MGM BA Serie Empleo Y Mantenimiento página 7

Please verify that the type of brake is suitable for the application and in compliance with standards
or rules in force on the machine on which the motor is incorporated.
Make sure that the brake torque is suitable for the application (e.g. lifting, safety applications,
cranes and so on). For further details pls contact MGM motori elettrici SpA.
BA series doesn't include motors suitable for hazardous environment. Misapplication of a motor in hazardous
environment can cause fire or an explosion and result in serious injuries.
Make sure that the brake torque is suitable for the application.
Check that all the gaskets are in perfect conditiion and well seated in their places; check that the cable inlet openings are
properly closed and the IP protection level shown on the plate is respected.
For outdoor installations, it's recommended to protect the motor against the sun irradiation and against bad weather
conditions. For outdoor vertical mounting with shaft down it is necessary to use a rain proof cover. Pls check that the
cables entry isn't on the top of the terminal box. We suggest in any case that the connection cables come from the
bottom upwards in order to avoid drip and water stagnation.
The ringbolts 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 earth insulation resistance is not
less than 75M (25° C). The measuring must be done with a 500V DC Megger instrument.
Never touch the terminals during and immediately after measurement since they may carry dangerous
voltages.
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 half key fitted (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 construction motors are used, check that coupling surfaces are
thoroughly cleaned and that the centering is perfect during the mounting stage. 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. 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 pls verify that no vibrations are transmitted
to the motor.
Maintenance operations must be carried out only by qualified personnel and only
after having disconnected the plant or the motors from the electrical supply.
Inadequate inspections and maintenance can produce personal injury or
property damage.
Maintenance and inspection operations described here below are absolutely
essential in any case and they become even more important in relation to heavy
duty applications or situations in which the brake motor performs as key safety
role (e.g. Lifting, safety applications, cranes and so on).
Maintenance
Maintenance operations must be carried out by qualified personnel and only after having disconnected the
plant or the motor from the electrical supply (including any possible auxiliaries and especially anti-
condensation heaters) and after having checked that no load is applied to the driveshaft. For security reasons
the hand release (49) and the hexagonal "T" key (51) never must be fitted on the motor but removed and kept by
the plant maintenance responsible after every intervention. The hexagonal "T" key must be used only after
having disconnected the motor from the electrical supply and after having checked that no load is applied to
the drive shaft. After any operation on brake assembly, verify that the end protection cover (26) is firmly held in
place by the hexagonal rear nut (27).