KROHNE BW 25 Ex II 1-2 G EN - Manual (Page 17)

OPERATION
5
17
BW25
www.krohne.com 03/2010 - 4000862901 MA BW25-Ex-II1/2G-AD R01 en
Operation
5.1 Start-up
Make the following checks before starting up the device:
• Suitability of the materials used for the measuring unit and for the gaskets for adequate
resistance to corrosion from the process product.
• Correct connection of the built-in electrical components.
• Check that the liquid level indicator is properly mounted on the container, including any
auxiliary equipment such as the reference vessel and/or the auxiliary connections
• Check that the equipotential bonding system is connected properly (BW25/.././M10 only)
• Check that the electrostatic ground is connected properly (BW25/.././M9/../…/.. only)
• Check the correct connection of the power supply and I/O functions.
• Check that the covers of the electronic compartment are firmly in place and special locks
have been tightened down (BW25/.././M10 only).
5.2 Operation
5.2.1 Version BW25/.././M9./../.../
Adjusting the limit switch during operation is permitted. To do so, remove the housing cover.
Replace the housing cover immediately after adjusting the limit switch.
5.2.2 Version BW25/.././M10
Do not open the cover of the electronics compartment in the presence of an explosive
atmosphere.
If the device needs to be configured due to the existence of an explosive atmosphere, this can be
done using the supplied programming magnets. There is no need to open the housing as it can
be done through the glass window of the electronics compartment or digitally via the signal
output.
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