ABB SACE Emax 2 Series Operating Instructions Manual page 282
Low voltage air circuit-breaker
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Inspection of electrical and
mechanical accessories
279 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
Continued from the previous page
Figure 164 - Lubricating the opening hook
• In the case of deformed or rusty springs, rings missing or severe wear of the operating device,
contact ABB Sace.
Check the accessories:
1.
Check that the accessories are securely fixed to the circuit-breaker.
2.
Check that the accessories are connected correctly to the circuit-breaker.
3.
Make sure that the coils (YU-YO-YC) are in good condition (no excessive wear and tear, overheating,
rupture).
4.
Make sure that the mechanical operation counter functions correctly (if present) by operating the
circuit-breaker.
5.
Check the wear on the brushes of the gearmotor and if necessary replace them.
NOTE: it is advisable to replace the gear motor if it has performed more than 10000 spring
charging operations or reached 50% of the declared mechanical life of the circuit-breaker.
ABB | SACE Emax 2
Putting into service and maintenance
4 - E2.2, E4.2 and E6.2 second level maintenance
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