
4.6.1 General piping checklist ................................................................................................................45
4.6.2 Suction-piping checklist.................................................................................................................48
4.6.3 Discharge piping checklist.............................................................................................................50
5 Commissioning, Startup, Operation, and Shutdown ...................................................................................52
5.1 Preparation for startup............................................................................................................................. 52
5.2 Remove the coupling guard .................................................................................................................... 53
5.3 Check the rotation ...................................................................................................................................55
5.4 Impeller-clearance check ........................................................................................................................ 55
5.4.1 Impeller clearances (NM 3196) .....................................................................................................56
5.5 Impeller-clearance setting .......................................................................................................................56
5.5.1 Set the impeller clearance - dial indicator method (all except CV 3196, CV 3198, and LF 3196
size 1x1.5-4) ...................................................................................................................................57
5.5.2 Set the impeller clearance - feeler gauge method (all except CV 3196, CV3198 and LF 3196 size
1x1.5-4)............................................................................................................................................58
5.6 Couple the pump and driver .................................................................................................................... 59
5.6.1 Install the coupling guard .............................................................................................................. 60
5.6.2 Bearing lubrication ........................................................................................................................65
5.7 Shaft-sealing options...............................................................................................................................66
5.7.1 Mechanical seal options................................................................................................................ 67
5.7.2 Connection of sealing liquid for mechanical seals ........................................................................67
5.8 Install the shaft guard - if provided ..........................................................................................................67
5.9 Pump priming ..........................................................................................................................................68
5.9.1 Prime the pump with the suction supply above the pump............................................................. 68
5.9.2 Prime the pump with the suction supply below the pump ............................................................. 68
5.9.3 Other methods of priming the pump..............................................................................................69
5.10 Start the pump.......................................................................................................................................69
5.11 i-ALERT® Equipment Health Monitor....................................................................................................70
5.12 Pump operation precautions ................................................................................................................. 70
5.13 Shut down the pump ............................................................................................................................. 72
5.14 Deactivate the i-ALERT® Equipment Health Monitor............................................................................72
5.15 Reset the i-ALERT® Health Monitor .....................................................................................................72
5.16 Make the final alignment of the pump and driver .................................................................................. 72
6 Maintenance..................................................................................................................................................... 74
6.1 Maintenance schedule ............................................................................................................................ 74
6.2 Bearing maintenance .............................................................................................................................. 75
6.2.1 Lubricating-oil requirements.......................................................................................................... 75
6.2.2 Regrease the grease-lubricated bearings .....................................................................................76
6.2.3 Lubricate the bearings after a shutdown period ............................................................................77
6.3 Shaft seal maintenance...........................................................................................................................78
6.3.1 Mechanical-seal maintenance.......................................................................................................78
6.4 Disassembly ............................................................................................................................................ 78
6.4.1 Disassembly precautions .............................................................................................................. 78
6.4.2 Tools required................................................................................................................................ 79
6.4.3 Drain the pump..............................................................................................................................79
6.4.4 Remove the coupling ....................................................................................................................80
6.4.5 Remove the back pull-out assembly ............................................................................................. 80
6.4.6 Remove the coupling hub .............................................................................................................82
6.4.7 Impeller removal............................................................................................................................83
6.4.8 Shaft guard removal (if provided).................................................................................................. 84
Table of Contents
2 Model NM 3196 i-FRAME Installation, Operation, and Maintenance Manual