Siemens Simotics SD 1LE7, Руководство по эксплуатации

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1LE7
28
A5E36065207, 04/2018
– Regreasing should be carried out when the motor is running (max. 3600 rpm).
The bearing temperature can rise significantly at first, and then drops to the normal value again when the excess grease is
displaced out of the bearing.
WARNING
Rotor can fall out
If the machine is in a vertical position, the rotor can fall out while work is being performed on the locating bearing. This can
result in death, serious injury or material damage.
Support or relieve the rotor when carrying out work with the machine in a vertical position.
9.2.2 Cleaning
Cleaning the grease ducts and spent grease chambers
The spent grease collects outside each bearing in the spent grease chamber of the outer bearing cap. When replacing
bearings, remove the spent grease.
Note
Dismantle the bearing cartridges to replace the grease in the lubrication duct.
Cleaning the cooling air ducts
Regularly clean the cooling air ducts through which the ambient air flows.
The frequency of the cleaning intervals depends on the local degree of fouling.
NOTICE
Damage to the machine
Material damage can occur if you direct compressed air in the direction of the shaft outlet or machine openings.
• Avoid pointing compressed air directly onto shaft sealing rings or labyrinth seals of the machine.
Regularly remove fluff balls, fabric remnants, and similar types of contamination from the fan cover of machines for the
textile industry (particularly at the air passage opening between the fan cover and cooling fins of the machine enclosure) to
ensure that the cooling air can flow without obstruction.
9.2.3 Drain condensate
If there are condensation drain holes present, open these at regular intervals, depending on climatic conditions.
WARNING
Hazardous voltage
The winding can be damaged if objects are introduced into the condensation holes (optional). This can lead to
death, serious injury or material damage.
Note the following to maintain the degree of protection:
•
Switch off the machine so that it is in a no-voltage condition before you open the condensation drain holes.
• Close the condensation drain holes, e.g. using T-plugs, before commissioning the machine.
NOTICE
Reduction of the degree of protection
If condensation drain holes are not closed, then this can result in material damage to the motor.
In order to maintain the degree of protection, after the condensation has been drained, you must close all of the drain
holes.