Beckman Coulter Avanti J-26XP Instructions For Use Manual page 31

The following information pertains to JCF-Z rotors manufactured before March, 1997, and to JCF-Z
rotors that have not been modified at the factory.
• When the bearings in the JCF-Z rotating seal assembly get old or worn, the resulting "drag" on
the bearings changes the rotor's dynamic properties, making them similar to those of several
Beckman Coulter fixed angle rotors. If rotor misidentification occurs when your JCF-Z rotor is
used, first perform three runs from 0 to 5000 rpm and back to 0 rpm. If rotor misidentification
recurs, replace the bearings. See the JCF-Z rotor instruction manual (publication JCFZ-IM) for
bearing replacement instructions. Be sure to follow instructions in the next paragraph below
for "wearing in" the bearings.
• On the first few uses of a new JCF-Z rotor, or when the bearings have been replaced in an older
JCF-Z rotor, lubrication has not yet been thoroughly distributed around the bearings in the
bearing housing. The excess lubrication produces drag on the bearings, which can change the
rotor's dynamic properties enough to cause rotor misidentification. To "wear in" the bearings
and distribute the lubrication, perform three runs from 0 to 5000 rpm and back to 0 rpm.
NOTE
If the JCF-Z rotor is misidentified, the run speed will be limited to the maximum speed for the identified
rotor. (The maximum speed for the JCF-Z rotor is 20 000 rpm.)
J326XP-IM-5AB
Specifications and Preinstallation Requirements
Using J2 Series Rotors in the Avanti J
1
1-15