for the first time, the centrifuge starts to run. When you press it again, the centrifuge stops. -
Page 10: Setting The Rotational Speed And Centrifugal Force
USER'S MANUAL CENTRIC 250 3.4 SETTING THE ROTATIONAL SPEED AND CENTRIFUGAL FORCE By rotating this knob, you change the values of the parameters. By rotating the knob to clockwise direction, the values are increasing, and by rotating it to counter-clockwise direction, they are decreasing. -
Page 11: Program Setting
USER'S MANUAL CENTRIC 250 Run time can be changed during the operation. You should be aware, that when you extend run time, the difference between newly set and originally set time is added to current time, and when you shorten run time, the difference is subtracted. -
Page 12: Rotor Mounting And Dismounting
USER'S MANUAL CENTRIC 250 The following table shows factory preset values of operation parameters for all 100 programs. Rotational Acceleration Run time Braking level Program speed level (min) (brX) (RPM) (AcX) PROG 0 8000 PROG 1 8000 PROG 2 10000... -
Page 13: Rotor Loading
USER'S MANUAL CENTRIC 250 3.8 ROTOR LOADING Test tubes in the rotor must always be loaded symmetrically. You may use only approved test tubes. Weight difference of the samples in test tubes should be as low as possible in order to avoid potential damages of the motor and to minimize running noise and vibration. -
Page 14: Rotor Recognition
USER'S MANUAL CENTRIC 250 3.9 ROTOR RECOGNITION Rotor recognition is executed automatically, every time when the centrifuge starts. If you've just changed the rotor, centrifuge stops, and display shows ROTOR CHG. Press START/STOP key to clear this message. New maximal rotor speed is automatically set, to correspond to the inserted rotor. -
Page 15: Maintenance And Cleaning Of The Centrifuge
USER'S MANUAL CENTRIC 250 4. MAINTENANCE AND CLEANING OF THE CENTRIFUGE 4.1 CLEANING THE CENTRIFUGE For regular cleaning of the outside surface of the centrifuge and the rotor chamber, use mild neutral detergent. Open the lid of the centrifuge and turn off the main switch. Disconnect the mains plug. Remove the rotor with rotor key. -
Page 16: Troubleshooting
USER'S MANUAL CENTRIC 250 5. TROUBLESHOOTING 5.1 ERROR MESSAGES If error happens during the operation of the centrifuge, error message appears on display, and the centrifuge stops automatically. For the list of errors, see below table. DISPLAY PROBLEM SOLUTION SPEED... -
Page 17: Exit From Error Display
USER'S MANUAL CENTRIC 250 DISPLAY PROBLEM SOLUTION SPEED TIME REPAIRS Reduce braking level User Voltage overload on Error on frequency regulator Service the DC link Error on braking resistor Service Voltage too low on Check power supply Service the DC link... -
Page 18: User's Parameters
USER'S MANUAL CENTRIC 250 5.3 USER'S PARAMETERS With user's parameters, you can check the data of currently used rotor and the centrifuge. For entering to user's parameters, the centrifuge must be in stand-by position, and then simultaneously press time and speed knobs and hold them for about 2 seconds. When the first parameter is displayed, release the knobs. -
Page 19: Replacing The Centrifuge Fuses
USER'S MANUAL CENTRIC 250 5.4 REPLACING THE CENTRIFUGE FUSES The following fuses are required for CENTRIC 250: 2 x 10AT 250V (230V) Fuse 2 x 16AT 250V (120V) compartment • Unplug mains plug from the mains socket. Mains • By pressing the locking device on the bottom side of the... -
Page 20: Appendix
USER'S MANUAL CENTRIC 250 7. APPENDIX 7.1 CALCULATION OF CENTRIFUGAL FORCE For the calculation of the centrifugal force (RCF), stated as a multiple of the gravitational force "g", use the following formula: RCF = 11.18 x r x ( n / 1000 ) RCF .. -
Page 21: Transport And Storage
USER'S MANUAL CENTRIC 250 7.4 TRANSPORT AND STORAGE Transport and storage are allowed only in the original packaging. Remove the rotor from the centrifuge before transport and storage. The centrifuge is heavy. To prevent possible injuries, at least two people should lift and carry the centrifuge by holding it at the bottom from opposite sides. -
Page 22: Eu Declaration Of Conformity
Laboratory centrifuge type / model: Centric 250 is in conformity with the provisions of the following regulations and also complies with the following standards 1. Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the...
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