Doran 360HD - Introduction

I. INTRODUCTION
The DORAN 360HD is a full-time wireless electronic tire pressure monitoring system designed
for heavy duty trucks to monitor and display tire pressures from 10 psi up to 188 psi. It is capable
of displaying current tire pressure on demand, whether moving or stationary. The
360HD is a
monitoring system and will not prevent tires from losing pressure or failing. However, low
pressure is the leading cause of premature tire failure and the
360HD can provide early notice
of potential problems and assist in maintaining proper pressurization in vehicle tires. The
360HD can be used on all pneumatic tires.
The 360HD consists of two basic components: tire sensors which screw onto the valve stems
of tires, and a monitor. Sensors transmit a coded RF signal and alert if pressure drops. The
monitor displays each tire’s pressure and an audible alert if tire pressures drop. During an alert,
the low pressure tire location is displayed on the monitor, the monitor will display “LOW
PRESSURE”, the current pressure reading for that tire flashes, and an audible alert sounds. The
system can alert at 2 levels: The first alert occurs when pressures drop more than 12.5%. A
second more urgent alert occurs if tire pressures drop more than 25%. As with many RF
products, signal interruption can occur and prevent a signal to reach the monitor. When used
properly, the DORAN
360HD will inform the driver of the tire pressures on the vehicle so the
operator has the opportunity to make any necessary adjustments to the air pressure before a
serious problem occurs.
Tires and valve stems should be inspected thoroughly prior to installation of the system to
ensure they are in good condition and inflated properly. It is not uncommon to find valve stems
that need replacing when installing the 360HD system. DORAN recommends that rubber valve
stems be replaced with brass or stainless steel stems. Some rubber stems have been found to
be inferior and could fail prematurely.
A visual inspection of tires on a regular basis is recommended. The
360HD does not
prevent low tire pressure, it alerts when tire pressures are low, allowing action to be taken.
A damaged Sensor or valve stem can cause pressure loss. Inspect regularly. If repeated
faults are observed, discontinue use of the system and contact DORAN Mfg. Toll Free 1-
866-816-7233.
The 360HD 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. Always be on the alert
for any other tire problems as indicated by unusual noises, vibrations, uneven tread wear, or