4
Rotor Loading
Cycle Counter
4-4
75003621 BIOShield
TM
720
Thermo Scientific
n
adm
= admissible speed
n
max
= maximum speed
Cycle Counter
The lifetime of rotors and buckets is dependent on the amount of mechanical load. Do not exceed
the number of cycles recommended for rotors and buckets.
The maximum number of cycles is given in the rotor table in the rotor specification section.
The maximum number of cycles for buckets is marked on the buckets themselves.
Service life examples
750
4987
770
4922
Actual Load (g/bucket)
RPM
max
n
adm
n
max
Maximum permissible load
Effective load
----------------------------------------------------------------------
=
WARNING
Replace the rotor when the specified number of cycles is reached. Due to the
mechanical load
,
a rotor can break and thus damage the centrifuge.
Usage profile
Maximum service life at 30,000 cycles
frequent use
20 runs / day
220 days / year
7 years
