JUMO flowTRANS MAG H01, Operating Manual

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4 Mounting
46
4.4 Notes on opening and closing the housing
To install, start up and maintain the JUMO flowTRANS MAG devices, it is necessary to open the housing
of the sensor or transmitter.
Be sure to observe the following safety instructions before opening and after closing the housing for re-
starting:
DANGER – Explosion hazard!
When the case lid is open, the Ex-protection becomes void.
Before opening the housing, de-energize all of the device's connecting cables and wait for at least 20
minutes.
DANGER – Explosion hazard!
Loosening the transmitter housing screws invalidates the Ex-protection. Before re-starting, tighten all
screws on the transmitter housing.
WARNING – Personal injuries!
When the housing is open, the EMC protection is limited and the protection against contact becomes
void.
Before opening the housing switch off the voltage supply.
WARNING – Impairment of the housing protection type!
If the seal (O-ring) is not connected properly or damaged, the housing protection type is impaired. Before
closing the case lid, check the seal (O-ring) for damage and replace if necessary.
When closing the case lid, make sure the seal is connected properly.