KROHNE DK 32-DK 34 ATEX II3G Ex nA-ic EN - Manual (Page 12)

5
OPERATION
12
DK32 DK34
www.krohne.com 03/2013 - 4002148602 AD DK32/34 II3G R03 en
Operation
5.1 Start-up
Start-up is only permitted when the variable area flowmeter:
• is correctly installed in the system and connected.
• has been checked for the proper state with regard to its installation and connection
requirements.
The user of the system must have it checked before start-up in compliance with the national
regulations for checks before startup.
5.2 Operation
Variable area flowmeters must be operated in such a way that they remain within the maximum
and minimum permissible temperatures and pressures and the electrical limit values.
Variable area flowmeters may only be operated if the equipment parts necessary for safety are
effective in the long run, and are not rendered inoperable during operation.
5.2.1 Operation as intrinsically safe equipment "ic"
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 Operation as non-sparking equipment "nA"
DANGER!
During operation it is only permitted to open the indicator if no explosive atmosphere is present.
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