
Contents
4 of 70 EtachromL
5.6.2 Motors without adjusting screw .......................................................................................................31
5.7 Electrical connection ......................................................................................................................................32
5.7.1 Setting the time relay........................................................................................................................32
5.7.2 Earthing..............................................................................................................................................32
5.7.3 Connecting the motor .......................................................................................................................33
5.8 Checking the direction of rotation................................................................................................................33
6 Commissioning/Start-up/Shutdown................................................................................................... 34
6.1 Commissioning/Start-up.................................................................................................................................34
6.1.1 Prerequisites for commissioning/start-up .........................................................................................34
6.1.2 Filling in lubricants.............................................................................................................................34
6.1.3 Priming and venting the pump.........................................................................................................34
6.1.4 Final check..........................................................................................................................................35
6.1.5 Start-up...............................................................................................................................................35
6.1.6 Checking the shaft seal......................................................................................................................36
6.1.7 Shutdown ...........................................................................................................................................36
6.2 Operating limits..............................................................................................................................................37
6.2.1 Ambient temperature........................................................................................................................37
6.2.2 Frequency of starts.............................................................................................................................37
6.2.3 Fluid handled .....................................................................................................................................38
6.3 Shutdown/storage/preservation ....................................................................................................................39
6.3.1 Measures to be taken for shutdown ................................................................................................39
6.4 Returning to service .......................................................................................................................................39
7 Servicing/Maintenance........................................................................................................................ 41
7.1 Safety regulations...........................................................................................................................................41
7.2 Servicing/Inspection........................................................................................................................................42
7.2.1 Supervision of operation...................................................................................................................42
7.2.2 Inspection work..................................................................................................................................44
7.2.3 Lubrication and lubricant change of rolling element bearings ......................................................45
7.3 Drainage/cleaning ..........................................................................................................................................46
7.4 Dismantling the pump set..............................................................................................................................47
7.4.1 General information/Safety regulations...........................................................................................47
7.4.2 Preparing the pump set.....................................................................................................................48
7.4.3 Removing the motor..........................................................................................................................48
7.4.4 Removing the back pull-out unit ......................................................................................................48
7.4.5 Removing the impeller ......................................................................................................................48
7.4.6 Removing the mechanical seal..........................................................................................................49
7.4.7 Dismantling the bearings ..................................................................................................................49
7.5 Reassembling the pump set...........................................................................................................................49
7.5.1 General information/Safety regulations...........................................................................................49
7.5.2 Installing the bearing assembly ........................................................................................................50
7.5.3 Installing the mechanical seal ...........................................................................................................51
7.5.4 Fitting the impeller............................................................................................................................52
7.5.5 Installing the back pull-out unit .......................................................................................................52
7.5.6 Mounting the motor .........................................................................................................................52
7.6 Tightening torques.........................................................................................................................................53
7.6.1 Tightening torques for the pump.....................................................................................................53
7.6.2 Tightening torques for the pump set ...............................................................................................55
7.7 Spare parts stock.............................................................................................................................................56
7.7.1 Ordering spare parts..........................................................................................................................56
7.7.2 Recommended spare parts stock for 2 years' operation to DIN24296 ..........................................57
7.7.3 Interchangeability of EtachromL and EtachromB pump components .........................................58
8 Trouble-shooting.................................................................................................................................. 59
9 Related Documents.............................................................................................................................. 61
9.1 Exploded views with list of components.......................................................................................................61
9.1.1 Design for shaft unit 25.1..................................................................................................................61
9.1.2 Design for shaft unit 25.2..................................................................................................................62
9.1.3 Design for shaft unit 35.....................................................................................................................63