5 | Installation
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In case of a machine delivery without motor:
• Make sure that the ATEX marking of the coupling corresponds to the ATEX classi-
fication of the machine.
• Fit the second coupling hub on the motor shaft (separately delivered).
• Axially adjust the hub in such a way until value "E" is reached.
• When the coupling adjustment is done, lock the coupling hub by tightening the
radial screw.
• Mount the motor on the machine by including the coupling spider.
For further coupling information, go to
manual of the ROTEX
®
coupling.
5.8 Electrical Connection
DANGER
Live wires.
Risk of electrical shock.
• Electrical installation work must only be executed by qualified personnel.
• Make sure that the power supply for the motor is compatible with the data on the
nameplate of the motor.
• The electrical installation must comply with applicable national and international
standards.
• Provide a lockable disconnect switch on the power line so that the machine is com-
pletely secured during maintenance tasks.
• Provide an overload protection according to EN 60204-1 for the motor.
• Make sure that the motor of the machine will not be affected by electric or electro-
magnetic disturbance from the mains; if necessary seek advice from Busch.
• Connect the protective earth conductor.
• Electrically connect the motor.
NOTICE
The admissible motor nominal speed exceeds the recommendation.
Risk of damage to the machine!
• Check the admissible
motor nominal speed (n
max
) on the nameplate of the machine
(NP).
• Make sure to comply with it.
NOTICE
The motor frequency is below 20 Hz. (even 25 Hz with gas lubricated double mechanical
seals)
Risk of damage to the machine!
• The motor nominal speed must always be higher than 1200 min
-1
(20 Hz).
• The motor nominal speed must always be higher than 1500 min
-1
(25 Hz), if the ma-
chine is equipped with gas lubricated double mechanical seals.
Summary of Contents for COBRA ATEX NC 0100-0300 B
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