OHAUS FC5706 - 3.1.4 Disinfection of Aluminum and PP Rotors

CHAPTER 3 MAINTENANCE PROCEDURES
FC5706 Centrifuge Service Manual 3-3 Ohaus Corporation www.ohaus.com
3.1.4 Disinfection of Aluminum-rotors
In case of infectious material spilling into the centrifuge, the rotor and rotor chamber have to be
disinfected right after the run. Rotors may be autoclaved at a maximum temperature of 121°C.
3.1.5 Disinfection of PP-rotors
Autoclaving
The recommended time for autoclaving: 15 – 20 min at 121°C (1 bar)
Attention: The sterilization time of 20 min. must not be exceeded.
Sterilization again and again will cause reduction of the mechanical
resistance of the plastic material
Before the autoclaving the PP-rotor and adapter must thoroughly be cleaned to avoid the
burning in of dirty residues.
You can disregard the consequences of some chemical residues to plastic materials at ambient
temperatures. But at the high temperatures of the autoclaving those residues may corrode and
destroy the plastic. The objects must be thoroughly washed up with distilled water after the
cleaning but before the autoclaving. Residues of any cleaning liquids may cause fissures,
whitening and stains.
Gassterilization
Boxes, bottles and rotors may be gassterilized with Ethylenoxyd. According to the duration of
the application you may give long enough an airing to the items after the sterilization and before
using them again.
Attention: Because the temperature may rise during the sterilization,
rotors, boxes and bottles must not be closed respectively must be totally
unscrewed
Chemical sterilization
Bottles, boxes and rotors may be treated with the usual liquid disinfectants.
Attention: Before applying a different decontamination method than
recommended by the manufacturer, contact the manufacturer to ensure
that it will not damage the unit or the rotor.