©2008 Ingersoll Rand Company Page 19
PORO to execute, the PORO option must be
installed and the PORO enable must be set to
ON in the factory set-up menu, the technician
than has visibility to turn PORO on or off and set
the time delay in the advanced menu. Once
activated if power is lost while the compressor is
running or stopped in auto start/stop, the
controller will store in memory the current
operating conditions. When power is restored to
the unit, the controller will first verify the PORO
option is installed, enabled, and turned ON.
Next, the controller will check to see if the unit
was running or stopped in auto start/stop when
the power was lost. If it is determined, this was
the case; it will start the PORO sequence. The
controller will energize the PORO horn and start
a count down on the display. The Red light will
flash indicating a Warning condition and the
horn will blow for the number of seconds the
operator has set in the PORO time set point. At
the end of the countdown, the horn will stop
blowing and the compressor will start. The
PORO timer can be stopped at anytime by
pressing the stop button on the user interface.
The controller will then power up normally in a
ready to start mode. If unit is being operated
using a remote control, the compressor will not
automatically restart after power returns if
PORO kit is not installed.
Scheduled Start/Stop [Enh] – This is an auto
stop/start mode of operation based on the Real
Time clock. A scheduled start time set point is
used to automatically start the compressor when
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