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4 WILO SE 2017-12
9 Maintenance and repair.......................................................................................................................................................... 33
9.1 Personnel qualifications................................................................................................................................................................................. 34
9.2 Operator responsibilities................................................................................................................................................................................ 34
9.3 Operating fluid ................................................................................................................................................................................................ 34
9.4 Maintenance intervals.................................................................................................................................................................................... 34
9.5 Maintenance measures .................................................................................................................................................................................. 35
10 Faults, causes and remedies .................................................................................................................................................. 37
11 Spare parts............................................................................................................................................................................... 40
12 Disposal.................................................................................................................................................................................... 40
12.1 Oils and lubricants........................................................................................................................................................................................... 40
12.2 Protective clothing .........................................................................................................................................................................................40
12.3 Information on the collection of used electrical and electronic products.............................................................................................. 40
13 Appendix.................................................................................................................................................................................. 40
13.1 Operation with frequency converter............................................................................................................................................................ 41
13.2 Ex rating ........................................................................................................................................................................................................... 41
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