KROHNE OPTISWIRL 4070 Quickstart EN - Manual (Page 23)

ELECTRICAL CONNECTIONS
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OPTISWIRL 4070
www.krohne.com 06/2010 - 4000122102 - QS OPTISWIRL R04 en
3.5 Protection category
The measuring device meets all requirements of protection category IP66/67.
Therefore it is essential to observe the following points:
• Use only original gaskets. They must be clean and free of any damage. Defective gaskets must
be replaced.
• The electrical cables used must be undamaged and must comply with regulations.
• The cables must be laid with a loop 1 upstream of the measuring device to prevent water
from getting into the housing.
• The cable feedthroughs 2 must be tightened.
• Align the measuring device so that the cable feedthrough is never facing up 3.
• Close the unused cable feedthroughs using blind plugs 4.
• Do not remove the required cable bushing from the cable feedthrough.
CAUTION!
After all servicing and maintenance work on the device, the specified protection category has to
be ensured again.
Figure 3-4: Cable feedthrough
QS_OPTISWIRL4070_R04_en_122102_PRT.book Page 23 Monday, June 7, 2010 8:51 AM