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Chapter 7 Maintenance
7.1 Preventive maintenance
A synchronous machine often forms an important part of a larger installation and
if it is supervised and maintained properly, it will be reliable in operation and
guarantee a normal life time.
The purpose of maintenance is therefore to:
•
Secure that the machine will function reliably without any unforeseen actions
or interventions.
•
Estimate and plan service actions in order to minimize down time.
The difference between supervision and maintenance is rather vague. Normal
supervision of operation and maintenance includes logging of operating data such
as load, temperatures, vibrations, as well as measurement of the insulation
resistances.
After commissioning or maintenance, the supervision should be intensive.
This chapter presents recommendations regarding maintenance program, and
work instructions how to conduct common maintenance tasks. These instructions
and recommendations should be read carefully and be used as a basis when
planning the maintenance program. Note that the maintenance recommendations
presented in this chapter represent a minimum level of maintenance. By
intensifying maintenance and supervision activities, the reliability of the machine
and the long-term availability will increase.
The data obtained during supervision and maintenance is useful for estimating and
planning additional service. In case some of this data indicates something out of
the ordinary, the trouble shooting guides in Chapter 8. Troubleshooting, will aid
in locating the reason for the trouble. ABB recommends the use of experts in the
creating maintenance programs, as well as in performing the actual maintenance
and possible trouble shooting.
The ABB After Sales organization is happy to assist in these issues. The ABB
After Sales contact information can be found in Chapter 9.1.5. After sales contact
information.
An essential part of the preventative maintenance is to have a selection of suitable
spare parts available. The best way to have access to critical spare parts is to keep
them on stock. Ready-made spare part packages can be obtained from the ABB
After Sales, see Chapter 9.2. Spare parts.
7.2 Safety precautions
Before working on any electrical equipment, general electrical safety precautions
are to be taken into account, and local regulations are to be respected in order to
prevent personnel injury. This should be made according to instructions of the
security personnel.
Personnel performing maintenance on electrical equipment and installations must
be highly qualified. The personnel must be trained in, and familiar with, the
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