11371757 Installation, operation and maintenance manual – Squirrel cage motor – M line – Vertical
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3.3.3.11
Maintenance plan during storage
During the storage period, the motor maintenance must be performed and recorded according to the plan described in
Table 3.1.
Table 3.1: Storage plan
Monthly
2
months
6
months
2
years
Before
start-up
Notes
STORAGE LOCATION
Inspect the cleanliness conditions
X
X
Inspect the humidity and temperature
conditions
X
Inspect for insect infestation signs
X
PACKAGE
Inspect for damage
X
Check the internal relative humidity
X
Replace the desiccant in the package (if any)
X
Whenever necessary.
SPACE HEATER
Check the operating conditions
X
Measure the circuit voltage and frequency
X
Check the function of the signal system (if
any)
X
WHOLE MOTOR
Perform external cleaning
X
X
Check the painting conditions
X
Check the rust inhibitor on the exposed
machined parts
X
Reapply the rust inhibitor
X
Inspect the
rubber seals and gaskets
X
Complete predictive maintenance
According to section 3.3.3.10
WINDINGS
Measure the winding temperature
X
X
Measure the insulation resistance
X
X
Measure the polarization index
X
X
TERMINAL BOX AND GROUNDING TERMINALS
Clean the interior of the terminal boxes
X
X
Inspect the seals and gaskets
X
X
ROLLING BEARINGS
Rotate the shaft
X
Relubricate the bearing
X
Disassemble and clean the bearing
If the storage period exceeds 2
years.
SLEEVE BEARINGS
Rotate the shaft
X
Apply corrosion inhibitor spray
X
Clean the bearings
X
Change the oil
If the storage period exceeds 2
years.
