55
T51002 E
InstallatIon, servIce and troubleshootIng Procedures
APPENDIX A: GlOSSARy
The following terms are relative to TIREMAAX
®
PRO
and CP systems and applied in this document:
Crack pressure
A characteristic of the spring-loaded check valves in
tire hoses. The spring tension determines the pressure
differential required to open the valve.
Delivery pressure
Output pressure from controller that is regulated and
delivered to tires.
Emergency close pressure
A minimum pressure that tires will deflate to in the
event of a catastrophic leak in the system.
IPCU
(Integrated Pressure Control Unit)
The IPCU is set with the target tire pressure and directs
the system to supply air to the tires when needed.
A significant amount of system air flow causes the
trailer-mounted indicator lamp to illuminate.
OE or OEM
Original Equipment Manufacturer
PRM
(Pressure Relief Module)
A unit in a TIREMAAX PRO controller that allows tire
deflation.
Rotary union
Rotary air seal assembly that allows air transfer from
wheel end to tire(s) while vehicle is in motion. The
rotary joint is always pressurized when the supply
valve is open.
Target pressures
The desired tire pressure, inflation or deflation.
TIS
(Tire Inflation Systems)
A system that maintains the pressure of selected tires
and activates a warning to alert the vehicle operator if
there is a system or tire leak.
