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Refrigerated Centrifuge Sigma 1-14K
8 Maintenance and service
Version 05/2010, Rev. 2.12 of 15/08/2016 • sb
45 / 70
Translation of the original operating manual, part no. 0700102
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8.1.3.1 Plastic accessories
The chemical resistance of plastic decreases with rising temperatures (see
chapter 11.4 - "Resistance data").
• If solvents, acids, or alkaline solutions have been used, clean the plastic
accessories thoroughly.
WARNING
Plastic accessories must not be greased!
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8.1.4 Rotors
The rotors are produced with the highest precision, in order to withstand the
permanent high stress from high gravitational fields.
Chemical reactions as well as stress-corrosion (combination of oscillating
pressure and chemical reaction) can affect or destroy the metals. Barely
detectable cracks on the surface can expand and weaken the material
without any visible signs.
• Check the material regularly (at least once a month) for
– cracks
– visible damage of the surface
– pressure marks
– signs of corrosion
– other changes.
• Check the bores of the rotors and multiple carriers.
• Replace any damaged components immediately for your own safety.
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8.1.5 Microhaematocrit rotor
• Remove the microhaematrocrit rotor for cleaning.
• Wipe the centrifuge chamber clean.
• Replace the rubber ring in the event of wear or glass breakage (part no.
16002 for rotor 11026).
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