4.2.2 Floating relay contacts ........................................................................................ 31
4.3 Operating panel SIGMA CONTROL 2 ............................................................................. 31
4.4 Operating modes and control modes ............................................................................... 34
4.4.1 Machine operating modes .................................................................................. 34
4.4.2 Control modes .................................................................................................... 34
4.5 Options ............................................................................................................................. 36
4.5.1 SIGMA CONTROL 2 controller: Connection to control technology .................... 36
4.5.2 Machine mountings ............................................................................................. 36
4.5.3 Heat recovery ..................................................................................................... 36
5 Installation and Operating Conditions
5.1 Ensuring safety ................................................................................................................ 38
5.2 Installation conditions ....................................................................................................... 38
5.2.1 Determining location and clearances .................................................................. 38
5.2.2 Ensuring the machine room ventilation ............................................................... 39
5.2.3 Exhaust duct design ........................................................................................... 40
5.3 Operating the machine in a compressed air network ....................................................... 40
6 Installation
6.1 Ensuring safety ................................................................................................................ 41
6.2 Reporting Transport Damage ........................................................................................... 42
6.3 Connecting the machine with the compressed air network .............................................. 42
6.4 Connecting the external pressure transducer .................................................................. 42
6.5 Connecting the machine with the power supply ............................................................... 43
6.6 Options ............................................................................................................................. 44
6.6.1 Anchoring the machine ....................................................................................... 44
6.6.2 Connecting the heat recovery system ................................................................ 44
7 Initial Start-up
7.1 Ensuring safety ................................................................................................................ 46
7.2 Instructions to be observed before commissioning .......................................................... 47
7.3 Checking installation and operating conditions ................................................................ 47
7.4 Setting the overload protection cut-out ............................................................................ 48
7.5 Setting the motor overload protection switch ................................................................... 48
7.6 Pouring cooling oil into the airend .................................................................................... 48
7.7 Activating and deactivating the MODULATING control .................................................... 49
7.8 Starting the machine for the first time .............................................................................. 50
7.9 Setting the set point pressure .......................................................................................... 51
7.10 Setting the display language ............................................................................................ 51
8 Operation
8.1 Switching on and off ......................................................................................................... 52
8.1.1 Switching on ....................................................................................................... 52
8.1.2 Switching off ....................................................................................................... 52
8.2 Switching off in an emergency and switching on again .................................................... 53
8.3 Using the remote control for switching on and off ............................................................ 53
8.4 Using the timer for switching on and off ........................................................................... 54
8.5 Interpreting operation messages ...................................................................................... 55
8.6 Acknowledging alarm and warning messages ................................................................. 55
9 Fault Recognition and Rectification
9.1 Basic instructions ............................................................................................................. 57
9.2 Other faults ....................................................................................................................... 57
10 Maintenance
10.1 Ensuring safety ................................................................................................................ 59
10.2 Following the maintenance plan ....................................................................................... 60
Contents
ii
Operating Manual Screw Compressor
ASK 901824 12 E
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