MGM SM-SMX Series, Использование и обслуживание

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Page 4 of 32 A10H0321-NA
Installation
The installation of the motor must be carried out by qualified personnel,
using proper tools and working instruments.
When installing the motor, it is essential to check that all the
characteristics shown on the motor nameplate correspond to the
requested ones, a special care to the input voltage of the motor.
SM series and the derived ones (SMX, SMD, SMDA, -AV, -E, -PV, -MP)
don’t include motors suitable for hazardous environment. Misapplication
of a motor in a hazardous environment can cause fire or an explosion
and result in serious injury.
Before connecting the motor to the power supply it must be earthed
through the terminals located inside the terminal box and, if any, on the
motor frame.
In case of B14 flange mount be careful not to exceed with the fixing
screws the depth allowed in order to avoid damages on the winding of the
motor.
Check that all the gaskets are in perfect condition and well seated in their
places; check that the cable inlet openings are properly closed so that
the IP protection degree shown on the motor plate is respected.
For outdoor i nstallations, it’s recommended to protect the motor against
the sun irradiation and against bad weather conditions. We suggest that
the connecting cables come from the bottom upwards in order to avoid
drip and water stagnation. For outdoor vertical mounting with shaft down
it is necessary to use a rain canopy.
The eyebolts, if removed, must be replaced with screws with the same
length and pitch to guarantee the IP protection degree.
Before starting the motor or after long periods of inactivity or storage,
check that the resistance of insulation to earth is not less than 75MΩ
(value referred to an ambient temperature of 25°C). If the winding doesn’t
have such an insulation resistance it could mean that the winding is too
humid and, for this reason, it has to be dried in the oven.
Please contact MGM for further information.
The resistance reading must be taken with the proper instrument set at
500V. During and after the measurement the terminals might be under
high and dangerous voltage. Never touch the terminals for any reason
and read carefully the instrument user manual.
The motor must be installed in a ventilated room away from heat sources and in such
a position to allow free air intake for proper ventilation. The motor must be also
mounted in such a place as to allow easy inspection and servicing operations, keeping
in mind possible danger arising from touching moving parts or the motor frame which
may exceed 50°C.