Loading And Overloading Of Rotors; Removing The Rotor - Hermle Z 446 K User Manual

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Figure 15:
ATTENTION!
Do not operate the centrifuge with rotors or buckets that show any signs of corrosion or
mechanical damage.
Do not operate with extremely corrosive substances, which could damage the rotor and
buckets.
In case of any questions, please contact the manufacturer!

2.1.4 Loading and Overloading of Rotors

All approved rotors are listed with their maximum speed and maximum filling weight, in
Table 2: "Permissible Net Weight", (see APPENDIX P. VI).
The maximum load permitted for a rotor is determined by the manufacturer, as well as the maximum
speed allowed for this rotor (see label on rotor), must not be exceeded. The liquid the rotors are
loaded with, should have a max. homogeneous density of 1.2 g/ml or less when the rotor is running
at maximum speed.
In order to spin liquids with a higher density, the speed has to be reduced, according to the following
formula:
Reduced speed n
Example:
In case of any questions, please contact the manufacturer!

2.1.5 Removing the Rotor

Completely, untighten the rotor fixing nut (2. screw over the stiff point) and lift the rotor vertically out of
the centrifuge, (see Figures 10 and 11).
© Hermle Labortechnik GmbH
WRONG
1,2
=
red
ℎ����ℎ���� ��������������
1,2
n
=
red
1,7
Z446K_V1.22_eng
Figure 16:
RIGHT
x max. speed (n
) of the rotor
max
x 4.000 = 3.360 rpm
OPERATION
19

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