Test the System Daily
Notice: Daimler Truck North America (DTNA) strongly recommends that all operators follow California Code of Regulations (CCR) inspection requirements, regardless of where the vehicle is operated. Per Title 13 CCR § 935 (2), gas detection systems should be tested three times per calendar year at equal intervals. The testing procedure should simulate the same operating environment in which the vehicle is used.
Test results validating the performance of the gas detection system within the parameters established by the component manufacturer and NFPA 52 should be maintained as a permanent part of the vehicle service records. Use of alcohol, propane, and other harsh liquids or gases are not acceptable methods for testing.
Press the 'Test' button on the control panel daily.
The system will proceed with a self-diagnostic test that will include illumination of the 'Trace Gas,' 'Significant,' and all other sensor LEDs. It will also sound the piezo buzzer. Listen to verify the buzzer alarm goes off and watch to see that all lights illuminate or flash.
Test the sensors three times per calender year, after any system component has been replaced, and if the vehicle was involved in an accident or fire.
The gas detection system sensors must be tested regularly by a trained technician, using certified test equipment that satisfies CCR § 935 (2) or NFPA 52 regulations.
DTNA recommends the highest level of safety validation if there are multiple validation requirements in the state or locality where the vehicle is operated or domiciled.