Siemens SIMOTICS GP Operating Instructions Manual page 82

Use eyebolts in placed laterally to the terminal base for
removal and change of position F1 to F2.
CAUTION:
Do not insert screwdrivers or wedges between the
base and the cover of the explosion proof conduit box. Doing so could affect
the tight fit between the base and the cover which may compromise the
explosion proof properties of the motor.
To remove the cover of the explosion proof conduit box, first
loosen the screws, but do not remove them completely in order to
prevent the cover from sliding or falling. Then use a couple levers in
the notches provided, as shown in the illustration. Failure to follow
these instructions might result in serious injuries and/or damage to
the motor and its surroundings.
Unrestricted 82 A5E43486667A_AB