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Category: Care & Maintenance

Topic: Decontamination

Article Title: Autoclaving

Most accessories used in Hettich centrifuges can withstand autoclaving. Please note that clear plastic items such as hygienic lids may discolor after repeated autoclaving.

Category: Care & Maintenance

Topic: Preventative Maintenance

Article Title: Preventative Maintenance Schedule

Most facilities have a pre-determined schedule of maintenance for the different categories of equipment. Hettich recommends cleanings and inspections of it’s centrifuges be conducted at “regular intervals”. In some facilities it is every three months. In others it can be yearly.

Category: Quality & Safety

Topic: Centrifugation Safety

Article Title: Emergency Release

During a power failure, the motorized lid cannot be unlocked. For access to items locked inside a centrifuge, an emergency release of the lid has to be executed by hand.

Category: Care & Maintenance

Topic: Decontamination

Article Title: Radioactive Decontamination

According to the Operator’s manual, the cleaning agent used must be specifically labeled as being an agent for the removal of radioactive contaminants.

Category: Care & Maintenance

Topic: Decontamination

Article Title: Pathogenic Decontamination

For decontamination, Hettich Instruments recommends using surface decontaminants such as “BDD” or “Bacdown” from Decon Laboratories (www.deconlabs.com). Please refer to the manufacturer’s instructions regarding the safe use of any product used for cleaning and decontamination.

Category: Care & Maintenance

Topic: Decontamination

Article Title: Decontamination Certificate

For the safety of transportation personnel as well as our own receiving department, a certificate of decontamination MUST accompany all products returned to Hettich Instruments.

Category: Care & Maintenance

Topic: Decontamination

Article Title: Disinfection of rotors and accessories

If infectious material should get on Hettich rotors or accessories, they must be appropriately disinfected. According to the operator’s manual, these are the most desirable ingredients of suitable disinfectants:

Category: Other

Topic: General

Article Title: Hettich Centrifuge Statement on Leakage Current

Hettich Centrifuges use brushless DC motors controlled by a device known as a Frequency Converter.

Category: Quality & Safety

Topic: Centrifugation Safety  

Article Title: Approved Rotors and Accessories

Hettich manufactures a variety of rotors, buckets and accessories for use in their centrifuges.

Category: Symbols & Markings

Topic: Symbols

Article Title: Disposal of Centrifuge

Before disposal, the centrifuge must be decontaminated and free of any bio- or radioactive hazard to protect people, the environment and property.

Category: Quality & Safety

Topic: Centrifugation Safety

Article Title: Repairs

We are here to help in the rare instance that your Hettich centrifuge is in need of a repair.

Category: Operation & Use

Topic: Centrifuge Operation

Article Title: Changing Centrifugation Parameters During a Run

The running time, the speed, the relative centrifugal force (RCF), the centrifuging radius, the run-up and run-down parameters as well as the temperature (for centrifuges with cooling only) can all be changed while the centrifuge is running.

Category: Care & Maintenance

Topic: Preventative Maintenance

Article Title: Clean, Inspect & Lubricate

It is important to regularly clean, inspect and lubricate your rotor and accessories in all Hettich Centrifuges. This will ensure proper operation and longer life span of all components, plus reduce the noise, vibrations and prevent imbalance errors from occurring.

Category: Operation & Use

Topic: Centrifuge Operation

Article Title: Continuous Operation

Set the hours, minutes, and seconds “0” or “—“. Press the START key.

Category: Quality & Safety

Topic: Centrifugation Safety

Article Title: Corrosive Agents

Hettich manufactures its products using high quality materials that are engineered to last for many years.

Category: Operation & Use

Topic: Centrifuge Operation

Article Title: Definition of Mains Reset

A mains reset is the removal and re-application of AC power via the power switch.

Category: Operation & Use

Topic: Centrifuge Operation

Article Title: Emergency Stop

The centrifuge will invoke the highest braking intensity (9) by pressing the STOP key twice.

Category: Operation & Use

 Topic: Centrifuge Operation

Article Title: Entering or Changing Programs

User created programs can be stored for use in most centrifuges. The programs are stored values of each of the centrifuge parameters that can be recalled quickly without having to reprogram each individual parameter.

Category: Quality & Safety

Topic: Centrifugation Safety

Article Title: Use of glass tubes and containers in a centrifuge

Even though Hettich centrifuges are designed to spin a variety of centrifuge tubes and accessories, please pay particular attention when using glass tubes and containers.

Category: Operation & Use
Topic: Centrifuge Operation
Article Title: Imbalance errors

Imbalance errors are caused by unbalanced loads or imbalance switch signals triggering the error.

