MAINTENANCE
24 Z366_V1.18_eng © Hermle Labortechnik GmbH
3. MAINTENANCE
3.1 Maintenance and Cleaning
3.1.1 General Care:
Maintenance of the centrifuge is dependent on prolonging the life of the rotor, the rotor chamber and
the rotor accessories. Please be sure to clean the accessories, especially the sealing of the aerosol-
tight rotors and insert bolts, of swing out rotors. Following, lubricate the bolts or sealing, with the
recommended HERMLE Rotorgrease - Order No.: 38-5656.
Please pay special attention to anodized aluminum parts. Breakage of rotors can be caused by the
slightest damages.
In case of rotors, buckets or tube racks becoming in touch with corrosive substances, the affected
area must be cleaned, thoroughly.
Corrosive substances, such as, must be avoided: alkalis, alkaline soap solutions, alkaline amines,
concentrated acids, solutions containing heavy metals, water-free chlorinated solvents, saline
solutions, e.g. salt water, phenol, halogenated hydrocarbons.
Cleaning – Units, Rotors, Accessories:
- Turn the device off and disconnect from the power supply, before beginning any cleaning or
disinfecting. Do not pour liquids into the housing interior.
- Spray disinfectant on the device.
- Thorough cleaning not only has its purpose in hygiene, but also in avoiding pollution based
corrosion.
- In order to avoid damaging anodized parts, such as rotors, reduction plates etc.; only pH-neutral
Detergents, with a pH-value of 6-8, may be used for cleaning. Alkaline cleaning agents must
not be used, (pH-value > 8).
- After cleaning, please ensure all parts are dried thoroughly, either by hand or in a hot-air cabinet
(Max. Temperature + 50°C/122°F).
- It is necessary to coat anodized aluminium parts with anti-corrosion oil regularly, in order to
increase their life-span and reduce corrosion predisposition.
- Due to humidity or not hermetically sealed samples, condensation may form. The condensation
has to be removed from the rotor chamber, with a soft cloth regularly.
The maintenance procedure has to be repeated every 10 to 15 runs, but at least once a week!
- Connect the unit to the power supply, after the equipment is completely dry.
- Do not implement disinfection with UV-, beta- and gamma-rays or other high energy radiation.
- Metal rotors can be autoclaved.
- Rotor lid and adapters can also be autoclaved, (Max. 121°C/250°F, 20 min).
- The tube racks are made of PP and cannot be autoclaved, at 134°C/273°F.
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