Sullair SN55 User Manual page 22

2: Description
Automatic operation
For applications with varied periods of time when there are no air
requirements, the controller's AUTOMATIC mode allows the
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SN55, SN55S, SN55V, SN75, SN75S, SN75V User Manual
02250247-571 R04
Subject to EAR, ECCN EAR99 and related export control restrictions.
compressor to shutdown (time delayed) when no compressed air
requirement is present and restart as compressed air is needed.