WEG MGW - Page 9

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11371757 Installation, operation and maintenance manual – Squirrel cage motor – M line – Vertical l 9
7.3.4 Reimpregnation .................................................................................................................................. 37
7.3.5 Insulation Resistance .......................................................................................................................... 38
7.4 COOLING SYSTEM MAINTENANCE ............................................................................................... 38
7.5 RADIATOR MAINTENANCE ............................................................................................................ 38
7.6 VIBRATION...................................................................................................................................... 38
7.7 ANTI-REVERSION RATCHET MAINTENANCE ................................................................................ 38
7.8 SHAFT GROUNDING DEVICE ......................................................................................................... 38
7.9 BEARING MAINTENANCE .............................................................................................................. 39
7.9.1 Grease-lubricated rolling bearings ....................................................................................................... 39
7.9.1.1 Instructions for lubrication .................................................................................................... 39
7.9.1.2 Procedures for rolling bearing relubrication .......................................................................... 39
7.9.1.3 Rolling bearing relubrication with drawer device for grease removal ..................................... 39
7.9.1.4 Type and amount of grease ................................................................................................. 39
7.9.1.5 Alternative greases .............................................................................................................. 40
7.9.1.6 Procedure for changing the grease ...................................................................................... 41
7.9.1.7 Low temperature greases .................................................................................................... 41
7.9.1.8 Grease compatibility ............................................................................................................ 41
7.9.1.9 Disassembly – vertical bearings ........................................................................................... 41
7.9.1.9.1 Before disassembling ...................................................................................... 41
7.9.1.9.2 Lower bearing disassembly ............................................................................. 42
7.9.1.9.3 Upper bearing disassembly ............................................................................. 42
7.9.1.10 Bearing assembly ................................................................................................................ 42
7.9.2 Oil-lubricated rolling bearing ................................................................................................................ 42
7.9.2.1 Lubrication instructions........................................................................................................ 43
7.9.2.2 Oil type................................................................................................................................ 43
7.9.2.3 Oil change ........................................................................................................................... 43
7.9.2.4 Bearing operation ................................................................................................................ 43
7.9.2.5 Bearing disassembly ........................................................................................................... 44
7.9.2.6 Bearing assembly ................................................................................................................ 45
7.9.3 Rolling bearing replacement ................................................................................................................ 45
7.9.4 Sleeve bearings .................................................................................................................................. 45
7.9.4.1 Bearing data........................................................................................................................ 45
7.9.4.2 Bearing installation and operation ........................................................................................ 45
7.9.4.3 Cooling by water circulation ................................................................................................. 45
7.9.4.4 Oil change ........................................................................................................................... 45
7.9.4.5 Sealing ................................................................................................................................ 46
7.9.4.6 Sleeve bearing operation ..................................................................................................... 46
7.9.4.7 Sleeve bearing maintenance ................................................................................................ 46
7.9.4.8 Bearing disassembly and assembly ..................................................................................... 46
7.9.4.8.1 Thrust bearing (upper) ..................................................................................... 46
7.9.4.8.2 Guide bearing (lower) ...................................................................................... 47
7.9.5 Bearing protection .............................................................................................................................. 47
7.9.5.1 Protection settings .............................................................................................................. 47
7.9.5.2 Disassembly/assembly of the sleeve bearing temperature sensors ....................................... 47
8 MOTOR DISASSEMBLY AND ASSEMBLY .......................................................... 48
8.1 PARTS LIST .................................................................................................................................... 48
8.2 DISASSEMBLY ............................................................................................................................... 48
8.3 ASSEMBLY ..................................................................................................................................... 48
8.4 AIR-GAP MEASUREMENT .............................................................................................................. 48
8.5 TIGHTENING TORQUE ................................................................................................................... 49
8.6 SPARE PARTS ................................................................................................................................ 50
9 MAINTENANCE PLAN ....................................................................................... 51
10 ABNORMALITIES, CAUSES AND SOLUTIONS ................................................... 52
11 DECLARATION OF CONFORMITY ..................................................................... 54
12 ENVIRONMENTAL INFORMATION ..................................................................... 55
12.1 PACKAGE ....................................................................................................................................... 55
12.2 PRODUCT ....................................................................................................................................... 55
12.3 HAZARDOUS WASTE ..................................................................................................................... 55
13 SERVICE NETWORK ........................................................................................ 55