Decommissioning And Disposal; Troubleshooting - Sulzer MT Manual De Empleo Y De Mantenimiento

- Translation of the original instructions
Measurement of the insulation resistance must be carried out with the motor off and cold. Higher motor temperature values considerably
lower the insulation resistance values.
·
·
The measurement must last for one minute.
The resistance of a new winding must be greater than 20MW at an ambient temperature of 20°C with a test voltage of 500Vdc.
In case of different ambient temperature values, refer to TAB.XI for the correction values. The measured value must be multiplied by the
correction factor corresponding to the ambient temperature at which the measurement was made according to the following formula:
R : Insulation resistance measured at 20°C
20°C
R
: Insulation resistance measured at ambient temperature
ta
Fc: Correction factor
û
8.

DECOMMISSIONING AND DISPOSAL

At the end of operating life of the motor or any of its parts, the disposal must be carried out according to local regulations in force. This also
applies to the lubricants, with particular regard if classified toxic or harmful, and for the packaging.
Refer to the information on disposal in accordance with the WEEE Directive 2012/19/EU given in this manual.
In case it is necessary to return the motor to the supplier:
® clean the motor thoroughly;
® if necessary, provide for a complete decontamination of the product;
® remove any residual liquids or greases (lubricants etc ...);
® do not return the motor open;
® protect the motor from the risk of corrosion and pack it carefully;
® indicate to the supplier any safety measures applied.
·
9.

TROUBLESHOOTING

FAILURE OR MALFUNCTION
The motor does not
start (coupled or not
!
coupled to the driven
equipment)
The motor does not
start (only if not
!
coupled to the driven
equipment)
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The motor must be disconnected from the electrical power supply.
In the case of single-phase motors, discharge the capacitor completely before the test.
R =R *Fc
20°C ta
Do not touch the motor during and after measuring the insulation resistance. After the measurement,
discharge the windings before carrying out any other operation.
It is the responsibility of the person returning the material to ensure that all necessary measures have been
taken to guarantee the safety of the product and that the return is in accordance with the provisions of the
law in force.
ID PROBABLE CAUSE
There is no voltage coming to the motor
A.1 →
cable
A.2 → The fuses are blown
A.3 → Connection error
A.4 → The power cable is interrupted
A.5 → Rotor shaft blocked
The capacitor is faulty (only for single-phase
A.6 →
motors)
Torque required by the driven equipment
B.1 →
too high
B.2 → Too high voltage drop
R >20M R *Fc>20M
20°C ta
Check the power supply and related control and protection
equipment
Replace the fuses
Correct the connection according to the connection
diagrams
Repair or replace the cable
Check the free rotation of the shaft. Replace any damaged
components (bearings, etc ...)
Replace the capacitor
Check the correct conditions of use of the driven
equipment. If possible, reduce the load applied during
start-up. Check that the motor is suitable for driving the
equipment.
Check the sizing of the power supply (cable section,
transformer, switches etc ...)
SOLUTION