22
FEM630 | ELECTROMAGNETIC FLOWMETER  |  OI/FEM630-EN REV. A
5     ...Installation
Integral mount design
Remote mount design
Transmitter, terminal space, signal cable
A
B
C
Figure 21  Cover lock (example)
Danger of explosion if the device is operated with the 
transmitter housing or terminal box open!
While using the device in potentially explosive 
atmospheres before opening the transmitter housing or 
the terminal box, note the following points:
•  A valid fire permit must be present.
•  Make sure that no flammable or hazardous 
atmospheres are present.
Risk of injury due to live parts!
When the housing is open, contact protection is not 
provided and EMC protection is limited.
•  Before opening the housing, switch off the power 
supply.
WARNING
DANGER
Potential adverse effect on the IP rating
•  Check the O-ring gasket for damage and replace it if 
necessary before closing the housing cover.
•  Check that the O-ring gasket is properly seated when 
closing the housing cover.
NOTICE
Open the housing:
Release the cover lock by screwing in the Allen screw 2.
1  Unscrew cover 1.
Close the housing:
1  Screw on the cover 1.
2  After closing the housing, lock the cover by unscrewing 
the Allen screw 2.
Opening and closing the housing