3M BT-60 Serie Instrucciones De Uso página 4

Contaminants that are dangerous to your health include those that you may not be able to see or smell. Leave the contaminated area immediately if
any of the following conditions occur:
– Any part of the system becomes damaged.
– Airflow into the respirator decreases or stops.
– Breathing becomes difficult.
– You feel dizzy or your vision is impaired.
– You taste or smell contaminants.
– Your face, eyes, nose or mouth become(s) irritated.
– You suspect that the concentration of contaminants may have reached levels at which this respirator may no longer provide adequate
protection.
INSPECTION
Before each entry into a contaminated area, inspect each of the following components to help ensure proper function of the respirator system. Any
damaged or defective parts must be replaced prior to use. Do not enter a contaminated area with damaged or defective parts. See your supervisor.
• Breathing tube: Look for tears, holes or cracks. Bend the tube to verify it is flexible. Inspect the two bayonets that connect to the tight-fitting
respirator for damage. Ensure two gaskets are present at the end of the breathing tube that connects to the air source, and ensure they are not
damaged. The arrows in Fig. 1 point to the location of each gasket. The breathing tube should fit firmly into the air source connection and should
attach securely to the tight-fitting facepiece.
• PAPR blower assembly: Inspect according to the User Instructions for the 3M™ Versaflo™ Powered Air Purifying Respirator TR-600.
• Half facepiece respirator: Inspect according to the User Instructions supplied with 3M™ Half Facepiece Respirator 6000 Series, 6500 Series, or
7500 Series.
• Full facepiece respirator: Inspect according to the User Instructions supplied with 3M™ Full Facepiece Respirator FF-400 Series, 6000 Series, or
7800S Series.
• TR-973 Air Flow Indicator: Inspect the tube for any damage and ensure the float ball in the TR-973 moves freely in the tube. Ensure the gasket at
the bottom end of the tube is in place. The Air Flow Indicator should fit securely into the air source connection.
Checking airflow using TR-973 Tight-fitting Air Flow Indicator
Note: The BT-60 Series Breathing Tube or the TR-973 Air Flow Indicator must be connected to the TR-600 blower prior to powering on the blower in
order to activate tight-fitting mode. If the blower is powered on prior to connecting the BT-60 Series Breathing Tube or TR-973 Air Flow Indicator, the
blower will operate in loose-fitting mode. To activate tight-fitting mode the blower must be turned off and restarted with the BT-60 Series Breathing
Tube or TR-973 Air Flow Indicator installed. Tight-fitting mode is indicated on the motor blower when the full facepiece icon is lit (Fig. 3-6). Once the
blower is running in tight-fitting mode it will remain in tight-fitting mode, even if the breathing tube is removed- as long as the blower is not powered
down. In tight-fitting mode, the blower operates at lower preset speeds designed to be more comfortable for the tight-fitting facepiece wearer.
Airflow check
The TR-600 is pre-calibrated to ensure required airflow. However, the 3M™ Tight-fitting Air Flow Indicator TR-973 must be used to verify minimum
required airflow is attained prior to each day's use. The TR-600 compensates for changes in air density, which is affected by elevation and air
temperature. During use, if you suspect the TR-600 is not delivering a minimum of 4 cfm (113 lpm), exit the contaminated area, see your supervisor,
and recheck the airflow with the 3M™ Air Flow Indicator TR-973. The airflow is checked with your current filter installed.
• Ensure float ball in the TR-973 moves freely in the tube and the gasket at the bottom end of the tube is in place.
• Insert the TR-973 into the outlet of the TR-600 Motor Blower unit outlet by aligning the two pins on the AFI to the slots on top of the blower (Fig. 2).
• Turn the motor blower unit on by pressing and holding the power button for 1 second (Fig. 3-1). Run the 3M™ Versaflo™ Powered Air Purifying
Respirator TR-600 for up to 1 minute to allow the airflow to stabilize.
• Ensure the motor blower is operating in tight-fitting mode. Tight-fitting mode is indicated on the motor blower when the full facepiece icon is lit
(Fig. 3-6). Once the blower is running in tight-fitting mode it will remain in tight-fitting mode, even if the breathing tube is removed, as long as the
blower is not powered down.
• With the Air Flow 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. 4). Air Flow Indicator must be in the vertical position for an accurate reading.
W WARNING
Fig. 1
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