Hach BioTector B3500s User Manual page 56

When the wiring of the system is completed, the power up of the system should be carried out in the order
below:
i) While the external disconnection switches are powered off, power on the internal Main
Power Switch in the BioTector.
ii) Close the BioTector electronics enclosure.
iii) If installed, close the air compressor enclosure.
iv) Switch on the external disconnection switches.
The power off of the BioTector should be carried out by switching off with the external disconnection switch
followed by the internal Main Power Switch. If installed, the power off of the air compressor should be carried
out by switching off with the external disconnection switch followed by compressor power switch.
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