Sigma 2-5, Operating Instruction

Page: 40 / 55

Operating Manual SIGMA 2-5, page 40 of 55
03/06
5.2 Forbidden Centrifuging Operations
1. Operation of not carefully installed centrifuge.
2. Operation without front or back panels.
3. Operation by non authorized personnel.
4. Operation with rotor not installed properly (refer to chapter 3.3).
5. Operation with overloaded rotors.
The load for a rotor is limited by its design and the max. speed (see
rotor/bucket engraving) and must not be exceeded. The rotors are intended
for liquids of max. homogeneous density of 1.2 g/cm
3
if centrifuged at max.
speed. If liquids of higher density are used, the speed must be reduced
accordingly (refer to chapter 7.1 "Mathematical relations").
6. Operation with rotors and adapters showing corrosion or other defects.
7. Operation of very corrosive substances which can cause damages to material
and affect mechanical strength of rotors and adapters.
8. Operation of rotors and accessories not allowed by the manufacturer. The
use of poor commodity goods is not recommended. At high speeds breaking
glass or bursting vessels can cause dangerous imbalances.
9. Operation in hazardous locations.
10. Operation with vessels of improper size.
11. Centrifugation of improper material.
12. Operation with partially filled plastic tubes in high-speed angle rotors.
13. Lifting or moving of the centrifuge during operation. Leaning against or resting
on the centrifuge is not allowed.
14. Do not place potential dangerous material - e.g. glass vessels containing
liquids - near the centrifuge.
15. Attention: Do not open cover and/or reach into rotor chamber unless the rotor
is at standstill. Never attempt to override the lid interlock system while the
rotor is spinning.
16. Such materials are prohibited which chemically interact vigorously.
17. Do not spin explosive or inflammable materials.