If your Beckman Coulter Optima ultracentrifuge flags d63; it is an indication that the drive thermostat mounted on the drive has overheated (causing an open circuit) during normal run, or that it did not cool down and get deactivated after a 5 minute waiting period on power up. When a power fail diagnostic occurs during a normal run, the ultracentrifuge will shut down with brake.

If this fault occurs, a Beckman trained and experienced expert will make it a point to check the drive, drive oil, drive fans,  and the drive control system of the ultracentrifuge.

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