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Megabreak® - Maintenance guide
M
ain
tenanc
e guide
39
1 – Warning
40
2 - Frequency of maintenance
41
3 - Preparatory work
43
4 - Maintenance procedures
44
4.1 MCH - Mechanism
44
4.1.1 MCH-I - Correct working and lubricating
44
4.1.2 MCH-II - The seals
46
4.1.3 MCH-III - The position
48
4.2 SCK - Shock-absorbing system
49
4.3 CTS - Arc chutes
50
4.4 MNC - Main contacts
51
4.4.1 MNC-I - Visual
51
4.4.2 MNC-II - Sequence
52
4.5 DWT - Draw-out system
53
4.5.1 DWT-I - Right working of draw-out system
53
4.5.2 DWT-II Insulation shutter
54
4.5.3 DWT-III Cluster contacts
55
4.5.4 DWT-IV Sliding aux contacts
56
4.5.5 DWT-V Clean and Lubricant draw-out chassis
57
4.5.6 DWT-VI Draw-out mechanism
57
4.6 TRM - Power terminals
58
4.7 AXL - Auxiliary
59
4.7.1 AXL-I - Visual and wiring check
59
4.7.2 AXL-II - Functional Test
60
4.8 ECSR - Motor, UVR, CC, ST
62
4.8.1 ECSR-I - Functional tests
62
4.8.2 ECSR-II - Lubricating of motor gear
62
4.9 MCSR - Mechanical Accessories
63
4.9.1 MCSR-I - Open position lock
63
4.9.2 MCSR-II - Draw-out shutter key lock
63
4.10 NTK - Mechanical interlock
65
4.11 PRT - Trip Unit
67
4.12 TSD - Functional test with Test device
68
5 - Troubleshooting
69
Index