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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 rotor grease - 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 must be avoided, such as: 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, and Accessories:
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Turn the device off and disconnect from the power supply before beginning any cleaning or
disinfecting. Do not pour liquids into the housing interior.
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Spray disinfectant on the device.
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Thorough cleaning not only has its purpose in hygiene, but also in avoiding pollution based
corrosion.
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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).
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After cleaning, please ensure all parts are dried thoroughly either by hand or in a hot-air cabinet
(Max. Temperature + 50°C/122°F).
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It is necessary to coat anodized aluminum 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!
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Connect the unit to the power supply after the equipment is completely dry.
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Do not implement disinfection with UV-, beta- and gamma-rays or other high energy radiation.
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Metal rotors can be autoclaved.
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Rotor lid and adapters can also be autoclaved (Max. 121°C/250°F. 20 min).
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The tube racks are made of PP and cannot be autoclaved at 134°C/273°F.
For additional information on aerosol-tight rotors, lids and buckets please see below.
The aerosol tightness of rotors. rotor lids. buckets and caps have been tested and certified by the
"TÜV Nord CERT GmbH. Certification Body Consumer Products. Essen (Germany)" in accordance
with Annex AA of IEC 61010-2-020. The certificates can be downloaded on our webpage.
www.hermle-labortechnik.de. Aerosol-tight rotors and buckets are marked with the label "aerosol-
tight".
ATTENTION: Autoclaving, mechanical stresses and contamination, by chemicals or other
aggressive solvents can impair the aerosol-tightness of the rotors and buckets.
© Hermle Labortechnik GmbH
ZK496_V1.22_eng
MAINTENANCE
31
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