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Danger when a rotor falls
Eyebolts in accordance with DIN 580 are unsuitable for suspending the rotor. The rotor can fall
off. This can result in death, serious injury or material damage.
● Use lifting gear which is suitable for the rotor weight and direction of loading.
Machine damage caused by improper repair work
Improper servicing work can damage the machine. This can cause damages and/or faults
which can result in eventual or immediate death, serious injury, or property damage.
● Properly assemble or disassemble the machine.
● Use only suitable tools and equipment.
● Immediately replace damaged components.
● If necessary, contact the Service Center (Page 163).
Danger as a result of rotor falling out
If the motor is in a vertical position, the rotor can fall out while work is being performed on the
locating bearing. This can result in death, serious injury or damage.
● Support or unload the rotor when carrying out work with the machine in a vertical position.
9.2.2
Screws with preCOTE coating
The motor can partly be fitted with screws with preCOTE coating. To ensure screw locking, use
new screws with preCOTE coating during assembly/repair. As an alternative, use normal
screws with a threadlocker such as Loctite.
9.2.3
External fan
9.2.3.1
External fan unit
The external fan unit is mounted on the NDE radially (at the top or side) or axially. In case of
replacement, remove the complete external fan unit.
SIMOTICS FD 1LQ1
Operating Instructions 01/2019
Maintenance
9.2 Corrective Maintenance
129
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