Load-Bearing Bolts; Glass Breakage - Sigma 2-16KC Operating Manual

2-16KC
Maintenance and Service
8.1.4

Load-bearing Bolts

8.1.5

Glass Breakage

48
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 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).
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 the buckets after each cleaning.
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. anodizing) 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.
In order to completely remove the glass particles and the metal dust
from the rotor chamber:
Grease the upper third of the rotor chamber with e.g. Vaseline.
Then, let the rotor rotate for a few minutes at a moderate speed
(approximately. 2,000 rpm). The glass and metal particles will
now collect at the greased part.
Remove the grease with the glass and metal particles with a cloth.
If necessary, repeat this procedure.
Version 03/2010, Rev. 1.7 of 27/01/2012
Translation of the original operating manual