Instruction manual
OPERATION
© Hermle Labortechnik GmbH Z216MK_V4.14 17
2.1.2 Loading angle rotors
Rotors must be load symmetrically and with equal weight (see figure 15+17). The adapter may only
be load with the appropriate vessels. The weight differences between the filled vessels are as low as
possible to keep. Therefore we recommend to weighting with a balance. This reduces the wear of
drive and the acoustic operating noise.
On each rotor is designated how large the maximum load per hole is. (It is allowed to operate e.g. a
12-place-rotor with 2 or 4 loaded tubes only. But the loaded borings must be opposite each other).
Figure 14: CORRECT Figure 15: WRONG
ATTENTION!
Do not operate the centrifuge with rotors or buckets which 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!
2.1.3 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. IV).
The maximum load permitted for a rotor, which is determined by the manufacturer, as well as the
maximum speed allowed for this rotor (see label on rotor), must not be exceeded. The liquids the
rotors are loaded with, should have an 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
red
=
x max. speed (n
max
) of the rotor
Example:
n
red
=
x 4.000 = 3.360 rpm
If In case of any questions, please contact the manufacturer!