On reception of the motors check for any signs of damage during transport. Check also that the motor nameplate data complies with your order specification. In the unlikely event of a claim, please contact our sales office.
Should the motors need to be transported to another destination, care must be taken to prevent the motors from being exposed to armful effects. The motors should be stored in a clean, dry and vibration free place.
The assembling must be carried out by qualified personnel in accordance current legislation. Rotors are dynamically balanced with half key, so therefore the coupling to be fitted on the shaft should also balanced with half key.
The coupling should be heated to approximately 80ºC prior to fitting on the shaft. The shaft end is provided with axially tapped hole to aid the assembling of the coupling if required. NOTE: Never force the coupling with shocks, as this cause damage to the bearings. If the motor is to be directly coupled to the driven machine, care must be taken to correctly align the motor, in accordance with the coupling manufacturers instructions to prevent undue bearing wear. The bearing life will be at its optimum the more precise the alignment. For belt transmission, the pulley should not be too small on diameter or greater in with than the shaft extension of the motor. Belt tensioning should not exceed the maximum recommended radial loads for the bearings. These recommendations should be adhered to prevent bearing damage or shaft breakage.
The motor must be mounted in such a way that free circulation of fresh cooling air is guaranteed.
If the motor have been out of service or stored for a long period of time, it is recommended that the winding resistance is measured before installation. The insulation resistance should be measured using equipment rated for 500VDC for motor voltages up to 1000V. These measurements should be made before connecting the supply cables. The minimum insulation resistance values should be as follows: Temperature Voltage
Should the insulation resistance values be lower than the above, check if terminals are affected by humidity or dust and clean them as necessary. In the event of this not being the case the motors will need to be oven dried at a temperature less than 100ºC degree. Ensure that the motor nameplate voltage is the same as the mains supply. Check also that the connection is made according to the required voltage supply and/or speeds(connections diagrams are enclosed in the motor terminal box)
We recommend motor protection using overloads and short-circuit relays. Motors must be earthed, using either the earth screw in terminal box or fixed to the motor frame.
Every intervention on motor must be made with the motor disconnected of power supplied and by qualified personnel. Motors not equipped with lubrificating nipples are fitted with sealed for life bearings which allow 20.000 hours service under normal working conditions. Motors equipped with grease nipples are lubrificated with lithium grease and must be relubrificated according to the table.
Relubrification should be carried out with the motor running, with care being taken by the personnel carrying out the service. It is recommended that the lubrification periods be shortened if the motor is to operate under arduous conditions, high humidity or pollution, high bearing loading, excessive vibration, high ambient temperatures, etc. The bearings should be examined every two years and replaced if necessary. Again, if motor is operating under arduous conditions the examination should be made sooner. Care should also be taken to ensure that cooling air entries and surfaces are kept clean, the cleaning periods depend on the dirt of environment.
Whilst the bearings inspection maintenance is being carried out, it is suggested that a general cleaning of all active parts be effected, and along a drying out of winding if necessary.
To order spare parts it is necessary indicate motor type and serial number stamped on the nameplate.
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