I. INTRODUCTION
The DORAN 360OTR is a real-time, wireless, electronic tire pressure monitoring system
designed for heavy duty trucks. The DORAN 360OTR can monitor pressures from 10 to 188 psi
and is capable of displaying current tire pressures, whether the vehicle is moving or stationary.
Although the 360OTR will not prevent tires from losing pressure or failing, low pressure is the
leading cause of premature tire failure. Additionally, the DORAN 360OTR has a built in high
temperature alarm, activated at 175°F, that can provide excessive heat warnings which can
identify other potential wheel problems. The 360OTR can be used on all pneumatic tires and can
provide an early notification of potential problems and assist with proper tire pressurization
maintenance.
The DORAN 360OTR System consists of two basic components: Valve Stem Tire Sensors and
a Monitor. The wireless sensors transmit coded RF signals to the monitor.
The monitor will then interpret the data, display current tire pressure readings, and alert the driver
with audible and visual feedback if there is a pressure drop or excessive heat. The system will
provide pressure alerts at 2 levels: 12.5% below baseline pressure and greater than 25% below
baseline pressure. The high temperature alarm is activated at temperatures of 175°F and above.
When used properly, the DORAN 360OTR will inform the driver of tire pressure or temperature
issues so the operator has the opportunity to make necessary adjustments before a serious
problem occurs.
Tires and valve stems should be inspected thoroughly prior to installation of the DORAN
360OTR System to ensure that they are in good condition. It is not uncommon to find valve stems
that need replacing or low tire inflation when installing the DORAN 360OTR system. DORAN
recommends that rubber valve stems be replaced with brass or stainless steel stems as some
rubber stems have been found to be inferior and can cause premature failure.
Regular tire and valve stem visual inspections are recommended. A damaged sensor, tire,
or valve stem can cause pressure loss. Inspect regularly. If faults are repeatedly observed,
discontinue use of the system and contact DORAN Mfg. Toll Free 1-866-816-7233.
The
360OTR
cannot prevent tire/wheel overload. Overloading any tire is extremely
dangerous and can cause the failure of any suspension component, not just tires! The only way
to detect overloading is to weigh the vehicle. A vehicle should never be operated if the weight
on any wheel is greater than the design specification. Even a correctly inflated tire can fail if
overloaded.
Tires can fail for other reasons besides low pressure or overloading. Stay alert and watch
for other tire problems that may be indicated by unusual noises, vibrations, uneven tread wear,
or bulges on the tire. If any of these symptoms occur, have the tires checked immediately by a
professional!
