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50 l Installation, Operation and Maintenance Manual – Synchronous Motors – S Line – Brushless – Horizontal 11866576
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 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
EQUIPMENT Weekly Monthly 3 months 6 months Annual 3 years Notes
STATOR
Visual inspection of the stator. x
Cleanliness control. x
Inspection of the slot wedges. x
Check of the fastening of the stator terminals. x
Measurement of the winding insulation
resistance.
x
ROTOR
Cleanliness control.
x
Visual inspection.
x
Inspection of the shaft (wear, incrustations).
x
EXCITER
Cleanliness control. x
Diode, thyristor and varistor tests. x
Winding inspection. x
Inspection of connections and operation of
triggering circuit.
x
BEARINGS
Control of noise, vibration, oil flow, leaks and
temperature.
x
Lubricant quality control. x
Inspection of the bearing shell and shaft journal
(sleeve bearing).
x
Lubricant change.
According to interval
indicated on the bearing
nameplate.
IR-WATER HEAT EXCHANGER
Inspection of the radiators. x
Cleaning of the radiators x
Replacement of the gaskets of the radiator
heads.
x
IR-
IR HEAT EXCHANGER
Cleaning of the ventilation ducts. x
Inspection of the ventilation. x
IR FILTER(S)
Inspection, cleaning and replacement, if
necessary.
Every 2 months.
TERMINAL BOXES AND GROUNDING TERMINALS
Internal cleaning of the terminal boxes. x
Retightening of the screws. x
PROTECTION AND CONTROL EQUIPMENT
Operation test. x
Recording of the values. x
Disassembly and operation test. x
COUPLING
Inspection of the alignment. x
Check after the first week
of operation.
Inspection of the coupling fastening. 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
BRAKE
Verification of pad wearing.
According to the
equipment manual.
Operating control.
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