
4.6.1 General piping checklist ................................................................................................................44
4.6.2 Suction-piping checklist.................................................................................................................47
4.6.3 Discharge piping checklist.............................................................................................................49
5 Commissioning, Startup, Operation, and Shutdown ...................................................................................51
5.1 Preparation for startup............................................................................................................................. 51
5.2 Remove the coupling guard .................................................................................................................... 52
5.3 Check the rotation ...................................................................................................................................54
5.4 Impeller-clearance check ........................................................................................................................ 54
5.4.1 Impeller clearances .......................................................................................................................55
5.5 Impeller-clearance setting .......................................................................................................................55
5.5.1 Set the impeller clearance - dial indicator method (all except CV 3196, CV 3198, and LF 3196
size 1x1.5-4) ...................................................................................................................................56
5.5.2 Set the impeller clearance - feeler gauge method (all except CV 3196, CV3198 and LF 3196 size
1x1.5-4)............................................................................................................................................57
5.6 Couple the pump and driver .................................................................................................................... 58
5.6.1 Install the coupling guard .............................................................................................................. 59
5.6.2 Bearing lubrication ........................................................................................................................64
5.7 Shaft-sealing options...............................................................................................................................66
5.7.1 Mechanical seal options................................................................................................................ 66
5.7.2 Connection of sealing liquid for mechanical seals ........................................................................66
5.7.3 Packed stuffing box option ............................................................................................................66
5.7.4 Connection of sealing liquid for a packed stuffing box ..................................................................67
5.8 Install the shaft guard - if provided ..........................................................................................................67
5.9 Pump priming ..........................................................................................................................................68
5.9.1 Pump priming with the suction supply below the pump (3796) .....................................................68
5.10 Start the pump.......................................................................................................................................68
5.11 i-ALERT® Equipment Health Monitor....................................................................................................69
5.12 Pump operation precautions ................................................................................................................. 69
5.13 Shut down the pump ............................................................................................................................. 70
5.14 Deactivate the i-ALERT® Equipment Health Monitor............................................................................71
5.15 Reset the i-ALERT® Health Monitor .....................................................................................................71
5.16 Make the final alignment of the pump and driver .................................................................................. 71
6 Maintenance..................................................................................................................................................... 73
6.1 Maintenance schedule ............................................................................................................................ 73
6.2 Bearing maintenance .............................................................................................................................. 74
6.2.1 Lubricating-oil requirements.......................................................................................................... 74
6.2.2 Regrease the grease-lubricated bearings .....................................................................................75
6.2.3 Lubricate the bearings after a shutdown period ............................................................................76
6.3 Shaft seal maintenance...........................................................................................................................77
6.3.1 Mechanical-seal maintenance.......................................................................................................77
6.3.2 Packed stuffing-box maintenance .................................................................................................77
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 ....................................................................................................................79
6.4.5 Remove the back pull-out assembly ............................................................................................. 80
6.4.6 Remove the coupling hub .............................................................................................................82
6.4.7 Impeller removal............................................................................................................................83
Table of Contents
2 Model 3796 i-FRAME Installation, Operation, and Maintenance Manual