STEMCO Aeris - Manual (Page 6)

Aeris Installation and Service Manual
Page 6 of 42
System Overview
• The Aeris tire inflation system is designed to automatically inflate tires that are below the target pressure
setting. The system uses air from the trailer’s compressed air tank. The compressed air tank pressure
setting must be higher than the targeted tire pressure setting. Failure to have the air tank pressure above
the target tire pressure prevents proper operation of the inflation system.
System Features
• Tire pressure is continuously monitored and adjusted automatically to the target tire pressure.
• Adjustable air pressure regulator is used for setting desired tire pressure target.
• An indicator light will illuminate when air is flowing to the tires.
• Does not pressurize axle tube (prevent contamination of seals).
• Rotary seal air leakage will not enter the wheel end, preventing oil contamination on the hubcap.
• Each wheel end has dual venting paths to prevent wheel end pressurization.
• Checks tire pressure constantly.
• Integrated check valves in the hoses isolate tires from system if a tire is damaged or leaking.
• Tire pressure check ports are integrated into each hose, eliminating the need to remove the hose to check
the tire pressure.
• An air filter is provided on the inlet airline to prevent particulates from clogging the system.
Aeris Specifications
• Tire pressure setting range: 70-120 psi
• Pressure check interval: Continuously supplies air to tires
• System power requirements at 12VDC: < 12W.
• Minimum power voltage requirement to operate: 9 VDC
• Indicator light current range: 50 mA to 600 mA
• Tire inflation capacity (per tire): 10 psi in 2-3 minutes
• The indicator light provides the following system information:
• No light: System is good
• Power up: Light blinks three times
• No pressure: Long flash followed by 2 blinks repeating.
• Low volume flow: Constantly on
• High volume flow: Blinking constantly