8 Maintenance and service
Version 09/2015, Rev. 1.3 of 02/03/2017
Translation of the original operating manual, WZG6001-e150401
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8.1.2.1 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.
Plastic accessories must not be greased!
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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 tie-down screw after cleaning with grease for load bearing
bolts (part no. 69CE0006) 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. 69CE0006) to the load bearing bolts of
the rotor and buckets after each cleaning.
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