©2008 Ingersoll Rand Company Page 18
Options
Low Ambient
[Std] – The low ambient kit is
designed to protect the compressor when
starting in temperatures below 2°C (35°F). The
temperature is measured at the airend
discharge. The temperature is read using the
standard airend temperature sensor. When the
low ambient option is installed and selected if
the airend discharge sensor measures a
temperature below 2°C (35°F), the compressor
will start when commanded however it will delay
the load for a period defined by the Low Ambient
Delay Time. This will allow the coolant
temperature to rise above an allowable level
before loading the compressor in cold
environments. If the low ambient option is not
installed the machine will not start if the airend
temperature is below 2°C (35°F). The machine
will trip on a low ambient fault. This trip will be
logged in the fault table. The user can restart the
compressor by holding the start button in for 10
seconds. Each time the compressor faults on
low ambient the customer will have to restart the
compressor manually and the trip will be
recorded in the fault table.
Power Out Restart [Std] – At loss of power to
the compressor a software flag is set indicating
the operational status of the compressor. Once
power is returned the flag is evaluated and the
compressor is returned to its previous
operational state. PORO when activated will
work in all Local and Remote control modes. For