This guide is for informational purposes. Always defer to the official Eppendorf 5402 manual for specific serial-number-related guidance. If your centrifuge displays smoke, sparks, or unusual odors, unplug immediately and retire the unit – no manual can fix catastrophic electrical failure.

Physical manuals occasionally appear on auction sites. Search for "Eppendorf 5402 original manual." Expect to pay $20–$50 for a mint condition copy.

If you encounter errors (common to similar legacy models like the 5417), check the following:

An electronic lock that prevents opening while the rotor is in motion. 3. Basic Operating Procedures