Contents
4 of 76
CTN / CTN-H
6 Commissioning/Start-up/Shutdown................................................................................................... 27
6.1 Commissioning/Start-up.................................................................................................................................27
6.1.1 Prerequisites for commissioning/start-up .........................................................................................27
6.1.2 Filling in lubricants.............................................................................................................................27
6.1.3 Shaft seal ............................................................................................................................................28
6.1.4 Priming and venting the pump.........................................................................................................29
6.1.5 Final check..........................................................................................................................................29
6.1.6 Water cooling.....................................................................................................................................30
6.1.7 Cooling/heating the shaft seal..........................................................................................................30
6.1.8 Heating...............................................................................................................................................30
6.1.9 Heating up/keeping warm the pump (set).......................................................................................32
6.1.10 Start-up...............................................................................................................................................32
6.1.11 Checking the shaft seal......................................................................................................................33
6.1.12 Shutdown ...........................................................................................................................................33
6.2 Operating limits..............................................................................................................................................34
6.2.1 Ambient temperature........................................................................................................................34
6.2.2 Frequency of starts.............................................................................................................................35
6.2.3 Fluid handled .....................................................................................................................................35
6.3 Shutdown/storage/preservation ....................................................................................................................36
6.3.1 Measures to be taken for shutdown ................................................................................................36
6.4 Returning to service .......................................................................................................................................37
7 Servicing/Maintenance........................................................................................................................ 38
7.1 Safety regulations...........................................................................................................................................38
7.2 Servicing/Inspection........................................................................................................................................39
7.2.1 Supervision of operation...................................................................................................................39
7.2.2 Inspection work..................................................................................................................................40
7.2.3 Lubrication and lubricant change of thrust bearings (rolling element bearings) .........................41
7.2.4 Radial bearings...................................................................................................................................43
7.3 Drainage/cleaning ..........................................................................................................................................43
7.4 Dismantling the pump set..............................................................................................................................43
7.4.1 General information/Safety regulations...........................................................................................43
7.4.2 Preparing the pump set.....................................................................................................................44
7.4.3 Dismantling the motor ......................................................................................................................44
7.4.4 Dismantling the thrust bearings .......................................................................................................45
7.4.5 Removing the shaft seal ....................................................................................................................45
7.4.6 Dismantling the hydraulic system .....................................................................................................46
7.4.7 Removing the pipe assembly and shaft assembly............................................................................46
7.4.8 Dismantling the bearing sleeves.......................................................................................................47
7.4.9 Dismantling the bearing bush...........................................................................................................48
7.5 Reassembling the pump set...........................................................................................................................48
7.5.1 General information/Safety regulations...........................................................................................48
7.5.2 Fitting the bearing sleeve..................................................................................................................49
7.5.3 Assembling the pipe assembly and shaft assembly .........................................................................50
7.5.4 Reassembly of hydraulic system ........................................................................................................51
7.5.5 Fitting the shaft seal..........................................................................................................................52
7.5.6 Assembling thrust bearings...............................................................................................................55
7.5.7 Preloading the mechanical seal ........................................................................................................57
7.6 Tightening torques.........................................................................................................................................57
7.7 Spare parts stock.............................................................................................................................................57
7.7.1 Ordering spare parts..........................................................................................................................57
7.7.2 Recommended spare parts stock for 2 years' operation to DIN 24296 ..........................................58
7.7.3 Interchangeability of pump components.........................................................................................59
8 Trouble-shooting.................................................................................................................................. 60
9 Related Documents.............................................................................................................................. 62
9.1 General assembly drawing with list of components ....................................................................................62
9.1.1 CTN......................................................................................................................................................62
9.1.2 CTN-H..................................................................................................................................................65
9.1.3 CTN with oil-lubricated thrust bearings ...........................................................................................68
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