3M™ Product Name
Introduction
The 3M™ Versaflo™ TR-300+ Powered Air Purifying Respirator (PAPR) assemblies are designed to be used with certain 3M
breathing tubes and headgear to form a complete respirator system.
Occupational use of respirators must be in compliance with applicable health and safety standards. By United States regulation
employers must establish a written respirator protection program meeting the requirements of the Occupational Safety and
Health Administration (OSHA) Respiratory Protection standard 29 CFR 1910.134 and any applicable OSHA substance specific
standard. OSHA 1910.134 states that employers shall ensure that respirators are inspected, cleaned, and properly stored.
This Technical Bulletin will review the 3M recommended cleaning procedures as well as inspection and storage guidelines for
the 3M™ TR-300+ PAPR assemblies. Refer to the TR-300+ PAPR
User Instructions
as well as the
User Instructions
for your
specific headgear for proper assembly, use and limitations of your specific respirator system.
Inspection
The 3M™ TR-300+ PAPR must be inspected before each use to ensure good operating condition. Detach the battery pack,
breathing tube, headgear, filter cover, filter, and prefilter or spark arrestor/prefilter (if used) from the motor/blower. If any
damage, non-functionality, or signal observations as noted below are discovered during the inspection, remove PAPR system
from use and service or replace as appropriate.
Motor/blower
IMPORTANT NOTE
i
Except for removing the filter cover, high efficiency filter, and prefilter or prefilter/spark arrestor the main housing of
the motor/blower cannot be opened and has no user serviceable parts.
• The filter cover must be intact with no cracks or other damage.
• The main housing or case of the motor/blower unit must be intact with no cracks, holes, or other damage. The plastic
should not be discolored, chalky, or soft as these may be signs of deterioration of the housing.
• The area of the motor/blower unit under the filter should be clean and free of contaminants. Contamination noted here may
indicate improper/lack of filter installation or damage to the filter or filter gasket.
• The user interface (motor blower display) should be clean. All LED segments should be lit and clearly visible during initial
start-up of the motor/blower. Excessive build-up of materials on the display may mask a visual alarm from the wearer. The
ON/OFF switch should be intact with no cuts, tears or holes.
• The filter release button should function smoothly and hold the cover securely onto the motor/blower.
• The outlet of the motor/blower (i.e. where the breathing tube attaches) should be inspected for any damage, dirt, debris,
or other contamination which may interfere with proper attachment of the breathing tube.
• The belt loops on the back of the motor/blower should be intact and undamaged.
Filters and Filter Accessories
• The high efficiency (HE) filter should be intact with no cracks, tears or other damage noted. If the filter is wet or appears
heavily loaded with particulate, it should be replaced. Never attempt to clean the filter by any means as intentional
manipulation can easily damage the filter media
Inspection, Cleaning, and Storage Procedures for 3M TR-300+
PAPR Assemblies
Technical Bulletin
Release 1, May 2018
