6-16HS
8 Maintenance and service
Version 06/2012, Rev. 1.0 • sb-kue
55
Translation of the original operating manual
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8.1.3
Rotors, buckets and carriers
Rotors, buckets and carriers 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.
• Grease the rotor, lid seal, and adapters at least once a week with
slushing oil (part no. 70104).
• Grease the rotor tie-down screw after cleaning with grease for load
bearing bolts (part no. 70284) and spread the grease with a cloth.
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8.1.4
Load bearing bolts
Only greased load bearing bolts ensure the even swinging of the buckets
and, therefore, the quiet run of the centrifuge. Non-greased bolts can lead
to a system shut-down due to imbalances.
Apply a small quantity of grease (part no. 70284) to the load bearing bolts
of the rotor and buckets after each cleaning.
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8.1.5 Glass breakage
CAUTION
In the case of glass breakage, immediately remove all glass particles (e.g.
with a vacuum cleaner). Replace the rubber cushions since even thorough
cleaning will not remove all glass particles.
Glass particles will damage the surface coating (e.g. anodising) of the
buckets, which will then lead to corrosion.
Glass particles in the rubber cushions of the buckets will cause glass
breakage again.
Glass particles on the pivot bearing of the load- bearing bolts prevent the
buckets and carriers from swinging evenly, which will cause an imbalance.
Glass particles in the rotor chamber will cause metal abrasion due to the
strong air circulation. This metal dust will not only pollute the rotor chamber,
rotor, and materials to be centrifuged but also damage the surfaces of the
accessories, rotors, and rotor chamber.