Chapter 4 Operation; Reducing Speed For Loads In Excess Of Design Mass - Thermo Scientific RC 6 Plus Operation Instructions Manual

OPERATION
Chapter 4
This chapter provides step-by-step instructions on how to set the centrifuge
power ON, open the chamber door, and perform a run in the normal mode. It
also describes how to precool the rotor. Read and observe the Important Safety
Information supplied on page iii at the front of this manual.
The chapter contains supplementary information on how to calculate relative
centrifugal force (RCF); how to do a test run for low speed and low temperature
operation; and what will cause an ENTRY ERROR.
The controls and displays referred to in this chapter are described in detail in
Chapter 3.
Reducing Speed
for Loads in
Excess of Design
Mass
WARNING
1. Use specified Thermo Fisher Scientific rotors only.
2. Do not use corroded, scratched or cracked rotors, buckets and assemblies.
Check that the rotor, buckets and assemblies are free of such abnormalities
before operation.
3. Do not exceed the maximum rated speed of the rotor or buckets in use.
4. Failure to reduce rotor speed when compartment load exceeds maximum
allowable compartment load can lead to rotor failure and result in personal
injury and/or centrifuge damage.
Each rotor has a maximum allowable compartment mass (defined in Appendix
and in the rotor manual). To prevent rotor failure, the total contents of any
compartment, including specimen, tubes, sealing assembly and adapters must
not exceed the specified maximum compartment mass unless rotor speed is
reduced proportionately. Strict adherence to the maximum allowable
compartment mass or reduced rotor speed is required to prevent rotor failure.
If the maximum compartment mass is greater than value specified for the rotor,
use the following formula to determine the reduced rotor speed required:
Thermo Fisher Scientific RC-6 PLUS 4-1