![background image](http://html1.mh-extra.com/html/sigma/10208/10208_operating-manual_1267881045.webp)
Version 04/2008, Rev. 1.18 of 07/06/2012
page 45 of 65
Translation of the original operating manual
7.1.3
Rotor, Buckets, and Multiple Carriers
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).