1. Introduction and Product Overview
The Hettich 32ACellCulture6 model, part of the Rotofix 32A series, is a robust variable-speed benchtop centrifuge designed for cell culture applications. It is engineered for efficient separation of fluids with different densities, commonly used for blood and DNA samples in medical, industrial, research, academic, and clinical laboratories.
Key features include:
- Variable-speed operation from 500 to 4,000 rpm.
- Equipped with a six-place swing-out rotor, six buckets, and six 15mL adapters.
- Durable metal housing and lid.
- Stainless-steel inner bowl for easy cleaning.
- Automatic rotor type sensing and imbalance shut-off for enhanced safety.
- Non-refrigerated design.
2. Safety Information
Always adhere to the following safety guidelines when operating the Hettich Rotofix 32A centrifuge:
- Ensure the centrifuge is placed on a stable, level surface away from direct sunlight or heat sources.
- Do not operate the centrifuge with an open lid. The unit is designed to stop if the lid opens during operation.
- Always balance samples precisely. Imbalanced rotors can cause excessive vibration, damage to the unit, or personal injury.
- Use only rotors and accessories approved by Hettich for this model.
- Do not exceed the maximum speed or RCF specified for the rotor and tubes in use.
- In case of unusual noise or vibration, immediately press the STOP button and disconnect power.
- Wear appropriate personal protective equipment (PPE), such as safety glasses and lab coats, when handling samples.
- Disconnect the power cord before cleaning or performing any maintenance.
3. What's in the Box?
Upon unpacking, verify that all components are present:
- Hettich Rotofix 32A centrifuge unit
- Swing-out rotor (6-place)
- (6) Buckets
- (6) 15mL conical adapters
- Power cord
- Instructions manual (this document)
4. Setup
Follow these steps to set up your Hettich Rotofix 32A centrifuge:
- Unpacking: Carefully remove the centrifuge and all accessories from the packaging. Retain packaging for future transport or storage.
- Placement: Place the centrifuge on a sturdy, level, and vibration-free workbench. Ensure there is adequate clearance (at least 10 cm) around the unit for ventilation. Avoid areas with excessive dust, humidity, or direct sunlight.
- Rotor Installation:
- Open the centrifuge lid.
- Carefully place the swing-out rotor onto the motor shaft, ensuring it seats properly.
- Attach the six buckets to the rotor arms. Ensure they swing freely.
- Insert the 15mL conical adapters into the buckets if using 15mL tubes. For 85mL tubes, remove the adapters.
- Power Connection: Connect the provided power cord to the centrifuge's power inlet and then to a grounded 115VAC, 60Hz electrical outlet.
- Initial Check: Close the lid. The display should illuminate, indicating the unit is ready for operation.
Image 1: Hettich Rotofix 32A Centrifuge with its 6-place swing-out rotor and sample tubes. The main unit is teal and white, with a digital display and control buttons. The rotor, shown separately, holds six conical tubes.
5. Operating Instructions
Operating the Hettich Rotofix 32A is straightforward. Always ensure samples are balanced before starting a run.
- Load Samples: Open the centrifuge lid. Place sample tubes into the rotor buckets. Ensure that tubes of equal weight and volume are placed opposite each other to maintain balance. For example, if using 4 tubes, place them at positions 1, 3, 4, and 6 (or 1 and 4, 2 and 5, 3 and 6 for 2 tubes).
- Close Lid: Securely close the centrifuge lid. The unit will not operate if the lid is open.
- Set Parameters:
- Speed (RPM): Use the UP/DOWN arrow buttons next to the RPM display to set the desired rotational speed. The range is 500 to 4,000 rpm.
- Time: Use the UP/DOWN arrow buttons next to the Timer display to set the run duration. The timer is settable from 1 to 99 minutes in 1-minute increments.
- Start Run: Press the START button to begin the centrifugation process. The centrifuge will gradually accelerate to the set speed.
- Monitoring: The display will show the current speed and remaining time. The centrifuge automatically senses the rotor type and will shut off if an imbalance is detected during operation.
- End of Run: Once the set time elapses, the centrifuge will gradually decelerate and come to a complete stop. An audible signal may indicate the end of the run.
- Open Lid and Unload: Wait until the rotor has completely stopped before opening the lid. Carefully remove your samples.
- Power Off: For extended periods of non-use, it is recommended to disconnect the power cord.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your Hettich Rotofix 32A centrifuge.
- Cleaning:
- Disconnect the power cord before cleaning.
- The stainless-steel inner bowl can be cleaned with a damp cloth and mild detergent. Avoid abrasive cleaners.
- Wipe down the exterior surfaces with a soft, damp cloth. Do not allow liquids to enter the control panel or motor area.
- Clean the rotor and buckets regularly, especially after spills. They can be washed with mild soap and water, then thoroughly dried.
- Rotor Inspection: Periodically inspect the rotor and buckets for any signs of corrosion, cracks, or damage. Replace damaged components immediately.
- Lid Seal: Check the lid seal for any wear or damage. A proper seal is crucial for safe operation.
- Ventilation: Ensure that the ventilation openings on the centrifuge are not obstructed to prevent overheating.
7. Troubleshooting
Refer to this section for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Centrifuge does not start. | Lid not closed properly; No power; Faulty power cord. | Ensure lid is securely closed; Check power connection and outlet; Try a different power cord. |
| Excessive vibration or noise during operation. | Imbalanced samples; Rotor not seated correctly; Damaged rotor/buckets. | Stop the centrifuge, rebalance samples; Reinstall rotor; Inspect rotor/buckets for damage and replace if necessary. |
| Centrifuge stops unexpectedly. | Imbalance detected (safety feature); Lid opened during operation; Power interruption. | Check sample balance; Ensure lid remains closed during operation; Check power supply. |
| Display not working. | No power; Internal fault. | Check power connection; Contact customer support if power is confirmed. |
If the problem persists after attempting these solutions, please contact Hettich customer support.
8. Specifications
Detailed technical specifications for the Hettich Rotofix 32A Cell Culture Benchtop Centrifuge:
| Specification | Value |
|---|---|
| Model | 32ACellCulture6 (Rotofix 32A series) |
| Rotor Type | 6-place swing-out rotor with buckets and 15mL adapters (accommodates six 85mL tubes sold separately) |
| Speed Range | 500 to 4,000 rpm |
| Maximum Relative Centrifugal Force (RCF) | 2,701 x g |
| Timer | 1 to 99 minutes (in 1-minute increments) |
| Noise Level | Less than 57dB |
| Power | 115VAC, 60Hz |
| Weight | Approximately 51 lb. (23 kg) |
| Dimensions (H x W x D) | 257 x 366 x 430 mm |
| Housing Material | Metal |
| Inner Bowl Material | Stainless-steel |
| Refrigeration | Non-refrigerated |
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact Hettich directly. Refer to the official Hettich website or the documentation included with your purchase for specific warranty terms and contact details.
Hettich, founded in 1904, is a reputable manufacturer of centrifuges and incubators for clinical and life science applications, headquartered in Tuttlingen, Germany.
You can typically find support information on the manufacturer's official website: www.hettichlab.com