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SECTION 6
– OPERATING PRINCIPLES
6.1
PREPARATION OF THE ROTOR TO RUN
Before installation, check the rotor for corrosion and cleanliness.
Chemical corrosion or mechanical corrosion may do severe damage to the rotor and the
centrifuge. Particles which are stuck inside the inserts cause the breakage of tubes and lead
to major imbalance please check to make sure that no particles are left on the rotor.
The central hole of the rotor and the motor shaft should also be clean and dry before all
centrifugal operations and they must be kept in that way all the time.
6.2
LOADING
•
Each tube insert must be at the same weight as the one diametrically opposite for
balancing.
•
In case the number of tubes which will be centrifuged is less than the capacity of the
rotor, the tubes must be placed in opposite inserts. If the number of tubes that will be
centrifuged is an odd number, use a water-filled tube at the same weight for balancing.
Examples of the proper and improper loading are shown below.
Figure 1
Imbalance of the rotor may cause major damage to the rotor and
centrifuge.
Never attempt to introduce liquids into the tube inserts.
Balance the rotor with glass tubes if you use glass tubes for
centrifugation.
Balance the rotor with plastic tubes if you use plastic tubes for
centrifugation.
Always use tubes which can withstand to the set speeds.
