BUSCH COBRA NX 0950 A, Instruction Manual

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Table of Contents
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Table of Contents
1 Safety........................................................................................................................... 4
2 Product Description ..................................................................................................... 5
2.1 Operating Principle............................................................................................... 6
2.2 Application ........................................................................................................... 6
2.3 Start Controls ....................................................................................................... 6
2.4 Standard Features................................................................................................. 7
2.4.1 Water Cooling ...........................................................................................7
2.4.2 Temperature Switch...................................................................................7
2.4.3 Sealing Systems .........................................................................................7
2.5 Optional Accessories............................................................................................. 7
2.5.1 Gas Ballast Valve........................................................................................7
2.5.2 Silencer ......................................................................................................7
2.5.3 Barrier Gas System .....................................................................................7
2.5.4 Inlet Filter ..................................................................................................8
2.5.5 Inlet Check Valve.......................................................................................8
3 Transport ..................................................................................................................... 9
4 Storage......................................................................................................................... 10
5 Installation................................................................................................................... 11
5.1 Installation Conditions .......................................................................................... 11
5.2 Connecting Lines / Pipes ...................................................................................... 11
5.2.1 Suction Connection....................................................................................12
5.2.2 Discharge Connection................................................................................12
5.2.3 Cooling Water Connection ........................................................................13
5.2.4 Barrier Gas System Connection (Optional) .................................................14
5.3 Filling Oil .............................................................................................................. 14
5.4 Electrical Connection ............................................................................................ 17
5.4.1 Electrical Connection of the Variable-Frequency Drive ...............................18
5.4.2 Wiring Diagram Variable-Frequency Drive .................................................19
5.4.3 Start / Stop Connection .............................................................................19
5.4.4 Wiring Diagram Three-Phase Motor (Pump Drive).....................................20
5.5 Electrical Connection of the Monitoring Devices ................................................... 21
5.5.1 Wiring Diagram Temperature Switch .........................................................21
6 Commissioning............................................................................................................ 21
7 Maintenance ................................................................................................................ 23
7.1 Maintenance Schedule.......................................................................................... 24
7.2 Oil Level Inspection .............................................................................................. 24
7.3 Cleaning the Inlet Screen ...................................................................................... 25
7.4 Cleaning the Gas Ballast Filter (Optional).............................................................. 25
7.5 Oil Change ........................................................................................................... 26
8 Overhaul...................................................................................................................... 29
9 Decommissioning ........................................................................................................ 29
9.1 Dismantling and Disposal...................................................................................... 29
10 Spare Parts ................................................................................................................... 30
11 Troubleshooting........................................................................................................... 30
12 Technical Data ............................................................................................................. 32
13 Oil ............................................................................................................................... 32