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Description
PROTECTIVE RING
A structural steel ring surrounding the rotor chamber provides full
operator protection.
IMBALANCE DETECTOR
An imbalance detector monitors the rotor during the run, causing
automatic shutdown if rotor loads are severely out of balance. At
low speeds, an incorrectly loaded rotor can cause an imbalance.
Rotor instability can also occur if the instrument is moved, or if it is
not resting level on the floor (see Section 4,
TROUBLESHOOTING
).
OVERSPEED AND ROTOR IDENTIFICATION SYSTEM
A rotor identification system prevents the installed rotor from running
above its maximum rated speed. During acceleration the micropro-
cessor checks the magnetic rotor identification. If the system
identifies a rotor different than the one entered by the user, and the
set speed is above the maximum for the identified rotor, the system
will reduce the set speed to the maximum for the installed rotor.
A second check, based on rotor physical properties, is performed
during acceleration. Speed is limited to the maximum safe speed of
the identified rotor group.
➠
NOTE
Some rotors manufactured before January, 2002,
may not have magnets installed. Based on the
rotor property grouping, these rotors may be
limited to a lower speed than the rated speed.
NAME RATING PLATE
A name rating plate is affixed to the rear of the instrument. Always
mention the serial number and model number when contacting
Beckman Coulter regarding your Avanti J-E centrifuge.
