Rotor Recognition System - Fisher Scientific MARATHON 3000 Operation Manuals

3.4

Rotor Recognition System

Condition
Input Speed value exceeds
maximum allowable
Input RCF value exceeds
maximum allowable
Input Radius value exceeds
maximum allowable
No Rotor Installed
Rotor Installed but incomplete
or no rotor signature is read
Faulty Rotor Recognition
System
Incorrect rotor signature is read
(i.e. does not correspond to one
in the software database)
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The Marathon 3000(R) is equipped with a fully automatic
rotor recognition system that internally detects and
identifies the rotor installed. Since the Marathon 3000(R)
was designed to spin a variety of rotors, its software
database contains the maximum settable values for speed,
RCF, and radius for each. This enables the centrifuge to
check and ensure that these parameters as entered by the
user do not exceed the prescribed safety limits for the
specific rotor.
If a user has input a value for speed, RCF, or radius that
exceeds the specified limit, the control panel will display a
message and the unit will coast to a stop. Below is a table
of condition and the corresponding message that will
appear in the speed display window:
To clear an error message relating to rotor recognition, the
user must press one of the following buttons:
• STOP
• Power Switch (on the side of the unit)
MARATHON Series Operation Manual
21
Message
"SPD" toggled with the max.
allowable speed setting for the
rotor
"rCF" toggled with the max.
allowable RCF setting for the
rotor
"RAD" toggled with the max.
allowable radius setting for the
rotor
"HEAD"
"HEAD"
"HEAD"
"Err14"