Vehicles that normally get the ASM test should not be given an idle test unless a determination is made that the vehicle cannot be safely tested on a dynamometer. Please check the expiration date on the bottled gas you are purchasing to make sure that you are getting your money's worth from your investment. It is the station's responsibility to recognize specifically what each contract covers and negotiate them accordingly. Maintenance agreements are for keeping your equipment in good working order and minimizing downtime due to breakdowns. Maintenance should likely cover cleaning, lubrication, and some filter replacement, as well as evaluation of your equipment to determine needed consumable items and possible defects.
Service contracts are for repairing or replacing something that is broken.
These essentially are warranties for your equipment. An example of service covered by this type of agreement would be the replacement of your analyzer bench, if it failed. The equipment manufacturers agree that there needs to be a consistent and clear definition of service and maintenance contracts and are currently working with the Pennsylvania Emissions Team, members of the industry and PennDOT to clarify this issue. Attempting to do so will result in serious transmission damage. It may also result in uncontrolled vehicle movement and may cause an accident or injuries to person nearby.