Description
General Description
Allegra X 22 and 22R are Tabletop centrifuges designed for laboratory use. The Allegra X 22R is the refrigerated version and the Allegra X 22 is the non-refrigerated version. These laboratory centrifuges are microprocessor controlled.
1.3.1 Rotors and Rotor Chamber
Make sure that only flawless rotors are permitted for use with the specific centrifuge. Insure that the rotor chamber and seals are not damaged.
Rotor Chamber
The rotor chamber must be clean and free of foreign particles. It is advisable when using the refrigerated centrifuges to open the lid after centrifuging in order to allow frost and ice to melt and vaporize.
After glass breakage, considerable contamination can occur. In this case the rotor must be removed and carefully cleaned. Glass splinters must be removed entirely. Otherwise, the sealing and rotor chamber surface may be damaged. After a short period of operation with glass splinters present a black metallic abrasive dust is produced, contaminating the centrifuge.
Glass splinters can damage the rotor surface so heavily that the protective anodizing layer is removed and corrosion sets in.
Rotors showing signs of corrosion may no longer be used!
In order to avoid such damage remove all traces of glass breakage. Larger splinters can be removed by hand with special protection (gloves, tweezers, etc.). Smaller glass particles can easily be removed by applying vacuum grease or a similar substance to a palm-sized area and then run the centrifuge at medium speed. Afterwards wipe off the vacuum grease with the stuck on splinters. If required, repeat this procedure. Check the state of the seals and grommets. Also check the boot between the drive and rotor chamber as these are of great importance for error free centrifuge operation.
Seals also play an important part in the rotor function. An uncontrolled air flow above the rotor could destabilize the system and cause damage.
Refrigeration performance may be severely limited by foreign air flows, which can cause considerable frost and ice formation.
NOTE:Perform regular maintenance on seals and grommets, replace damaged seals.
