ABB SACE Emax 2 Series Operating Instructions Manual page 274
Low voltage air circuit-breaker
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Cleaning and lubrication of the
operating mechanism
Inspection of electrical and
mechanical accessories
271 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
To clean and lubricate (E1.2 Figure 151 - Lubrication of the shafts and closing and opening latches; E2.2,
E4.2 and E6.2 Figure 152 - Lubricating the shaft and closing hook):
1.
Clean the closing shaft and closing hook at the point indicated. In the case of excessive deposits
you can use a laminate thinner such as Chemma 18 or equivalent.
2.
Lubricate the closing shaft and closing latches in the indicated points using Mobilgrease 28
(EXXON MOBIL).
3.
Make sure that the closing shaft is free to rotate.
Figure 151 - Lubrication of the shafts and closing and opening latches
Figure 152 - Lubricating the shaft and closing hook
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), if present, 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.
Putting into service and maintenance
3 - E1.2 maintenance and E2.2, E4.2 and E6.2 first level maintenance
ABB | SACE Emax 2
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