Laboratory Centrifuge Sigma 3-16L
Laboratory Centrifuge Sigma 3-16L IVD
8 Maintenance and service
Version 03/2014, Rev. 2.22 of 24/10/2023 • sb
Original operating manual, part no. 0700902
Pos: 184 /100 Sigm a/100 BA Ze ntrifugen Sigma ( Standardmo dule)/080 Wartu ng und Instandh altung/080-0 010-0040-0 010 Tragbolze n mit Comfort Rot orbeschichtung (a ußer 2-7, 2- 16P, 2-16KL) @ 90\mod_1651 133147973_6 8.docx @ 9497 68 @ 4 @ 1
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8.1.3.1 Load bearing bolts
Rotors with Sigma "Comfort" rotor coating
The load-bearing bolts of some of the swing-out rotors offered by Sigma
Laborzentrifugen GmbH have an anti-friction coating. This coating
prevents friction between the buckets and bolts.
The bolts do not require any greasing during the service life of the coating
(see chapter 3.6.7.4 - "Service life of the Sigma "Comfort" rotor coating")!
All "Comfort" coated swing-out rotors have a "C" shown after their number
(see chapter 3.6.7.1 - "Marking of rotors and accessories").
A portfolio of the available rotors with "Comfort" rotor coating and
information on the service life of the coating can be found in the document
"Sigma Comfort rotor coating", which is provided with every rotor with
"Comfort" rotor coating.
Rotors without Sigma "Comfort" rotor coating
For rotors that do not have or no longer have an anti-friction coating, the
load-bearing bolts must be greased. Only greased load-bearing bolts
ensure a uniform swing-out of the buckets and, therefore, the smooth
operation of the centrifuge. Load-bearing bolts that are insufficiently
greased may cause the centrifuge to stop due to an imbalance.
• Clean the load-bearing bolts and bucket groove in order to remove the
old grease.
• Apply a small amount of heavy-duty grease for load-bearing bolts (ref.
no. 71401, see the following picture) to both load-bearing bolts of a
bucket.
Fig. 32: Sufficient quantity of grease for one bolt
• Install the bucket and swing it manually back and forth once in order to
distribute the grease.
• Repeat this process with all the other buckets.
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