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11371757 Installation, operation and maintenance manual – Squirrel cage motor – M line – Vertical l 51
9 MAINTENANCE PLAN
The maintenance plan described in Table 9.1 is only referential, and the intervals between each maintenance intervention
may vary according to the motor location and operating conditions.
For the associated equipment, such as the water supply unit or control and protection system, it is necessary to refer to their
specific manuals.
Table 9.1: Maintenance plan
MOTOR PART Weekly Monthly
months
months
Annual
years
STATOR
Visual inspection of the stator.
x
Cleanliness control.
x
Inspection of the slot wedges.
x
of the fastening of the stator
terminals.
x
Measurement of the winding insulation
resistance.
x
ROTOR
Visual inspection.
Cleaning control.
Inspection of the shaft (wear, incrustations).
x
BEARINGS
Control of noise, vibration, oil flow, leaks and
temperature.
x
Lubricant quality control.
x
Inspection of the bearing shell and shaft
(sleeve bearing).
x
Lubricant change.
According to the period indicated on
the bearing nameplate.
AIR-WATER HEAT EXCHANGER
Inspection of the radiators.
x
Cleaning of the radiators.
x
Inspection of the radiator sacrificial anodes (if
any).
x
Increase the inspection frequency in
case of excessive corrosion.
of the gaskets of the radiator
heads.
x
AIR-AIR HEAT EXCHANGER
Cleaning of the ventilation ducts.
x
Inspection of the ventilation.
x
AIR FILTER(S)
Inspection, cleaning and replacement, if
necessary.
Every 2 months.
PROTECTION AND CONTROL EQUIPMENT
Record of the values.
x
Operation test.
x
Disassembly and operation test.
x
COUPLING
Inspection of the alignment.
x
Check after the first week of operation.
Inspection of the fastening.
x
Inspection of the anti-reversion ratchet (if any).
x
WHOLE MOTOR
Inspection of noise and vibration.
x
Drainage of condensed water.
x
Retightening of the screws.
x
Cleaning of the terminal boxes.
x
Retightening of electrical and grounding
connections.
x
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