Eppendorf 5402 Manual Updated |work| Jun 2026

Ensure the cooling system is not obstructed and that the lid is closed properly to maintain set temperatures, especially during high-speed runs .

| Symptom | Probable cause | Solution | |---------|---------------|----------| | Lid won’t open | Rotor still spinning or mechanical latch stuck | Wait 2 min. If still locked: unplug unit, wait 10 sec, replug → lid solenoid releases. | | Display shows “E” | Overload or electronic fault | Reduce load. If persists, internal fuse (F1, 1.6A slow-blow on PCB) may be blown. | | Excessive vibration | Unbalanced load or bent rotor | Rebalance. Remove rotor, roll on flat surface – wobble = replace rotor. | | No start, display “0” | Lid switch failure | Bypass not recommended. Replace lid microswitch (Eppendorf part 5402 800.011). | | Grinding noise | Motor bearing wear | Replace motor (service only). Average bearing life: ~5,000 hours at max speed. | eppendorf 5402 manual updated

The original manual had a basic error table. The includes a comprehensive diagnostic matrix. Here are the most relevant updates: Ensure the cooling system is not obstructed and

The Eppendorf 5402 Go to product viewer dialog for this item. | | Display shows “E” | Overload or