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Hettich Rotina 420R Refrigerated Centrifuge, Cat. #: 4706-20
The Hettich Rotina 420R Refrigerated Centrifuge, Cat. #: 4706-20 is engineered for handling large volumes while maintaining a compact footprint, making it suitable for labs with significant sample throughput yet limited space. This versatile centrifuge has a maximum capacity to accommodate up to 4 x 600 ml, 140 blood collection tubes, or 16 microtiter plates, making it perfectly suited for demanding applications in clinical chemistry, biotechnology, and life science research. It achieves a maximum speed of 15,000 RPM and a maximum relative centrifugal force of 24,400 x g, ensuring efficient sample processing. Designed with user convenience in mind, the Rotina 420R features an ergonomic control panel that simplifies daily operations. It offers easy rotor changes, automatic lid locking, and 99 program storage spaces, enhancing its functionality and user-friendliness. The advanced C control panel allows for intuitive parameter selection using symbol keys, adjustments with a control knob, and easy program recording.
Safety features include motor and chamber overheating protection, emergency lid lock release, and imbalance switch-off, ensuring secure and reliable operations. Additional functionalities include infinitely variable temperature adjustments from -20°C to +40°C, stand-by cooling, lid locking and holding, lid drop protection, and automatic rotor recognition. This 4706-20 model also supports nitrogen flushing for centrifugation of reactive substances or those unstable in aerial oxygen, which can be monitored through a control system for oxygen concentration (not included). Please Note: A Rotor is NOT included with this centrifuge and is required for operation. This centrifuge also operates from 200-240V.All of our equipment is in excellent condition and will be fully tested to perform at factory specifications before being shipped.
The Hettich Rotina 420R Refrigerated Centrifuge, Cat. #: 4706-20 includes:
- > NIST Centrifuge Calibration and Preventative Maintenance Report
- > Power Cord
- > Operator's Guide
- > Full 180 Day Parts and Labor Warranty
Hettich Rotina 420R Refrigerated Centrifuge, Cat. #: 4706-20 Specifications
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Maximum Speed
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15,000 RPM
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Maximum RCF
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24,400 x g
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Maximum Capacity
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4 x 600ml
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Temperature Range
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-20C to 40C
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Timer
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1 minute to 99 hours 59 minutes, continuous, or short cycle mode
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Acceleration Rates
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9
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Deceleration Rates
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9
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Program Storage
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99
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Noise Level
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≤ 58 dBa
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Refrigerant
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R452A
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Maximum Kinetic Energy
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24,000 Nm
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Dimensions (W x D x H)
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28.1 x 25.7 x 16.7 in. (71.3 x 65.4 x 42.3 cm)
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Weight
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237 lb. (107.5 kg)
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Electrical Requirements
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200-240V, 50Hz, 7.0A
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- Door Latch Assembly Checked for Full Function
- Door Hinges are Checked and Lubed as Needed
- Drive Belt is Checked for Rips and Tears and Replaced if Needed
- Rotors and O-rings are Lubed as Needed
- Lamps and Display are Checked and Replaced if Dim
- Line Cord is Checked for Signs of Fray or Damage and Replaced Accordingly
- Internal Circuitry is Checked for Faulty/Shorted Components and Replaced Accordingly
- Confirm the power supply output voltages match specified requirements for stable distribution to all internal components
- Measure and verify voltages at PCB test points to ensure accurate power delivery and circuit integrity
- Confirm rotor compatibility with the centrifuge model and check that rotor detection systems recognize the rotor type
- Inspect the exterior for any cosmetic or structural damage that could affect performance or safety
- Check the door mechanism alignment to ensure secure and smooth opening and closing
- Inspect and replace the gas strut with an OEM part to maintain proper door support and safety
- Examine the rotor chamber bowl for dents or damage and replace as needed to ensure safe operation
- Replace and confirm full functionality of all lid lock switches to maintain secure closure
- Inspect and lubricate the door lock mechanism, applying grease to the lid lock rail for smooth operation
- Test compressor functionality (if applicable) to ensure proper operation and consistent temperature control
- Conduct an 8-12 hour cycle test to validate consistent performance over prolonged use
- Confirm rotor motor stability, check for unusual noise, and assess mechanical integrity during operation
- Inspect the condensation drain and clear any clogs to prevent moisture buildup in the rotor chamber
- Verify RPM accuracy using an NIST-traceable tachometer and perform calibration as necessary
- Check the centrifuge error log to ensure zero recorded issues, confirming system reliability
Technician Inspection and Recertification Checklist: Centrifuges
The Following Checklist Is to Be Performed on All Incoming and Outgoing Pieces of Equipment
| Task |
Completed? |
Remarks? |
| Confirm power supply output voltages match specified requirements |
Completed |
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| Measure and verify voltages at PCB test points for accuracy |
Completed |
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| Confirm rotor compatibility and detection for proper identification |
Completed |
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| Inspect exterior for cosmetic or structural damage |
Completed |
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| Check door mechanism alignment for secure opening and closing |
Completed |
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| Inspect and replace gas strut with OEM part as needed |
Completed |
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| Examine rotor chamber for dents or damage and replace if necessary |
Completed |
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| Replace and confirm functionality of all lid lock switches |
Completed |
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| Lubricate door lock mechanism and lid lock rail for smooth operation |
Completed |
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| Test compressor (if applicable) for proper operation and cooling |
Completed |
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| Run 8-12 hour cycle test to ensure consistent performance |
Completed |
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| Check rotor motor for stability, noise, and integrity |
Completed |
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| Inspect and clear condensation drain to prevent buildup |
Completed |
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| Verify RPM accuracy with NIST traceable tachometer and calibrate |
Completed |
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| Check centrifuge error log for zero recorded issues |
Completed |
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To View More of Our Recertification Protocol Click Here
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