Record keeping of maintenance tasks such as, oven calibration, filter changes, motor repair or replacement, and oven adjustments should always be logged in a maintenance book. This maintenance log book will allow the systems manager to spot trends and help to insure that the system is being closely watched for changes that will effect productivity and quality. I like to see an oven that has a temperature recording device attached to it as an option. In fact, I have had customers request proof of the oven temperature during the run of their parts. Contact your oven manufacturer and ask about the options available.
Ovens require little maintenance as compared to the pretreatment system for example.
However, all equipment should be maintained on a regular basis to prevent devastating unplanned down time. Schedule clean up and inspection time for ovens as with all equipment to insure that they are operating at peak efficiencies. Calibration and temperature testing should be done on a regular basis by your equipment supplier to insure that all is well. Like a physical examination by a doctor sometimes we need a second opinion regarding the health and condition of our system. The above can be used as a check list for developing a regular maintenance inspection on your heating system.