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50 WILO SE 2019-10
8.3 Shut-down....................................................................................................................................................................................................... 80
8.4 Removal............................................................................................................................................................................................................80
9 Maintenance and repair.......................................................................................................................................................... 82
9.1 Personnel qualifications.................................................................................................................................................................................83
9.2 Operator responsibilities................................................................................................................................................................................ 83
9.3 Operating fluid ................................................................................................................................................................................................ 83
9.4 Maintenance intervals.................................................................................................................................................................................... 84
9.5 Maintenance measures .................................................................................................................................................................................. 85
9.6 Repairs .............................................................................................................................................................................................................. 88
10 Faults, causes and remedies .................................................................................................................................................. 90
11 Spare parts............................................................................................................................................................................... 93
12 Disposal.................................................................................................................................................................................... 93
12.1 Oils and lubricants........................................................................................................................................................................................... 94
12.2 Protective clothing .........................................................................................................................................................................................94
12.3 Information on the collection of used electrical and electronic products.............................................................................................. 94
13 Ex rating................................................................................................................................................................................... 94
13.1 Identification of Ex-rated pumps................................................................................................................................................................. 94
13.2 Protection class............................................................................................................................................................................................... 94
13.3 Intended use.................................................................................................................................................................................................... 94
13.4 Electrical connection...................................................................................................................................................................................... 95
13.5 Commissioning................................................................................................................................................................................................97
13.6 Maintenance and repair.................................................................................................................................................................................. 97
14 Appendix.................................................................................................................................................................................. 97
14.1 Tightening torques ......................................................................................................................................................................................... 98
14.2 Frequency converter operation .................................................................................................................................................................... 98
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