7.1.3 Rotor, Buckets, and Multiple Carriers
Rotors, buckets, and multiple carriers are produced with highest precision, in
order to withstand the permanent high stress with 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.
• Protect the rotors, lid seals, and rubber cushions (if included) at least once
per week with the supplied slushing oil (part no. 70104).
• Grease the rotor tie-down screw with grease for load-bearing bolts (part no.
70284).
7.1.4 Load-bearing bolts
Only greased load-bearing bolts ensure the even swinging of the buckets, and
therefore, the quiet run of the centrifuge. Ungreased bolts can lead to a system
shut-down due to imbalances.
• Grease the load-bearing bolts of the rotor after each cleaning slightly with
grease for load-bearing bolts (part no. 70284).
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