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3 Safety
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3.7
Safety devices
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3.7.1
Lid lock device
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3.7.2
Standstill monitoring system
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3.7.3
System check
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3.7.4
Earth conductor check
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3.7.5
Imbalance monitoring system
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3.7.6
Temperature monitoring system
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3.7.7
Rotor monitoring system
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22
The centrifuge can only be started when the lid is properly closed. The electrical
lock must be locked. The lid can only be opened when the rotor has stopped. If the
lid is opened by way of the emergency release system during operation, the
centrifuge will immediately switch off and decelerate brakeless. If the lid is open,
the drive is completely separated from the mains power supply, i.e. the centrifuge
cannot be started (see chapter 7.1.1 - "Emergency lid release").
Opening of the centrifuge lid is only possible if the rotor is at a standstill. This
standstill is checked by the microprocessor.
An internal system check monitors the data transfer and sensor signals with regard
to plausibility. Errors are detected with extreme sensitivity and displayed as error
messages in a dialog box (see chapter 7.2 - "Table of error codes").
For the earth conductor check, there is an equipotential bonding screw on the rear
panel of the centrifuge (see chapter 2.1.1 - "Functional and operating elements").
An earth conductor check can be carried out by authorized and specialized
personnel using a suitable measuring instrument. Please contact the service
department (see chapter 7.3 - "Service contact").
A dialog box may pop up or emit a sound signal in order to indicate that the
centrifuge is in the inadmissible imbalance range. If the rotor is loaded unevenly,
the drive will be switched off in the acceleration phase or during the run.
If the temperature inside the rotor chamber rises above 50°C, the drive system will
be switched off automatically. The centrifuge cannot be restarted until it has
cooled.
When a rotor number number is selected, the computer will automatically check
whether the entered speed or the entered gravitational field are permissible for the
selected rotor.
Version 09/2015, Rev. 1.3 of 02/03/2017
Translation of the original operating manual, WZG6003-e150401
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