■ Pressure relief valve:
The pressure relief valve protects the system against excessive pressure. It is factory set.
■ Resistance thermometer:
Monitoring the airend discharge temperature protects the compressed air system from imper‐
missible temperature rises.
■ Housing and covers for moving parts and electrical connections:
Protect against accidental contact.
4.2.2 Floating relay contacts
Floating relay contacts are provided for the transfer of signals, messages.
Information on location, loading capacity and type of message or signal is found in the electrical
diagram.
If the floating relay contacts are connected to an external voltage source, voltage may be
present even when the machine is isolated from the power supply.
4.3 Operating panel SIGMA CONTROL 2
Keys
Fig. 5 Keys – overview
Position Name
Function
1
«OFF»
Switches the machine off.
2
«ON»
Switch on the machine.
3
«Cancel»
Returns to the next higher menu option level.
Exits the edit mode without saving.
4
«Accept»
Jumps to the selected menu option.
Exits the edit mode and saves.
4
Design and Function
4.3
Operating panel SIGMA CONTROL 2
901824 12 E
Operating Manual Screw Compressor
ASK
31
Summary of Contents for ASK 28
Page 2: ...Original instructions KKW SASK 2 22 en SBA SCHRAUBEN SC2IO KKW SSC 2 08 20170919 084918...
Page 6: ...Contents iv Operating Manual Screw Compressor ASK 901824 12 E...
Page 8: ...List of Illustrations vi Operating Manual Screw Compressor ASK 901824 12 E...
Page 138: ...13 Annex 13 4 Electrical Diagram 128 Operating Manual Screw Compressor ASK 901824 12 E...
