DSM.0008 Ver 1.0
FCCC MT-45 / MT 55 CNG Diagnostics Service Manual
February 15, 2022
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FCCC MT CNG
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FCCC MT CNG
DSM.0008 Ver 1.0
FCCC MT-45 / MT 55 CNG Diagnostics Service Manual
February 24, 2022
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5
Safety
FCCC MT CNG
Hexagon Agility
®
provides safety guidelines to ensure the safety of personnel servicing and / or operating
compressed natural gas (CNG) equipment. All personnel involved must adhere to the standards provided,
specialized training, along with federal, state, and municipal laws and regulations.
CNG presents unique characteristics that are distinctive from gasoline and diesel fuel. CNG when stored at ambient
temperature and 3600 psi
(250 Bar)
is in a gaseous state.
CNG vehicles are equipped with temperature activated pressure relief devices (PRDs) to evacuate stored fuel
safely in the event of a thermal event. PRDs trigger when cylinder(s) surroundings or internal enclosure
temperatures exceed 220
°
F (110
°
C) and use vent lines with dedicated exits to evacuate the pressurized gas. The
vent tube design allows for controlled evacuation/flaring under certain environmental conditions.
Hexagon Agility
®
minimizes these potential hazards through state-of-the art design and testing practices. Always
observe the procedures and recommendations of this manual.
Warning and Signal Words Used in this Manual
Symbol
Definition
DANGER indicates a hazardous situation which, if not avoided, will result in death
or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION indicates a hazardous situation which, if not avoided, could result in
minor or moderate injury.
NOTICE is used to address practices not related to physical injury, such as best
practices
or tips to help an operation or procedure go smoothly and prevent equipment
damage.
SAFETY INSTRUCTIONS indicate specific safety-related instructions or
procedures.
CRITICAL CHARACTERISTIC − Product feature directly affects:
Safety of vehicle users, people nearby and maintenance personnel, or
Regulatory compliance.
MANUFACTURING CHARACTERISTIC −
A product feature solely used to improve manufacturability or maintain process
control.
A process parameter or Step that has a significant effect on achieving a Critical
Characteristic or Significant Characteristic or maintaining material identification/
traceability.
