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Recommended maintenance and
lubrication
Periodic maintenance and lubrication should
include all the tasks shown in
Table 4: Maintenance tasks.
Recommended procedures for each of the
listed tasks are provided in this section of the
instruction manual or in the maintenance
section of the operator instruction manuals:
Type SDV7-SE circuit breaker type 3AH35-
SE stored-energy operator, E50001-F710-
K376-X-XXXX
Type SDV7-MA circuit breaker type 3AH35-
MA magnetic-actuator operator, E50001-
F710-K378-X-XXXX.
The list of tasks in Table 4: Maintenance tasks
does not represent an exhaustive survey of
maintenance steps necessary to ensure safe
operation of the equipment.
Particular applications may require further
procedures. Should further information be
desired or should particular problems arise
not covered sufficiently for the Purchaser's
purposes, the matter should be referred to
Siemens at +1 (800) 347-6659 or
+1 (919) 365-2200 outside the U.S.
For a quick reference to these tasks, refer to
periodic maintenance and lubrication tasks in
Table 8 on page 44.
Note: A preventive maintenance program is
not intended to cover reconditioning or major
repair, but should be designed to reveal, if
possible, the need for such actions in time to
prevent malfunctions during operation.
Primary-power path checks
Cleanliness check
Inspection of flexible connectors
Magnetic-actuator operator-mechanism checks
Maintenance and lubrication
Fastener check
Capacitor charging check
Contact-erosion check
Stored-energy operator-mechanism checks
Maintenance and lubrication
Fastener check
Manual spring charging check
Contact-erosion check
Electrical-control checks
Wiring and terminals checks
Capacitor charging check
Electrical close and trip check
Vacuum-integrity check
High-potential test
Insulation test
Contact-resistance test
Inspection and cleaning of circuit breaker insulation
Functional tests
Table 4: Maintenance tasks
Failure to properly maintain the equipment could result in death,
serious injury or equipment failure, and can prevent successful
functioning of connected apparatus.
The instructions contained herein should be carefully reviewed, understood
and followed.
The maintenance tasks described in Table 4: Maintenance tasks on page 37
and in the type 3AH35-SE stored-energy operator instruction manual
E50001-F710-K376-X-XXXX or type 3AH35-MA magnetic-actuator
instruction manual E50001-F710-K378-X-XXXX must be performed
regularly.
Inspection items and tests
37
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