Version 09/2015, Rev. 1.3 of 02/03/2017
Translation of the original operating manual, WZG6001-e150401
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3.7 Safety devices
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3.7.1 Lid lock device
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").
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3.7.2 Standstill monitoring system
Opening of the centrifuge lid is only possible if the rotor is at a standstill. This
standstill is checked by the microprocessor.
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3.7.3 System check
An internal system check monitors the data transfer and sensor signals with regard
to plausibility. The system continuously performs a self-check and identifies
malfunctions. Error messages are displayed as "Error" followed by a code number
(see chapter 7.2 - "Table of error codes").
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3.7.4 Earth conductor check
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").
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3.7.5 Imbalance monitoring system
The indication "Imbalance" in the rotor field and, in some cases, also a sound signal
indicate that the centrifuge is in the impermissible imbalance range.The drive will
be switched off in the acceleration phase or during the run.
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3.7.6 Rotor monitoring system
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.
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