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4 WILO SE 2019-01
9 Maintenance and repair.......................................................................................................................................................... 32
9.1 Personnel qualifications................................................................................................................................................................................. 33
9.2 Operator responsibilities................................................................................................................................................................................ 33
9.3 Operating fluid ................................................................................................................................................................................................ 33
9.4 Maintenance intervals.................................................................................................................................................................................... 34
9.5 Maintenance measures .................................................................................................................................................................................. 35
9.6 Repairs .............................................................................................................................................................................................................. 39
10 Faults, causes and remedies .................................................................................................................................................. 41
11 Spare parts............................................................................................................................................................................... 44
12 Disposal.................................................................................................................................................................................... 44
12.1 Oils and lubricants........................................................................................................................................................................................... 44
12.2 Water-glycol mixture..................................................................................................................................................................................... 44
12.3 Protective clothing .........................................................................................................................................................................................44
12.4 Information on the collection of used electrical and electronic products.............................................................................................. 44
13 Appendix.................................................................................................................................................................................. 44
13.1 Tightening torques ......................................................................................................................................................................................... 45
13.2 Operation with frequency converter............................................................................................................................................................ 45
13.3 Ex rating ........................................................................................................................................................................................................... 46
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