Summer plant shutdowns are a great time to perform semi-annual maintenance on your nitrogen generator. All systems should be visually checked to make sure they are operating as designed and meeting the required flow rate and purity. Filters and silencers should be changed at this time. If you have a PSA nitrogen generator it would be a good time to check the switching valves and replace them if needed (typically based on a set hour of operation). Be sure to verify the compressed air quality feeding your unit is dry and your air dryer is functioning as specified.