STEMCO Aeris - Manual (Page 39)

Aeris Installation and Service Manual
Page 39 of 42
System Installation Check – Aeris SmartSense System
• After the Aeris system is completely installed, but before the trailer is put back into service, all air system
connections need to be checked for leaks. Apply a soapy/water solution to all air connections. If bubbles
appear at any fitting or air connection, repair the connection.
Follow Instructions Below:

Make sure the petcock valve on the trailer air tank is closed.

Fill the trailer air system and set all tire pressures just below the target pressures.

Ensure the mini ball valve on the controller box is in the open position.

Verify the trailer is connected to 12-volt power source.

Verify the “Green” light on the circuit board in the control box is blinking. If after applying 12-volts you
don’t see a light blinking, disconnect the 12-volt power source and check all wire terminal connections
and connections to the 7 pin connector box correct. Light will be blinking “Red” if no pressure exists or
flow is passing through the meter.

Indicator light on trailer should come on and blink 3 times. If insufficient pressure exists in the system,
LCD will read “2” if all is well the lights will stop blinking and the LCD will read “0”, if low flow exists the
light on that channel will stay on constantly and if high flow exists the light will blink constantly.

If the indicator light remains on and the system continues attempting to inflate one or more tires to
the proper pressure but can’t due to the inability to maintain adequate pressure, the system has a leak
and must be repaired.

Verify the oil level in each wheel end is at the correct level.
Maintenance
Check Tire Pressure
• Although the Aeris tire inflation system is designed to detect and fill a tire that’s leaking during vehicle
operation, STEMCO recommends you inspect the tires for normal wear and damage at regular intervals
and check the tire pressure as follows.
• Remove the metal cap from the check port that is provided on each hose. See Figure 36