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NOTE: If the airflow indicator ball fails to rise at or above the minimum flow level, do not use the motor/blower unit. Refer
to the 3M™ Versaflo™ Powered Air Purifying Respirator TR-300+ Troubleshooting Guide or contact 3M Technical Service.
7. Low flow alarm check: Check the low airflow alarm by simulating a low airflow condition. With the motor/blower on:
NOTE: If the low airflow alarm fails to sound, do not use the unit. Contact 3M Technical Service.
ENTERING AND EXITING THE CONTAMINATED AREA
Prior to entering the contaminated area, complete the inspection procedures listed in these User Instructions and
ensure the selected PAPR setup is appropriate protection for the given airborne contaminant and concentration.
1. Turn the motor/blower on.
2. It is recommended to check both the airflow with the airflow indicator and low flow alarms.
3. Don the 3M™ Versaflo™ Powered Air Purifying Respirator TR-300+ Assembly and Headgear. Enter the work area.
4. Leave the contaminated area immediately if any of the following conditions occur:
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2134 7000
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3353 11000 M
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5182 17000 S
Chart 1: Determining airflow indicator zone based on elevation and temperature. Recommended use
temperature range: 23°F to 129°F (-5°C to 54°C). Recommended elevation: -328 feet to 14107 feet (-100
meters to 4300 meters). Contact 3M Technical Service if intended use may be outside of these ranges.
• Remove the airflow indicator and tightly cover the outlet of the motor/blower with the palm of your hand. The
motor should automatically speed up, attempting to compensate for the low airflow condition.
• Continue to press your palm tightly against the end of the outlet, making a tight seal. In less than approx. 30
seconds, the unit will sound an audible alarm, and the bottom bar on the filter loading/low flow indicator will
flash red (Fig 13-4).
• Remove your hand from the motor/blower outlet. In less than approx. 30 seconds, the audible alarm and the
flashing red LED should both stop when the motor returns to the selected speed.
NOTE: High environmental noise levels or use of hearing protection may interfere with the user's ability to hear
audible alarms. User may need to check for the visual alarms more frequently in high noise environments.
a. Any part of the system becomes damaged.
b. Airflow into the respirator decreases or stops.
c. The low airflow or low battery alarms trigger. In the event an audible or visual alarm triggers, the user should
immediately leave the contaminated area.
d. Breathing becomes difficult.
e. You feel dizzy or your vision is impaired.
f. You taste or smell contaminants.
g. Your face, eyes, nose or mouth become(s) irritated.
h. You suspect that the concentration of contaminants may have reached levels at which this respirator may no
longer provide adequate protection.
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