
Contents
4 of 94 Sewatec
5.10 Electrical connection ......................................................................................................................................34
5.11 Checking the direction of rotation................................................................................................................35
5.12 Priming and venting the pump .....................................................................................................................36
5.13 Protective devices ...........................................................................................................................................36
5.14 Connecting the vibration sensor ...................................................................................................................36
5.15 Connecting temperature measuring devices................................................................................................36
5.16 Warning and trip values.................................................................................................................................37
6 Commissioning/Start-up/Shutdown................................................................................................... 38
6.1 Commissioning/Start-up.................................................................................................................................38
6.1.1 Prerequisites for commissioning/start-up ........................................................................................ 38
6.1.2 Start-up.............................................................................................................................................. 38
6.1.3 Shutdown .......................................................................................................................................... 39
6.2 Operating limits..............................................................................................................................................39
6.2.1 Maximum operating pressure, maximum test pressure ................................................................. 40
6.2.2 Frequency of starts............................................................................................................................ 41
6.2.3 Fluid handled .................................................................................................................................... 41
6.2.3.1 Temperature of the fluid handled...........................................................................................41
6.2.3.2 Density of the fluid handled ....................................................................................................41
6.2.3.3 Abrasive fluids...........................................................................................................................42
6.3 Shutdown/storage/preservation ....................................................................................................................42
6.4 Returning to service .......................................................................................................................................42
7 Servicing/Maintenance........................................................................................................................ 44
7.1 Safety regulations...........................................................................................................................................44
7.2 Servicing/inspection........................................................................................................................................45
7.2.1 Supervision of operation .................................................................................................................. 45
7.2.2 Inspection work................................................................................................................................. 46
7.2.2.1 Visual inspection through the inspection hole .......................................................................46
7.2.3 Lubrication and lubricant change.................................................................................................... 47
7.2.3.1 Lubricating the rolling element bearings................................................................................47
7.2.3.2 Changing the lubricant of the mechanical seal ......................................................................47
7.2.3.3 Lubricant quantity ....................................................................................................................49
7.2.3.4 Lubricant quality .......................................................................................................................50
7.3 Drainage/cleaning ..........................................................................................................................................50
7.4 Dismantling the pump set..............................................................................................................................50
7.4.1 General information/Safety regulations.......................................................................................... 50
7.4.2 Preparations for dismantling ........................................................................................................... 51
7.4.3 Separating the pump from the piping ............................................................................................ 52
7.4.4 Removing the belt drive for installation type 3HZ ......................................................................... 52
7.4.4.1 Using taper clamping bushes ...................................................................................................53
7.4.4.2 Using pulleys to DIN 2211.........................................................................................................53
7.4.5 Removing the back pull-out unit ..................................................................................................... 54
7.4.6 Removing an impeller with tapered interference fit...................................................................... 54
7.4.7 Dismantling the mechanical seal ..................................................................................................... 56
7.4.7.1 Dismantling the pump-end mechanical seal ...........................................................................56
7.4.7.2 Dismantling the motor-end mechanical seal ..........................................................................56
7.4.7.3 Removing the C022/025/11-4STQ double cartridge seal.........................................................57
7.4.7.4 Removing the C033/055M1-4STQ double cartridge seal ........................................................57
7.4.8 Removing shaft and rolling element bearings................................................................................ 58
7.4.9 Removing the wear plate (for D impeller only) .............................................................................. 59
7.5 Reassembling the pump set...........................................................................................................................60
7.5.1 General information/Safety regulations.......................................................................................... 60
7.5.2 Re-installing the shaft and rolling element bearings ..................................................................... 60
7.5.3 Installing the mechanical seal .......................................................................................................... 61
7.5.3.1 Installing the bellows-type mechanical seal............................................................................62
7.5.3.2 Installing the C022/025M1-4STQ double cartridge seal..........................................................64
7.5.3.3 Installing the C033/055M1-4STQ double cartridge seal..........................................................66
7.5.4 Fitting the impeller ........................................................................................................................... 69
7.5.5 Installing the back pull-out unit....................................................................................................... 71