Because Eppendorf no longer hosts the 5402 manual on its primary support site, users must turn to trusted secondary sources or internal archives. Here’s a reliable approach:
Warning: Avoid generic manual-hosting sites that offer undated or watermarked copies. If the manual does not show a “Revision Date” or “ECN (Engineering Change Notice) number,” it is likely the original, incomplete version.
The manual describes the analog/digital hybrid interface typical of this era:
✅ Rotor cone clean and lightly greased
✅ Tubes filled symmetrically, masses matched
✅ No cracks in rotor or buckets
✅ Lid latch engages smoothly
✅ Mains cable undamaged
✅ Log run time and speed in lab journal (for rotor lifetime tracking)
Disclaimer: This document is a user-generated supplement and is not an official Eppendorf publication. Always refer to your original Eppendorf 5402 manual for factory specifications. For any repair involving high-speed rotating parts, consult a qualified centrifuge technician.
Eppendorf 5402 is a legacy refrigerated microcentrifuge known for its durability and precise temperature control in laboratory settings. While its original paper manuals are increasingly rare, updated digital versions and operational guides ensure this machine remains a staple for modern molecular biology and clinical research. Overview and Capabilities
The 5402 is designed for high-speed separation of small sample volumes, typically utilizing 1.5 mL and 2.0 mL Eppendorf tubes . Key technical specifications include: Speed Range: Variable speeds up to 14,000 RPM. Temperature Control:
Maintains samples between -4°C and 40°C, crucial for preserving heat-sensitive biological materials like enzymes or RNA. Timer Settings: Digital control from 1 to 99 minutes. Operational Best Practices
Adhering to updated safety and operational protocols is essential for device longevity and user safety: Balancing Samples:
Always load tubes symmetrically. If an odd number of samples exists, use a "balance tube" filled with water to ensure even weight distribution. Lid Safety: The lid must be secured before starting. Many Eppendorf centrifuges
include safety interlocks that prevent operation while open to reduce aerosol risks. Cooling Management: For refrigerated models like the
, use the "Fast Cool" or "Pre-cool" function (if available) before starting a run to ensure the rotor reaches the target temperature Wait Times:
When handling biohazardous materials, wait at least 10 minutes after the rotor stops before opening the lid to allow any generated aerosols to settle. Troubleshooting and Maintenance
Standard error codes and maintenance steps for Eppendorf microcentrifuges often apply across related models like the 5417 or 5424. Common issues include: Eppendorf 5402 Refrigerated Centrifuge - G-M-I, Inc.
Best for buy/sell groups or lab technician forums. eppendorf 5402 manual updated
Post: Heads up to anyone maintaining an Eppendorf 5402! 🛠️
I was looking for a troubleshooting code today and realized the manual for the 5402 has been updated. If you have an old saved copy on your desktop, you might want to swap it out. The new version is much cleaner regarding the technical specs and error codes.
If you have a link to the new PDF, feel free to drop it in the comments to help out the group! 👇
The original manual required complex menu diving. The updated quick-reference suggests:
The Eppendorf 5402 manual serves not only as an operating guide but as a safety blueprint. The "updated" versions of this documentation refine the safety interlocks and troubleshooting procedures to align with modern laboratory safety standards (CE marking).
For laboratories still operating the 5402, strict adherence to the rotor maintenance schedule and brush inspection (if applicable) is the primary determinant of longevity. The centrifuge remains a robust "workhorse" capable of precise pelleting, provided the user respects the kinetic limits and balancing protocols outlined in the technical documentation.
The Eppendorf 5402 is a legacy refrigerated microcentrifuge designed for high-performance separation of temperature-sensitive samples in molecular biology and clinical research. While this specific model has been largely succeeded by newer iterations like the Centrifuge 5420, maintaining an updated manual and protocol is essential for labs still utilizing this reliable workhorse. Technical Specifications and Capabilities
The Eppendorf 5402 is optimized for 1.5 mL and 2.0 mL tubes, offering precise control over speed and thermal conditions.
Speed Range: Adjustable from 0 to 14,000 RPM in 100 RPM increments. Maximum RCF: Up to Temperature Control: A broad cooling range from -9∘Cnegative 9 raised to the composed with power C 40∘C40 raised to the composed with power C
Fast Cooling Function: Capable of dropping the rotor chamber from 20∘C20 raised to the composed with power C 4∘C4 raised to the composed with power C in approximately 10 minutes.
