ToxiRAE Pro User’s Guide214.2.1. Connecting The Calibration Adapter ............................................................ 4414.2.2. Disconnecting The Calibration Adapter ....................................................... 4414.3. Zero Calibration ........................................................................................... 4514.4. Span Calibration........................................................................................... 4614.4.1. Changing Span Gas Concentration ............................................................... 4715. Diagnostic Mode ......................................................................................................... 4815.1. Entering Diagnostic Mode ........................................................................... 4815.2. Navigating Diagnostic Mode ....................................................................... 4815.3. Exiting Diagnostic Mode ............................................................................. 4816. Alarm Signal Summary............................................................................................... 4917. Downloading Datalogs And Performing PC-BasedInstrument Configuration and Firmware Upgrades .................................................... 5018. Maintenance ................................................................................................................ 5118.1. Replacing the ToxiRAE Pro Li-Ion Battery ................................................ 5118.2. Proper Battery Disposal ............................................................................... 5418.3. Removing And Installing The Rubber Boot ................................................ 5518.4. Filter Replacement ....................................................................................... 5618.5. Replacing The Sensor .................................................................................. 5718.6. Cleaning The Exterior .................................................................................. 5818.6.1. Ordering Replacement Parts ......................................................................... 5819. Troubleshooting .......................................................................................................... 5920. Technical Support ....................................................................................................... 6021. RAE Systems Contacts ............................................................................................... 6022. Appendix A: Regulatory Information ......................................................................... 63