Contents
4 of 96
Sewatec
5.14 Priming and venting the pump .....................................................................................................................36
5.15 Protective devices ...........................................................................................................................................36
5.16 Connecting the vibration sensor ...................................................................................................................36
5.17 Connecting temperature measuring devices................................................................................................36
5.18 Warning and cut-out values ..........................................................................................................................37
5.19 Connecting a leakage monitor......................................................................................................................37
6 Commissioning/Start-up/Shutdown................................................................................................... 39
6.1 Commissioning/Start-up.................................................................................................................................39
6.1.1 Prerequisites for commissioning/start-up .........................................................................................39
6.1.2 Start-up...............................................................................................................................................39
6.2 Operating limits..............................................................................................................................................40
6.2.1 Maximum operating pressure ...........................................................................................................40
6.2.2 Frequency of starts.............................................................................................................................42
6.2.3 Fluid handled .....................................................................................................................................42
6.3 Shutdown/storage/preservation ....................................................................................................................42
6.3.1 Shutdown ...........................................................................................................................................43
6.4 Returning to service .......................................................................................................................................43
7 Servicing/Maintenance........................................................................................................................ 44
7.1 Safety regulations...........................................................................................................................................44
7.2 Servicing/inspection........................................................................................................................................45
7.2.1 Supervision of operation ...................................................................................................................45
7.2.2 Visual inspection through the inspection hole ................................................................................46
7.2.3 Lubrication and lubricant change.....................................................................................................47
7.3 Drainage/cleaning ..........................................................................................................................................51
7.4 Dismantling the pump set..............................................................................................................................51
7.4.1 General information/Safety regulations...........................................................................................51
7.4.2 Preparations for dismantling ............................................................................................................52
7.4.3 Separating the pump from the piping .............................................................................................52
7.4.4 Removing the belt drive ....................................................................................................................53
7.4.5 Removing the back pull-out unit ......................................................................................................56
7.4.6 Removing the impeller ......................................................................................................................57
7.4.7 Dismantling the mechanical seal ......................................................................................................60
7.4.8 Dismantling the gland packing.........................................................................................................61
7.4.9 Removing shaft and rolling element bearings.................................................................................62
7.4.10 Removing the wear plate (for D type impellers only) .....................................................................63
7.5 Reassembling the pump set...........................................................................................................................63
7.5.1 General information/Safety regulations...........................................................................................63
7.5.2 Installing the shaft and rolling element bearings ...........................................................................64
7.5.3 Preparing and reassembling the bearing brackets ..........................................................................65
7.5.4 Installing the mechanical seal ...........................................................................................................66
7.5.5 Fitting the gland packing ..................................................................................................................68
7.5.6 Fitting the impeller ............................................................................................................................68
7.5.7 Installing the back pull-out unit .......................................................................................................70
7.5.8 Leak test ............................................................................................................................................71
7.5.9 Mounting the motor..........................................................................................................................72
7.5.10 Fitting the belt drive..........................................................................................................................73
7.6 Tightening torques.........................................................................................................................................74
7.7 Spare parts stock.............................................................................................................................................74
7.7.1 Ordering spare parts..........................................................................................................................74
7.7.2 Recommended spare parts stock for 2 years' operation to DIN24296...........................................75
8 Trouble-shooting.................................................................................................................................. 76
9 Related Documents.............................................................................................................................. 78
9.1 Speed adjustment...........................................................................................................................................78
9.2 Mass moments of inertia................................................................................................................................80
9.3 General assembly drawings/exploded views with list of components ........................................................82
9.3.1 General assembly drawing – Sewatec with bearing brackets S05, S06, S07, S08...........................82
9.3.2 General assembly drawing – Sewatec with bearing brackets S05, S06, S07, S08, underfloor
installation, universal-joint shaft ......................................................................................................83
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