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Entering or Changing Programs

Category: Operation & Use
Topic: Centrifuge Operation

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.

Hettich Centrifuge Statement on Leakage Current

Category: Other
Topic: General

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

Imbalance errors

Category: Operation & Use
Topic: Centrifuge Operation

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

Installing and Removing a Rotor

Category: Care & Maintenance
Topic: Preventative Maintenance

Centrifuge rotors are designed to sit evenly and to fit tightly onto the motor shaft. When installing a rotor, be sure that particles of dirt do not adhere to the motor shaft and cause an uneven seating of the rotor. Be sure to grease the motor shaft on a regular basis to allow for easier removal in the future and to prevent the metal of the shaft from binding with the metal of the rotor.

Installing Centrifuge on a stable base

Category: Operation & Use
Topic: Centrifuge Installation & Set-up

Some units can weigh as much as 350 lbs when fully loaded with the rotor, buckets, adapters and media. Over time this can cause an unsecured table or unsteady work surface to become weak and in turn become a safety hazard in your lab. To avoid any issues, please make sure your unit is installed on a bench or work surface that can support the weight of your centrifuge and any other equipment you have on the same surface. Typically most lab benches in hospitals and research facilities can support the product just fine.

Life Cycle Counts

Category: Care & Maintenance, Quality & Safety, Operation & Use
Topic: Preventive Maintenance, Centrifugation Safety

Predictive Maintenance: Life Cycle Counts/Maximum Cycles

Like most mechanical devices, such as a car or truck, centrifuges follow a maintenace program and part replacement schedule base on maximum cycle counts. Although this can take many years, eventually the materials used in your rotor, buckets, and centrifuges will reach the end of their useful life. By performing mechanical stress tests, we have determined the maximum amount of cycles our products should undergo before being retired.

Loading the Rotor

Category: Operation & Use
Topic: Centrifuge Installation & Set-up

For centrifugation safety and maximum results, the rotors and buckets may only be loaded symmetrically with all containers distributed evenly on all rotor positions. For authorized combinations, see the section "Rotors and Accessories" and "Loading the Rotor" in the Product Manual supplied with the centrifuge. Or, click here to download the Product Manual for your centrifuge.

Lubrication of Rotor trunnions

Category: Care & Maintenance
Topic: Preventative Maintenance

The rotor trunnions are small steel knobs located at the edge of a swing-out rotor and support the centrifuge buckets. During centrifugation, the buckets will swing on the trunnions causing friction. For best results, general maintenance and greasing of the trunnions will decrease the friction and allow for an even swing of the buckets.

Mains Interrupt

Category: Operation & Use
Topic: Error Codes & Remedies

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

Maintenance: Parameters of Cleaning

Category: Care & Maintenance
Topic: Preventative Maintenance

Proper maintenance will ensure your Hettich centrifuge performs for several years, even with continuous use. With safety always in mind, be sure to unplug the centrifuge before cleaning.

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