Other Possible Problems; Emergency Access - Beckman Coulter Allegra 21 Series Instruction Manual

OTHER POSSIBLE PROBLEMS

EMERGENCY ACCESS

to determine the nature of the problem and recommended actions. If you
are unable to correct the problem, call your Beckman Coulter Field Service
representative. To help diagnose and correct the problem, try to gather as
much information about the situation as you can:
• Write down the error number that appears on the display.
• Note the operating situation when the error occurred (rotor in use,
speed, load type, etc.).
• Note any unusual environmental and/or operating conditions (ambient
temperature, voltage fluctuations, etc.).
• Add any other information you think may be helpful.
Possible malfunctions that may not be indicated by diagnostic messages
are described in Table 4-2, along with probable causes and corrective
actions required. Possible causes for each problem are listed in the
probable order of occurrence. Perform the recommended corrective action
in sequence, as listed. If you are unable to correct the problem, call your
Beckman Coulter Field Service representative.
If the facility power fails only momentarily, the centrifuge will resume
operation when power is restored and the rotor will return to set speed.
However, if the rotor comes to a complete stop you will have to restart the
run when the power is restored. In the event of an extended power failure,
it may be necessary to trip the door-locking mechanism manually to
remove the rotor and retrieve your sample (see Figure 4-1).
1. Turn the power switch to off (O) and disconnect the power cord from
the main power source.
!
WARNING
Never attempt to override the door interlock
system while the rotor is spinning.
Troubleshooting
4-3