3 ATEX Explosion hazard areas
B 1091 en-3118 31
Pos: 81 /A nl eitu nge n/M otor en/ B10 91 D re hstro mm otor en/ 3. AT EX /Kl em men kast end eck eldic ht ung [EXE , EXN, Zon e21+ 22] @ 7\mod_1431427943472_388.docx @ 218892 @ 3 @ 1
3.2.3 Terminal box cover seals
The terminal box cover gasket is captively mounted on the terminal box cover. Please only use an
original seal when replacing the seal.
If the terminal box is opened during installation, maintenance, repair, troubleshooting or overhaul, the
terminal box cover must be re-fitted after the work is complete. There must be no dirt on the surface of
the seal or the sealing surface of the terminal box frame.
The screws for the terminal box cover must be tightened with a torque according to the list below.
Tightening torques for terminal box cover screws
Thread diameter M4 M5 M6 M8
Tightening torque (Nm) 0.8 - 1.2 1.2 - 1.8 1.5 - 2.5 3.0 – 5.0
Pos: 82 /A nl eitu nge n/M otor en/ B10 91 D re hstro mm otor en/ 3. AT EX /Mo torl ag e – Bes o nderh eit en [ EXE, EXN , Zone 21+22 ] @ 7\mod_1431428078044_388.docx @ 218924 @ 3 @ 1
3.2.4 Motor position – special features for IM V3, IM V6
If the end of the shaft faces upwards, e.g. version IMV3, IMV6, a cover must be provided by the operator
/ installer, which prevents foreign bodies from falling into the fan cover of the motor (see
DIN EN 60079-0). This must not obstruct the fan from cooling the motor. If the end of the shaft faces
downwards (AS), e.g. versions IMV1, IMV5, the motors are normally provided with a protective cover
on the fan cover. A hand wheel on the second end of the shaft is not permitted.
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