Degree Of Protection; Type Of Construction; Transport, Storage And Packing; Installation And Fitting - VEM W41 Series Installation, Operating And Maintenance Instructions

Installation, Operating and Maintenance Instructions (Translation)
3. Efficiency
The efficiency is determined according to the specifications of EN 60034-2-1. For motors < 1kW the direct meas-
urement method is used. The measurement uncertainty of this method is rated „low". For motors ≥ 1kW the individ-
ual loss method is used. The additional losses of this method are determined from the residual losses. The meas-
urement uncertainty of this method is also rated as "low". Efficiency and Efficiency class complying with EN 60034-
30 are listed on the name plate of energy saving motors.

4. Degree of Protection

The degree of protection of the motors is indicated on their rating plate. The degree of protection of additional de-
vices fitted to the motor can be different than the degree of protection of the motor. This needs to be taken into
consideration during the installation of the motors. If motors are installed in the open, they should be protected
against direct effects of the climate (freezing of the fan due to direct fall of rain, snow and formation of ice).

5. Type of Construction

The type of construction of the motors is indicated on the rating plate. The motors can be used in different types of
construction only with permission of the manufacturer and if necessary after modification carried out in accordance
with the manufacturer's instructions. Especially with types of construction with vertical shaft the user has to ensure
that foreign particles cannot fall into the fan cowl.

6. Transport, Storage and Packing

If possible the motors should only be stored in closed and dry rooms. Outdoor storage under cover is permitted for
a short time only and requires adequate protection against all harmful effects of the climate. The motors also have
to be protected against mechanical damage. Never transport or store the motors resting on their fan cowls. The eye
bolts/attachment eyes of the motors together with appropriate lifting tackle must be used for transport. The eye
bolts/attachment eyes are intended for the lifting of the motors only. No other additional load must be lifted together
with the motor. If eye bolts/attachment eyes are removed after installation, the tapped holes must be blanked off
permanently according to the Protection Standard. For longer periods of storage a low vibration environment shall
be provided so that bearing damages due to downtime can be avoided. After a storage period of more than 12
months the condition of the grease must be checked before putting the motor into operation.
When handling parts of the motor ropes for lifting must not be slung around bearings on the
shaft. If transport is not possible in another way the bearings must be protected accordingly.

7. Installation and Fitting

7.1 General remarks

Since during normal operation of electric motors, temperatures in excess of 100 °C can occur on their
surface, any contact with them must be prevented if the motors are installed in accessible areas. Because
of this temperature sensitive parts must never be fitted to them or have contact with them.
The permissible coolant temperature (room temperature at place of installation) according to IEC/EN 60034-1 is
max. 40°C/min. –20°C without labelling and the permissible altitude of site is up to 1000 m above sea level (other
than the given values have to be specified on the name plate of the motor and must be certified separately if nec-
essary).
Please make sure that the cooling air can enter and leave the air in/outlet without hindrance and without getting
sucked in again. Inlet and outlet openings have to be protected against pollution and dirt particles. The direct intake
of discharged air from neighbouring aggregates must be prevented by suitable measures. The minimum distance of
air inlet of the fan cover against any obstacles (dimension BI) has to be observed under all circumstances.
Figure 3: Minimum distance for air inlet
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VEM motors GmbH-2013
Size
315
355
400
450
8
English
Bl [mm]
55
60
100
100