Benchmark BG4500i, Manual

Page: 41 / 110

37
7.10 EMISSION CONTROL SYSTEM
Emission Source
Exhaust gas contains carbon monoxide, nitrogen oxides (NOx) and hydrocarbons.
It is very important to control the emissions of NOx and hydrocarbons as they
are a major contributor to air pollution. Carbon monoxide is a poisonous gas. The
emission of fuel vapors is a source of pollution as well. The generator engine utilizes
a precise air-fuel ratio and emission control system to reduce the emissions of
carbon monoxide, NOx, hydrocarbons and evaporative fuel emissions.
Regulation
Your engine has been designed to meet current Environmental Protection Agency
(EPA) and the California Air Resource Board (CARB) clean air standards. The
regulations dictate that the manufacturer provides operation and maintenance
standards regarding the emission control systems. Tune up specifications are
provided in the Specifications section and a description of the emission control
system may be found in the appendix to this manual. Adherence to the following
instruction will ensure your engine meets the emission control standards.
Modification
Modification of the emission control system may lead to increased emissions.
Modification is defined as the following:
Disassembling or modifying the function or parts of the intake, fuel or
exhaust system.
Modifying or destroying the speed governing function of the generator.
Engine faults that may affect emission
Any of the following faults must be repaired immediately. Consult with your
authorized service centre for diagnosis and repair:
Hard starting or shut down after starting.
Unstable idle speed.
Shut down or backfire after applying an electrical load.
Backfire or after fire.
Black smoke and/or excessive fuel consumption.
BG4500i