Adjust the SPR valve in compartment 2 until the suction pressure reading on the road compressor port matches the recommended value for the application. Leave the unit running for 10-
15 min to check that the pressure reading is stable.
6. Activate compartment 1 again and check that the suction pressure reading on the road compressor port remains stable as set during 5-10 min.
7. Stop unit and disconnect pressure gauges.
WARNING: the connector of the fan that is next to the KVL must be disconnected while this operation is being carried out.