The manual's operational flowchart is simple but precise:
Speed knob. The analog dial corresponds to 1,000 rpm increments (1 = ~1000 rpm, 14 = 14,000 rpm). Pro tip from the manual: Never run below 5,000 rpm for more than 15 minutes to avoid motor resonance.Time knob to the desired minutes. The "0" position is for short spins (push-to-spin); continuous operation is marked by an infinity symbol.Start button. The rotor accelerates to set speed.Stop.Eppendorf maintains a support portal. Navigate to eppendorf.com > Support > Downloads. Search for "5402." Note that Eppendorf often classifies the 5402 under "Historical Products." You may need to register a free account to access legacy manuals. eppendorf 5402 manual
If digital searches fail, email Eppendorf customer support. Provide the serial number (located on the back panel of the centrifuge). They can send a scanned copy, though response times for legacy products may take 5–7 business days. The Essential Guide to the Eppendorf 5402 Manual: