MGM BAH 132 Series, Руководство по эксплуатации и обслуживанию

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Page 25 of 63
Doc. Ref.: A79H0319
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 installations, 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. 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.
The motor is balanced with a fitted half key (60034-14).
During the mounting stage check that motor and machine coupling is accurately aligned, as an imperfect alignment could cause
vibrations, damage the bearings, or cause shaft end breakage. In particular, when IMB5 and IMB14 mounting are used, check that
coupling surfaces are thoroughly cleaned. For IMB3 motors, when using couplings with joints, check that the motor axis and the
driven machine axis are perfectly in line. When using pulleys, check that the belt tension is not too high.
To adjust the belts tension follow carefully the instructions of the supplier of the driven machine. An excessive tension
could cause damages to the bearings and the shaft breakage
The surface where the motor is anchored must insure stability of fixing, motor alignment to the connected machine, lack of
vibrations transmitted to the motor itself. So please verify that no vibrations are transmitted to the motor. Please also verify that
the surface where the motors is anchored is flat. The non-compliance of this condition can cause the breakage of the motor feet.