4 Design and Function
4.1 Enclosure ......................................................................................................................... 25
4.2 Functional Description of the Machine ............................................................................. 25
4.3 Floating relay contacts ..................................................................................................... 26
4.4 Options ............................................................................................................................. 27
4.4.1 Machine mountings ............................................................................................. 27
4.4.2 Cooling air filter mat ............................................................................................ 27
4.4.3 Water-cooling ...................................................................................................... 27
4.4.4 Heat recovery ..................................................................................................... 28
4.5 Operating modes and control modes ............................................................................... 29
4.5.1 Operating modes ................................................................................................ 29
4.5.2 Control modes .................................................................................................... 29
4.6 Safety Devices ................................................................................................................. 31
4.7 SIGMA CONTROL Keys and Indicators .......................................................................... 31
5 Installation and Operating Conditions
5.1 Safety ............................................................................................................................... 34
5.2 Installation conditions ....................................................................................................... 34
5.2.1 Determining location and clearances .................................................................. 34
5.2.2 Ensure adequate ventilation. .............................................................................. 35
5.2.3 Exhaust duct design ........................................................................................... 35
5.3 Using the Compressor to Supply A Compressed Air System. ......................................... 36
6 Installation
6.1 Safety ............................................................................................................................... 37
6.2 Reporting Transport Damage ........................................................................................... 37
6.3 Making the Compressed Air Connection .......................................................................... 37
6.4 Making the Power Supply Connection ............................................................................. 38
6.5 Options ............................................................................................................................. 39
6.5.1 Anchoring the machine ....................................................................................... 39
6.5.2 Connecting the cooling water ............................................................................. 39
6.5.3 Connecting the heat recovery system ................................................................ 40
7 Initial Start-up
7.1 Safety ............................................................................................................................... 42
7.2 To be noted before commissioning .................................................................................. 42
7.3 Checking installation and operating conditions ................................................................ 43
7.4 Setting the overload protection cut-out ............................................................................ 44
7.5 Setting the motor overload protection switch ................................................................... 44
7.6 Filling cooling oil into the airend ....................................................................................... 44
7.7 Checking direction of rotation ........................................................................................... 45
7.8 Starting the machine for the first time .............................................................................. 46
7.9 Setting the Setpoint Pressure .......................................................................................... 46
7.10 Changing the display language ........................................................................................ 46
8 Operation
8.1 Switching On and Off ....................................................................................................... 48
8.1.1 Switching on ....................................................................................................... 48
8.1.2 Shutdown ............................................................................................................ 48
8.2 Switching Off in an Emergency and Switching On again ................................................. 49
8.3 Switching on and off from a remote control center ........................................................... 49
8.4 Switching on and off with the clock .................................................................................. 50
8.5 Acknowledging alarm and warning messages ................................................................. 51
9 Fault Recognition and Rectification
9.1 Basic Information ............................................................................................................. 53
9.2 Alarm messages (machine stop) ...................................................................................... 53
Contents
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Service Manual Screw Compressor
BSD 9_5708 08 USE