KROHNE OPTISWIRL 4070 EN - Manual (Page 40)

4
ELECTRICAL CONNECTIONS
40
OPTISWIRL 4070
www.krohne.com 02/2013 - 4000150606 MA OPTISWIRL4070C R07 en
4.6 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 4-5: Cable feedthrough
MA_OPTISWIRL4070C_R07_en_150606_PRT.book Page 40 Wednesday, February 13, 2013 2:47 PM