Category: Care & Maintenance
Topic: Preventative Maintenance
Article Title: Installing and Removing a Rotor

Centrifuge rotors are designed to sit evenly and to fit tightly onto the motor shaft.

Category: Operation & Use
Topic: Centrifuge Installation & Set-up
Article Title: Installing Centrifuge on a stable base

Centrifuges come in a variety of shapes, sizes and weights.

Category: Quality & Safety
Topic: Centrifugation Safety
Article Title: Limited Service Life (Cycle Counts)

For the safety of its customers, Hettich has developed a time table for the safe use and reliability of its critical components.

Category: Operation & Use
Topic: Centrifuge Installation & Set-up
Article Title: Loading the Rotor

Check the rotor for firm seating (see Installing the Rotor). With swing-out rotors, all rotor positions must have identical buckets. Certain buckets are marked with the number of the rotor position. These buckets may only be used in the respective rotor position. Buckets that are marked with a set number (e.g. S001/4) may only be used in the set.

Category: Care & Maintenance 
Topic: Preventative Maintenance
Article Title: Lubrication of Rotor trunnions

The rotor trunnions are small steel knobs located at the end of a swing-out rotor. The centrifuge buckets hang from these trunnions during centrifugation. As the buckets swing on these trunnions, friction can build quickly due to the centrifugal forces.

Category: Operation & Use
Topic: Error Codes & Remedies
Article Title: Mains Interrupt

AC power failure occurred during the centrifugation run. (The centrifugation run was not finished.)

Category: Care & Maintenance
Topic: Preventative Maintenance
Article Title: Maintenance and Servicing (parameters of cleaning)

With safety ALWAYS in mind, be sure to unplug the centrifuge before cleaning!

Before any other cleaning or decontamination process other than that recommended by the manufacturer is performed, the user should check with the manufacturer to make sure that the planned process does not damage the device.

Category: Quality & Safety
Topic: Centrifugation Safety
Article Title: Bio Safety

Hettich manufacturers a variety of buckets and lids designed for bio-containment. These lids and buckets have a special screw cap design with bio-safety seal that contains any accidental tube breakage and traps it within the bucket.

Category: Operation & Use
Topic: Centrifuge Installation & Set-up
Article Title: Product Registration

Your safety is most important to us. Product registration is an important way we can help you stay informed with all the latest information regarding your centrifuge. It is fast; takes less than 2 minutes!

Category: Other
Topic: General
Article Title: Product Support Time Length

The product support period is normally 10 years from the last date of production. Hettich typically tries to maintain a stock of support parts that will last through the product support period.

Category: Quality & Safety
Topic: Centrifuge Safety
Article Title: Proper space around the centrifuge

Position the centrifuge in a stable and level manner in a suitable place (see Installing centrifuge on a strong, stable base).

Category: Care & Maintenance
Topic: Decontamination
Article Title: Radioactive Decontamination

According to the Operator’s manual, the cleaning agent used must be specifically labeled as being an agent for the removal of radioactive contaminants.

Category: Operation & Use
Topic: Centrifuge Operation
Article Title: Recalling a Program

Rotina 380, Rotina 420, Rotanta 460 & Rotanta 460 Robotic:

Press the PROG key. The parameter RCL is displayed.

Category: Care & Maintenance
Topic: Decontamination
Article Title: Recommended Decontamination Products Radioactive:

“No Count” or “Contrad 70” from Decon Laboratories (www.deconlabs.com)

Category: Operation & Use
Topic: Centrifuge Installation & Set-up
Article Title: Removal of Packaging

Remove all strapping from the carton.

Category: Quality & Safety
Topic: Centrifugation Safety
Article Title: Rotor Recognition

At the start of every centrifugation run, the rotor is identified by the centrifuge through a series of magnets in the bottom of the rotor.

Set in a particular pattern, these magnets create the rotor code for that style rotor.

Category: Care & Maintenance
Topic: Preventative Maintenance
Article Title: Surface Cleaning and Care

The outer surfaces of Hettich centrifuges are constructed of various painted metal surfaces and molded plastics.

For the most part, these surfaces stand up to most regular cleaning products such as “409”, “Fantastic”, “Simple Green”, “Windex”, etc.

Category: Symbols & Markings
 Topic: Symbols
Article Title: Symbols used on Centrifuge and in Ops Manual

Category: Operation & Use
Topic: Centrifuge Operation
Article Title: Tacho Errors 1, 2, 96; -1- (EBA 20, EBA 20S, EBA 270, ROTOFIX 32_A only)

Tacho (tachometer) errors are errors in the system that recognizes motion of the rotor.

To clear Tacho Errors 1, 2, & 96:

Open lid, turn power off. Make sure rotor is properly attached to the motor.