Table 5

Control of CO and NO2 emissions from the resurfacer37

*Guidelines that can be used for all toxic emissions from the resurfacer.
Regular testing of COThe rate of CO must be less than 0.5% for resurfacers driven by propane and exhaust pipes less than 1.0% for those driven by gasoline
Testing includes samples*;
    Idling test after 3 minutes
    High rate test after 5 minutes
The probable cause of an excessive quantity of CO;
    At idle, is a choke problem
    At a high rate, is an undersupply of air
Permanent installation of an apparatus to measure the concentration of gas*Capable of immediately detecting of all abnormal concentrations of toxic gas at the opening of the exhaust pipe
The installation of a warning light or of a buzzer on the instrument panel that will warn the employee of a malfunction
Regular maintenance of the motor*General inspection and tune up of the motor every 6 motor weeks or for every 50 hours of use
    Inspection of contaminant emission
    Carburettor adjustment
    Carburettor cleaning
    Inspection of the air filter
    Inspection of the throttle
Motor equipped with a catalytic purifierThe purifier can reduce the emissions of CO and non-burned hydrocarbons by up to 95%. The catalytic purifier functions adequately when it is heated up (5 to 7 minutes)
Operate with an optimal air/carbon mixtureEspecially for gas resurfacers.
A mixture too rich (reduction of air/carbon relation) produces an excessive quantity of NO2
Qualified personnel to operate the resurfacer*An experienced employee can reduce the working time of the surfacer to a minimumin
Frequency of resurfacing*Avoid if possible the surfacing between each period
Space out the use to 90 minutes instead of 60 minutes