Service Instructions; General Technical Description; Electrical And Electronical Components; Power Board - Hermle Z 326 Service Instruction

Universal centrifuge

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Model Z 326 is a micro processor controlled laboratory centrifuge.

The actuation is a three phase asynchronous motor which is controlled by frequency converter.

Model Z 326 has an independent error detection program, displaying possible errors and therefore

supporting the trouble shooting process.

The unit is equipped with several safety features:

• Imbalance detection

• Motor over temperature protection

• Lid lock does not open until the standstill of the centrifuge

• Rotor over speed protection

Please follow below mentioned safety instructions for any kind of service actions:

• The capacitor of the frequency converter can be under voltage even when the unit is switched off.

• Do not leave units unsupervised, when parts of the housing have been removed and the unit is still

connected to the main power supply.

• Do not bypass the lid's safety contacts and never work with the unit's lid open.

• The VDE regulations are valid for all electrical work that has to be done.

The power board is serving the low voltage supply of the centrifuge control system.

The power board is electrically isolated and has a dielectric strength of DC 2.2 kV.

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SERVICE INSTRUCTION Z 326

7 SERVICE INSTRUCTIONS

Version 01/2010

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