20 l
Installation, operation and maintenance manual – Squirrel cage motor – M line – Vertical 11371757
3.3.4
Preparation for commissioning
3.3.4.1
Cleaning
The internal and external parts of the motor must be
free of oil, water, dust and dirt.
Remove the rust inhibitor from the exposed surfaces
with a cloth damped in a petroleum-based solvent;
Make sure that the bearings and cavities used for
lubrication are free of dirt and that the cavity plugs are
correctly sealed and tightened. Oxidation and marks on
the bearing seats and on the shaft must be carefully
removed.
3.3.4.2
Bearing inspection
ATTENTION
If the motor storage period exceeds six months,
the sleeve bearings must be disassembled,
inspected and cleaned, before starting the
motor operation.
The sleeve bearings without oil tank (dry
crankcase), regardless of the motor storage
period, should necessarily be disassembled,
inspected and cleaned before starting the motor
operation.
Reassemble the sleeve bearings and carry out
lubrication.
Contact WEG to perform this procedure.
3.3.4.3
Bearing lubrication
Use the lubricant specified for bearing lubrication.
Information on the bearings and lubricants are indicated
on the bearing nameplates, and the lubrication must be
done as described in section 1.1
of this manual, always
considering the type of bearing.
3.3.4.4
Insulation resistance verification
Before putting the motor into operation, the insulation
resistance must be measured according to section 3.3.3.2
of this manual.
3.3.4.5
Air-water heat exchanger
When starting the motor, ensure that the water
circulates freely through the radiator;
The radiator bolts should be tightened with torques of
40 to 50Nm;
Make sure that there is no water leakage. Check the
radiator gaskets, and replace if necessary;
Check the heat exchanger sealing rubbers, and replace
them if necessary.
3.3.4.6
Others
Follow the other procedures described in section 6 of this
manual before putting the motor into operation.
