Rotors And Attachments; Cleaning And Care; Disinfection; Removal Of Radioactive Contaminants - Hettich ROTOFIX 32 A Bedienungsanleitung

EN
22.2

Rotors and Attachments

22.2.1

Cleaning and care


In order to avoid corrosion and changes in materials, the rotors and accessories have to be cleaned regularly
with soap or with a mild cleaning agent and a moist cloth. Cleaning is recommended at least once a week.
Contaminants must be removed immediately.

Ingredients of suitable detergents:
soap, anionic tensides, non-ionic tensides.

After using detergents, remove detergent residue by rinsing with water (only outside of the centrifuge) or wipe off
with a damp cloth.

The rotors and accessories must be dried directly after cleaning.

Angle rotors, container and hanger made of aluminium are to be lightly greased after drying using acid-free
grease, e.g. vaseline.

The sealing rings of bio-safety systems must be cleaned weekly.
The sealing rings are made of silicone. To guarantee the leak-tightness of the bio-safety systems, the sealing
rings must not be handled with talcum powder after cleaning or autoclaving.
Each time before using the bio-safety system, all parts of the bio-safety system must be visually inspected for
damage. In addition, the sealing ring(s) of the bio-safety system must be checked to make sure they are in the
correct installation position.
Damaged parts of the bio-safety system must be exchanged immediately.
If there are signs of crack formation, brittleness or wear, immediately replace the sealing ring in question. In the
case of lids with sealing rings which cannot be replaced, the entire lid must be exchanged.
For the available bio-safety systems, see the chapter "Appendix, Rotors and accessories".

In order to prevent corrosion as a result of moisture between the rotor and the motor shaft, the rotor should be
disassembled and cleaned at least once a month, and the motor shaft should be lightly greased.

The rotors and accessories have to be checked weekly for wear and corrosion. For swing-out rotors, it is
important to check the area of the lifting lugs, for hangers, the grooves and the base should be checked for
cracks.
Example: Crack in the groove area:
Rotors and attachments may no longer be utilised upon indication of wear and tear or corrosion.

Check the firm seating of the rotor on a weekly basis.
22.2.2

Disinfection


If infectious material should get on the rotors or accessories, they must be appropriately disinfected.

Ingredients of suitable disinfectants:
ethanol, n-propanol, ethyl hexanol, anionic tensides, corrosion inhibitors.

After using disinfectants, remove disinfectant residue by rinsing with water (only outside of the centrifuge) or wipe
off with a damp cloth.

The rotors and accessories must be dried directly after disinfection.
22.2.3

Removal of radioactive contaminants


The agent must be specifically labelled as being an agent for the removal of radioactive contaminants.

Ingredients of suitable agents for removing radioactive contaminants:
anionic tensides, non-ionic tensides, polyhydrated ethanol.

After removing the radioactive contaminants, remove agent residue by rinsing with water (only outside of the
centrifuge) or wipe off with a damp cloth.

The rotors and accessories must be dried directly after removing the radioactive contaminants.
44/104