3M Versaflo TR-300+ Serie Mode D'emploi page 12

3. Battery pack: Confirm that the battery pack is fully charged or charge is sufficient for duration of the work period.
Ensure plastic surrounding electrical contact pins are intact. The battery pack must be latched to the motor/blower.
Gently tug on the battery to ensure secure connection.
4. Breathing tube: Examine the entire breathing tube for tears, holes or cracks. Bend the tube to verify that it is
flexible. Ensure the gaskets located at both ends of the breathing tube (i.e. headgear and air source connections)
are present and not damaged. The breathing tube should fit securely into the air source connection.
5. Headgear: Follow the User Instructions supplied with your 3M™ Headgear to ensure correct system operation.
6. Airflow check:
The TR-300+ is pre-calibrated to ensure required airflow. However, the 3M™ Airflow Indicator TR-971 must
be used to verify minimum required airflow is attained prior to each day's use. The TR-300+ compensates for
changes in air density, which is affected by elevation and air temperature. During use, if you suspect the TR-300+
is not delivering a minimum of 6 cfm (170 lpm), exit the contaminated area, see your supervisor, and recheck the
airflow with the 3M™ Airflow Indicator TR-971. The airflow is checked with your current filter installed.
• Ensure float ball in the TR-971 moves freely in the tube and the gasket at the bottom end of the tube is in place.
• Insert the TR-971 into the outlet of the TR-300+ motor/blower unit. If the breathing tube is in place, it must be
removed to allow the airflow indictor to be inserted (Fig. 14-1).
• Turn the motor/blower unit on by pressing the power/flow control button for two seconds and release. Run the
3M™ Versaflo™ Powered Air Purifying Respirator TR-300+ for up to 1 minute to allow the airflow to
stabilize.
• With the airflow indicator in a vertical position, ensure that the bottom of the floating ball rests at, or above, the
minimum flow mark for the 'letter' representing your 'Zone' (Fig. 14-2). Airflow indicator must be in the vertical
position for an accurate reading.
• The airflow indicator is graduated into different 'zones' based on air density, which is based on elevation and
ambient temperature. To determine your zone, determine the elevation and temperature for the environment
where you are conducting the airflow check. See your supervisor if you are not certain of these values. Find the
zone where your elevation and temperature intersect on the chart supplied with the airflow indicator (Chart 1).
Fig. 14-1 Attaching airflow indicator Fig. 14-2 Checking airflow
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