Step 1: Startup checks and control panel. <ul class="guide-bullets"><li>Press On/Off and review airflow level, attached-battery status, and filter loading before use.</li><li>Check the breathing tube, headtop connection, and TR-927 backpack harness for a secure fit.</li><li>Complete the airflow and alarm check before entering the work zone.</li></ul> Visual illustration provided.
1
Startup checks and control panel
- Press On/Off and review airflow level, attached-battery status, and filter loading before use.
- Check the breathing tube, headtop connection, and TR-927 backpack harness for a secure fit.
- Complete the airflow and alarm check before entering the work zone.







