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25.2 Rotors and Attachments

25.2.1 Cleaning and care

• In order to prevent corrosion and material changes, rotors and accessories must be cleaned regularly with soap

or a mild detergent and a damp 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.

• In the case of biosafety systems (for further details of available biosafety systems see chapter

"Anhang/Appendix, Rotoren und Zubehör/Rotors and accessories"), the packing rings must be checked and

cleaned regularly (weekly).The sealing ring is to be replaced immediately upon indication of crack formation,

embrittlement or abrasive wear. In order to prevent the packing ring from twisting when opening and closing the

cover, the packing ring must be lightly rubbed with talcum powder or a rubber care product.

• 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 the accessory parts have to be checked on a monthly basis 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.

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.

25.2.2 Disinfection

• If infectious material should get on the rotors or accessories, they must be appropriately disinfected.

• Ingredients of suitable disinfectants:

glutaraldehyde, 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.

25.2.3 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.

25.2.4 Trunnions

With swing-out rotors the trunnions must be regularly lubricated (Hettich Lubricating Grease No. 4051) in order to

ensure consistent swinging out of the hangers.

25.2.5 Rotors and accessories with limited service lives

The use of certain rotors, hangers and accessory parts is limited by time.

These are marked with the maximum permitted number of operating cycles or with an expiration date and the

maximum permitted number of operating cycles or just with the expiration date; e.g.:

- "einsetzbar bis Ende:

ΙV. Quartal 2011 / usable until end of: ΙV. Quarter 2011" or

"einsetzbar bis Ende Monat/Jahr: 10/2011 / usable until end of month/year: 10/2011"

- "Max. Lauf Zyklen / max. cycles: 40000".

For safety reasons, rotors, hangers and accessory parts may no longer be used if either the indicated

maximum number of operating cycles or the indicated expiration date has been reached.

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Universal R-320 Operations Instructions Page 43

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