Robuschi KRVS - English

23
ENGLISH (per l’italiano vedi pagina 7)
1 CHACTERISTICS OF KRVS ........................................................................................................................................................... 24
1.1 Functional principle .................................................................................................................................................................. 24
1.2 Construction ............................................................................................................................................................................ 24
1.2.1 Bearing bracket ................................................................................................................................................................ 24
1.2.2 Shaft seal ......................................................................................................................................................................... 24
2 PERFORMANCE LIMITS AND WORKING CONDITIONS .............................................................................................................. 25
2.1 Operating environment and conveyed liquids ........................................................................................................................... 25
2.2 Operation Limits ...................................................................................................................................................................... 25
2.3 Noise Emissions ...................................................................................................................................................................... 26
2.4 Forbidden uses ........................................................................................................................................................................ 27
2.5 Residual Risks ......................................................................................................................................................................... 27
3 STORAGE ...................................................................................................................................................................................... 28
3.1 Handling .................................................................................................................................................................................. 28
3.2 Unpacking ............................................................................................................................................................................... 28
3.3 Preservation ............................................................................................................................................................................ 28
Anti-rust oil .................................................................................................................................................................................... 28
4 INSTALLATION .............................................................................................................................................................................. 29
4.1 On-site installation ................................................................................................................................................................... 29
4.2 Connections............................................................................................................................................................................. 29
4.2 Motor coupling ......................................................................................................................................................................... 29
4.3 Accessories installation ............................................................................................................................................................ 30
4.3.1 Anti-cavitation valve VGI................................................................................................................................................... 30
4.3.2 Check valve ...................................................................................................................................................................... 30
4.4 Installation diagrams ................................................................................................................................................................ 30
4.4.1 Partial recirculation circuit ................................................................................................................................................. 30
4.4.2 Total recirculation circuit ................................................................................................................................................... 30
4.5 Electric connections ................................................................................................................................................................. 30
5 OPERATION ................................................................................................................................................................................... 32
5.1 Preliminary controls ................................................................................................................................................................. 32
5.2 First start-up ............................................................................................................................................................................ 32
5.3 Operation ................................................................................................................................................................................. 32
5.3.1 Service liquid flow rate ...................................................................................................................................................... 32
5.3.2 Cooling liquid flow rate ..................................................................................................................................................... 33
5.4 Stopping the unit ...................................................................................................................................................................... 33
5.5 Black-out ................................................................................................................................................................................. 33
6 MAINTENANCE .............................................................................................................................................................................. 34
6.1 Cleaning .................................................................................................................................................................................. 34
6.2 Coupling .................................................................................................................................................................................. 34
6.2.1 Direct flexible coupling for /SG version ............................................................................................................................. 34
6.2.2 Direct flexible coupling ...................................................................................................................................................... 35
6.3 Bearings .................................................................................................................................................................................. 35
6.4 Soft packing replacement (/TT version) .................................................................................................................................... 35
6.5 Automatic discharge valve replacement ................................................................................................................................... 35
6.6 Electric motor maintenance...................................................................................................................................................... 36
6.7 Transferring KRVS ................................................................................................................................................................... 36
6.7.1 Transferring in the site ...................................................................................................................................................... 36
6.7.2 Transferring in an other site .............................................................................................................................................. 36
6.8 Spare parts .............................................................................................................................................................................. 36
6.9 Demolition of KRVS ................................................................................................................................................................. 36
7 TROUBLESHOOTING .................................................................................................................................................................... 37
8 TECHNICAL TABLES .................................................................................................................................................................... 38
8.1 Dimensions ...................................................................................................................................................................... 38
8.1.1 KRVS 7-21 ................................................................................................................................................................... 38
8.1.2 KRVS 23-60 ................................................................................................................................................................. 39
8.2 Sectional drawing .................................................................................................................................................................... 41
8.2.1 RVS 3 – 21 .................................................................................................................................................................. 41
8.2.2 RVS 23 – 25 ................................................................................................................................................................. 42
8.2.3 RVS 30 – 60 ................................................................................................................................................................. 43