Universal Motors BF31 Manual De Instrucciones página 5

INSTRUCTIONS MANUAL
ASYNCHRONOUS MOTORS SÉRIES:
BF31;BF31C;BF31D;HE31;EM30;HE30;UMA;UMHA;UCC;UMC;UMHC
SAFTY NOTES
PARTS UNDER VOLTAGE
Electric motors contain live electric parts.
Removal of protective components, incorrect use or insufficient maintenance
could cause death, serious injury or material damages.
Operate the motor correctly and carry out regular maintenance.
ROTATING PARTS
Electric motors contain dangerous rotating parts. Removal of protective
components, incorrect use or insufficient maintenance could cause death,
serious injury or material damages.
Operate the motor correctly and carry out regular maintenance.
Shaft of motor must be protected
HOT SURFACES
Electric motors have hot surfaces.
Removal of protective components, incorrect use or insufficient maintenance
could cause death, serious injury or material damages.
Operate the motor correctly and carry regular maintenance.
Allow the motor to cool before starting work on it.
All the work on this motor should be carried out by a qualified person.
All safety measures must be followed and the correct equipment used to carry
out work on the motor.
This motor is intended for industrial installation. It complies with the harmo-
nized standards EN 60034-1. Use in hazardous areas is not permitted.
The electric motor should not be put in to service until the machine into which
they have been incorporated has been declared to conform with the Machinery
Directive LVD 2006 / 4295 / EC.
Incoming Inspection
On receipt 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.
Transport and Storage
Should the motors need to be transported on to another destination, care must be
taken to prevent the motor from being exposed to harmful effects.
The motors should be stored in a clean, dry and vibration free place.
Mounting
The installation 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 assembly of the cou-
pling if required.
NOTE: Never force the coupling with impact shocks, as this can 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 instruc-
tions to prevent undue bearing wear.
The bearing life will increased as a result of precise the alignment.
For belt transmission, the pulley should not be too small in diameter or greater in
width 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/failure or
shaft breakage.
The motor must be mounted in such a way that free circulation of fresh cooling air
is guarantied.
Start Up
If the motor has been out of service or stored for a long period of time, it is recom-
mended 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
of Winding
20ºC
30ºC
40ºC
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
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Voltage Service
<600V
6MΩ
3MΩ
1,5MΩ
than 100ºC degree.
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