INSPECTION AND MAINTENANCE
REV6 /REV3 OI 248 (EN) 67
9 Inspection and Maintenance
Inspection and maintenance procedures are carried out according
to a schedule.
Reconditioning work is a function of breaker operating frequency
and the breaking current load carried by the circuit breaker.
The specified inspection and maintenance intervals apply to normal
operating conditions. Extreme ambient conditions such as
- continuously high ambient temperatures,
- heavy dust accumulation,
- continuously high humidity,
- severe air pollution by aggressive gases or vapors,
- and service in coastal areas
may make shorter inspection and maintenance intervals necessary.
The intervals are as follows:
Inspection: On an occasional basis during routine in-
spections, after 6 years at the latest;
Maintenance: After 12 and 24 years.
The spring operating mechanisms have already been provided with
lifetime lubrication at the factory and are therefore maintenance-
free under normal operating conditions.
Maintenance and reconditioning may only be performed by trained
technicians.
Qualified personnel can be requested from GE. The customer's
staff can be trained at the manufacturer's plant. GE offers training
courses for this purpose.
Oil and cleaning additives attack the silicone surface of the insu-
lator.
Therefore:
- Clean and wash the silicone shielding using only water or
isopropyl alcohol.
Improper relubrication of the mechanisms may lead to problems
or cause the mechanism to malfunction.
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