22
INDEX
1 BLOWER CHARACTERISTICS ............................................................................................... 22
1.1 Operating principle .............................................................................................................. 22
1.2 Construction ........................................................................................................................ 22
1.3 Nameplate ........................................................................................................................... 22
2 PERFORMANCE LIMITS AND WORKING CONDITIONS ..................................................... 23
2.1 Operating environment and conveyed gas .......................................................................... 23
2.2 Performance limits .............................................................................................................. 23
2.3 Flow adjustment .................................................................................................................. 23
2.4 Noise level ........................................................................................................................... 23
2.5 Forbidden uses.................................................................................................................... 24
2.6 Residual risks ...................................................................................................................... 24
3 STORAGE ................................................................................................................................ 25
3.1 Unpacking ........................................................................................................................... 25
3.2 Handling .............................................................................................................................. 25
3.3 Preservation ........................................................................................................................ 25
4 INSTALLATION ........................................................................................................................ 26
4.1 On-site positioning of blower ............................................................................................... 26
4.2 Changing the inlet/outlet arrangement ................................................................................ 26
4.3 Direction of rotation – Gas flow direction ............................................................................ 26
4.4 Coupling .............................................................................................................................. 27
4.4.1 Direct coupling ............................................................................................................ 27
4.4.2 Belt drive coupling ...................................................................................................... 28
4.5 System piping ...................................................................................................................... 29
4.5.1 Vacuum operation ...................................................................................................... 29
4.5.2 Pressure operation ..................................................................................................... 29
4.5.3 Pressure / Vacuum operation ..................................................................................... 29
4.6 Cooling circuit (only for /RV) ................................................................................................ 30
4.7 Electric connection .............................................................................................................. 30
5 OPERATION ............................................................................................................................. 31
5.1 Preliminary controls ............................................................................................................. 31
5.2 First start up ........................................................................................................................ 31
5.3 Operation ............................................................................................................................. 31
5.4 Stopping the blower ............................................................................................................. 31
6 MAINTENANCE ....................................................................................................................... 32
6.1 Oil change ........................................................................................................................... 32
6.1.1 Oil type and viscosity .................................................................................................. 32
6.1.2 Recommended mineral oils ........................................................................................ 32
6.2 Replacing the shaft seal ...................................................................................................... 33
6.3 Cleaning compression chamber.......................................................................................... 33
6.4 Check of the gear clearance ............................................................................................... 33
6.5 Check of the rotors clearance ............................................................................................. 33
6.6 Spare parts .......................................................................................................................... 34
6.7 Demolition of the blower ...................................................................................................... 34
7 TROUBLESHOOTING ............................................................................................................. 35
8 DISASSEMBLY AND REASSEMBLY ..................................................................................... 36
8.1 Disassembly ........................................................................................................................ 36
8.1.2 Disassembly of drive side sump ................................................................................. 36
8.1.3 Disassembly of gear side sump.................................................................................. 36
8.2 Reassembly ......................................................................................................................... 36
8.2.1 Reassembly of drive side sump .................................................................................. 36
8.2.2 Reassembly of gear side sump .................................................................................. 36
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