NORD Drivesystems B1091 - Manual (Page 4)

-4- B1091-GB-4613 www.nord.com
2. Description
3. Information
2.1 Field 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 may be installed in dusty or damp environments.
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 the shaft pointing downward, NORD recommends the use of the double fan
hood option [RDD].
The motors must be protected against intense sunlight, e.g. by means of a protective shield.
The insulation is tropicalised.
Installation altitude:

1,000 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 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 correct handling of electric motors
All work must only be carried out with the power to the system switched off.
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!
 Only use the hoisting lugs and pins provided when transporting machine sets (e.g.
gear unit attachments) !
 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. Under favourable conditions the roller bearings should be replaced if the time
between delivery and motor commissioning (storage in dry, dust-free and vibration-free
rooms) is more than 4 years. Under unfavourable conditions this time is reduced considerably.
It may be necessary to treat unprotected, machine surfaces (flanging surface, shaft end, etc.)
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.