Johnson Pump TG GS2-25 - Page 4

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A.0500.501 – IM-TGGS/05.01 EN (03/2013)
3.17 Safety relief valve ............................................................................................. 23
3.17.1 Pressure .............................................................................................................24
3.17.2 Heating .............................................................................................................. 24
3.17.3 Safety relief valve – Relative adjustment ................................................... 24
3.17.4 Sectional drawings and part lists ................................................................ 26
3.17.4.1 Single safety relief valve ........................................................................... 26
3.17.4.2 Heated spring casing ................................................................................27
3.17.4.3 Double safety relief valve .......................................................................... 27
3.18 Installation .......................................................................................................... 28
3.18.1 General .............................................................................................................28
3.18.2 Location ............................................................................................................28
3.18.2.1 Short suction line ....................................................................................... 28
3.18.2.2 Accessibility ................................................................................................28
3.18.2.3 Outdoor installation ................................................................................... 28
3.18.2.4 Indoor installation ....................................................................................... 29
3.18.2.5 Stability ......................................................................................................... 29
3.18.3 Drives .................................................................................................................29
3.18.3.1 Starting torque ............................................................................................ 29
3.18.3.2 Radial load on shaft end ...........................................................................30
3.18.4 Shaft rotation ...................................................................................................30
3.18.5 Double safety relief valve ..............................................................................31
3.18.6 Suction and discharge pipes .......................................................................31
3.18.6.1 Forces and moments .................................................................................31
3.18.6.2 Piping ............................................................................................................32
3.18.6.3 Isolating valves ............................................................................................33
3.18.6.4 Strainer ......................................................................................................... 33
3.18.7 Secondary piping ............................................................................................33
3.18.7.1 Drain lines .................................................................................................... 33
3.18.7.2 Heating jackets ..........................................................................................34
3.18.8 Flush/quench media ....................................................................................... 34
3.18.9 Guidelines for assembly ................................................................................ 35
3.18.9.1 Transport of pump unit ..............................................................................35
3.18.9.2 Foundation pump unit ...............................................................................35
3.18.9.3 Variators, Gear box, Gear motors, Motors............................................35
3.18.9.4 Electric motor drive ....................................................................................35
3.18.9.5 Combustion engines ................................................................................. 36
3.18.9.6 Shaft coupling .............................................................................................36
3.18.9.7 Guarding of moving parts ........................................................................36
3.19 Instructions for start-up .................................................................................. 37
3.19.1 General .............................................................................................................37
3.19.2 Cleaning the pump .........................................................................................37
3.19.2.1 Cleaning suction line .................................................................................37
3.19.3 Venting and filling ............................................................................................37
3.19.4 Checklist – Initial start-up ............................................................................38
3.19.5 Start-up ............................................................................................................. 39
3.19.6 Shut-down ........................................................................................................39
3.19.7 Abnormal operation ........................................................................................ 39
3.20 Trouble shooting ............................................................................................... 40
3.20.1 Instructions for re-using and disposal .......................................................42
3.20.1.1 Re-use .......................................................................................................... 42
3.20.1.2 Disposal ....................................................................................................... 42