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Contents
A705-74-880 Issue K
Contents
Section Page
1 INTRODUCTION .................................................................................... 1
1.1 Scope and definitions ................................................................................................... 1
1.2 General description ..................................................................................................... 2
1.3 Gas system ................................................................................................................ 4
1.4 Cooling system ........................................................................................................... 4
1.4.1 Warning Switch ........................................................................................................... 4
1.4.2 Shut Down Switch ........................................................................................................ 4
1.5 Inter-stage pressure relief valve (PRV) ............................................................................... 4
1.6 Drive operation ........................................................................................................... 5
1.7 Liquid pumping capability .............................................................................................. 5
1.8 Safe area operation ..................................................................................................... 5
1.9 Accessories ................................................................................................................ 5
2 TECHNICAL DATA ................................................................................. 7
2.1 General .................................................................................................................... 7
2.2 Services ....................................................................................................................7
2.3 Cooling system ........................................................................................................... 8
2.4 Lubrication system .....................................................................................................10
2.4.1 Gearbox ..................................................................................................................10
2.4.2 High vacuum bearings ..................................................................................................10
2.5 Area classification in accordance with BS 5345 ....................................................................10
2.6 Materials of Construction ..............................................................................................11
3 INSTALLATION ................................................................................... 13
3.1 Safety .....................................................................................................................13
3.2 Unpack and inspect .....................................................................................................13
3.3 Locate the GV Pump ....................................................................................................14
3.4 Check the gearbox oil-level ...........................................................................................14
3.5 Check the high vacuum bearing oil-level ...........................................................................15
3.6 Electrical connections ..................................................................................................15
3.6.1 Introduction .............................................................................................................15
3.6.2 Connect the electrical supply to the pump-motor (380 - 415 V, 50 Hz electrical supplies) ................17
3.6.3 Connect the electrical supply to the pump-motor (230/460 V, 60 Hz electrical supplies) ..................18
3.6.4 Connect to the thermal snap-switches ..............................................................................20
3.7 Check the direction of pump rotation ...............................................................................21
3.8 Fit a mechanical booster pump (optional) ..........................................................................22
3.9 Connect the cooling-water supply ...................................................................................22
3.10 Connect the shaft-seals purge and gas-ballast gas supplies ......................................................23
3.10.1 Introduction .............................................................................................................23
3.10.2 Connect the shaft-seals purge air or nitrogen supply .............................................................24
3.10.3 Connect a nitrogen gas-ballast supply (optional) .................................................................. 24
3.11 Connect the pump-inlet and pump-outlet ..........................................................................26
3.11.1 Connect the pump to your process system .........................................................................26
3.11.2 Connect the pump-outlet ..............................................................................................27
3.11.3 External Evacuation of High Vacuum Bearing Oil Box .............................................................27
3.12 Leak test the installation ..............................................................................................27
3.13 Commission the pump ..................................................................................................28
4 OPERATION ...................................................................................... 29
4.1 Start the pump ..........................................................................................................29
4.2 Pump warm up ..........................................................................................................29
cg/6031/01/09
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