Maintenance
Engine
102 9831/0650-3 102
Maintenance operations can be divided into routine and extraordinary maintenance operations. In both cases,
all operations must be authorised by the safety representative and they must be carried out when the machine
is turned off and insulated from the electric installation or from the power mains.
High qualified mechanical or electrical technicians must carry out maintenance operations and any fault search
since all operations described hereunder could put personnel in serious danger. It is also highly recommended
to take all the necessary precautions so as to prevent an inadvertent starting of the machine during maintenance
and fault search operations.
Routine maintenance operations can be done as follows:
• Assessment of findings conditions after long periods of storage or inactivity.
• Assessment, on a regular basis, of correct functioning (absence of anomalous noises or vibrations).
• Mechanical inspections on all fastening bolts and, in particular, on electric connections.
• External cleaning of generator.
Internal and External Cleaning of the Generator
For the external cleaning of the generator, you can use compressed air. The use of dry-cleaners and detergent
fluids is strictly forbidden. In the stationary condition the standard protection degree of the generator is IP21,
therefore, use of fluids could cause anomalies or even short circuits.
Extraordinary maintenance operations can be summed up as follows:
1. Maintenance and replacement (if necessary) of bearings.
2. Cleaning of air filters (if available).
3. Cleaning of windings.
4. Replacement of diode bridge.
5. Replacement of exciter.
6. Replacement of voltage regulator.
7. Check of residual voltage.
Clean
Prior to approaching or touching the alternator, ensure that it is not live and it is at room temperature; at this
stage it is possible to clean it on the outside using compressed air.
Figure 82.
Never use liquids or water. Do not clean the inside electric components with compressed air, because this may
cause short circuits or other anomalies.
To Next Page
Loading...
Need help?
General