Rotor Capacity: Standard F-45-18-11 rotor accommodates 18 tubes (1.5 mL or 2.0 mL) at a 45∘45 raised to the composed with power
Timer: Digital controls allow for run times between 1 and 99 minutes, plus a momentary "Short" spin mode. Operational Guidelines
To ensure sample integrity and equipment longevity, follow these core operational steps based on official Eppendorf safety standards:
Symmetrical Loading: Always load the rotor symmetrically to prevent imbalance, which can cause severe mechanical damage. Because Eppendorf no longer hosts the 5402 manual
Lid Security: Ensure the rotor and rotor lid are fastened securely before starting a run.
Chemical Limits: Do not centrifuge liquids with a density higher than
Soft Start/Stop: Utilize the "Soft" mode for sensitive samples to prevent resuspension during acceleration or deceleration. Maintenance and Troubleshooting
Regular maintenance is the primary way to prevent common errors, such as sensor failures or rotor detection issues. Eppendorf 5417R Refrigerated Centrifuge - Acme Revival
Error 3: No rotor detected. Solution is to insert the rotor. Acme Revival Centrifuge 5420 - Eppendorf
The Eppendorf 5402
is a legacy refrigerated microcentrifuge known for its robust performance in handling temperature-sensitive samples in molecular biology and clinical research. While newer models like the Centrifuge 5420 have succeeded it, the
remains a common fixture in labs as a reliable refurbished unit for DNA precipitation and cell lysate separation. Key Performance Specifications Variable Speed Range: Achieves speeds up to 14,000 rpm.
Temperature Control: Adjustable from -4°C to 40°C (some documentation indicates a range down to -9°C).
Fast Cool Function: Capable of cooling the rotor chamber from ambient temperature down to 4°C in approximately 10 minutes.
Rotor Capacity: Typically accommodates an 18-place rotor for 1.5 mL and 2.0 mL tubes.
Digital Interface: Features digital controls for precise adjustment of time (1 to 99 minutes), temperature, and speed. User Experience and Operational Insights Reliability: The
is often described as an "old school" workhorse. Its brushless, maintenance-free motor design contributes to its longevity in high-throughput environments.
Noise and Ergonomics: Like most Eppendorf models, it is designed for low noise levels to minimize lab disruptions. Brake Switch: A toggle switch for "Fast" or "Off
Critical Maintenance: For units still in operation, regular cleaning of the rotor and seals with distilled water and mild detergents is essential to prevent corrosion. Users should ensure symmetric loading for balance to avoid drive errors. Common Issues and Troubleshooting Refrigeration Failure: A common failure point in older
units is the cooling function, which may fail while the centrifuge still operates at room temperature.
Rotor Recognition: If the unit displays errors like Error 3 or Error 23, it typically indicates the system is not detecting the rotor or there is a drive recognition fault; restarting the device often resolves minor glitches.
For those looking for current documentation, technical guides and software updates are available through the Eppendorf Download Center. ? Centrifuge 5420 - Centrifuge for Eppendorf tubes
The Eppendorf 5402 is a legacy refrigerated microcentrifuge designed for temperature-sensitive samples in molecular biology and clinical research. Since this model is no longer in production, "updated" information typically refers to newer maintenance protocols or current digital archives of the original manual. Core Specifications & Features
The 5402 was built for reliability with a small benchtop footprint:
Performance: Variable speeds up to 14,000 RPM (approx. 16,000 x g).
Capacity: Typically equipped with the F-45-18-11 rotor, holding (18) 1.5 mL or 2.0 mL tubes.
Temperature Range: Cools from -9°C to 40°C. It features a "Fast Cool" function that can reach 4°C within 10 minutes.
Controls: Digital readout for time (1–99 minutes), speed, and temperature. Operational Guidelines
For safe operation, follow these standard procedures found in Eppendorf's historical documentation: Eppendorf 5402 Refrigerated Centrifuge - G-M-I, Inc.
As of 2026, Eppendorf no longer actively hosts the full 150-page original manual due to the model being "phase-out legacy." However, they provide a condensed "Operating Instructions Update" (PN 5402-999-00) – a 22-page critical safety addendum. This is the definitive updated document.
Warning: Avoid third-party PDF repositories. Many host a corrupted or pre-2005 version that lacks critical rotor life warnings.