-4- B1091-GB-3212 www.nord.com
2. Description
3. Information
2.1 Range of application
Use of the motors:
The motors may only be used for their intended purpose.
The motors are designed with at least IP 55 protection (for degree of protection see name
plate). They can be installed in a dusty or moist environment.
The necessary degree of protection and any additional precautions required always depend
on the operating and environmental conditions. For outdoor installation and vertical designs,
e.g. V1 or V5 with shaft pointing down, NORD recommends using the option of the double fan
hood [RDD].The motors must be protected against intense sunlight, e.g. by means of a
protective roof. The insulation is tropic-proof.
Installation height:
1000 m
Ambient temperature: -20°C...+40°C. With standard motors, a greater ambient temperature
range is permitted from -20°C...+60°C. The rated power must however be reduced to 82% of
the catalogue value. If the maximum value of the ambient temperature is between +40°C and
+60°C, the value of the power consumption can be inversely interpolated linearly between
100% and 82%.
The motor connection cables and the cable inlet glands must be suitable for temperatures
90°C.
3. Information on the designated use of electric motors
Work may only be performed if the system is disconnected from the mains supply.
3.1 Transport, storage
For transport use all the hoisting lugs fitted to the motor!
The hoisting lugs are designed for the weight of the motor; do not attach any
additional loads!
To transport machine sets (e.g. gear unit attachments) only use the hoisting lugs and
pins provided!
Machine sets must not be hoisted by attaching to individual machines!
To prevent damage to the motor, the motor must always be lifted with suitable hoisting
equipment. The antifriction bearings should be replaced if the time between delivery and
motor commissioning under favourable conditions (storage in dry, dust-free and vibration-free
rooms) is more than 4 years. Under unfavourable conditions that time is reduced
considerably. It may be necessary to treat unprotected, machine surfaces (flanging surface,
shaft end; ...) with corrosion inhibitor. If necessary, check the insulation resistance of the
winding, see section 3.6.
Changes in normal operation (higher power consumption, higher temperatures or higher
vibrations, unusual noises or smells, response from the monitoring system, etc.) indicate that
operation is impaired. To avoid personal injury and damage to property, the maintenance staff
responsible must be informed about the change immediately.
In case of doubt switch off the motor without delay, as soon as the status of the system
permits.
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