3M TR-300N+HKS, TR-300N+HKL User Manual
Technical Bulletin
August, 2020
Revision �
Introduction
The 3M™ Versaflo™ TR-300, TR-300+, and TR-600 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, TR-300+, and TR-600 PAPR assemblies. Refer to the TR-300, TR-300+, and TR-600 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, TR-300+, and TR-600 PAPR must be inspected before each use to ensure good operating condition.
Detach the belt, 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. The 3M™ Versaflo™ TR-300, TR-300+,
and TR-600 Series Parts and Accessories exploded view posters may be helpful for identifying components (3M.com/
versaflo).
Motor/blower
NOTE: Except for removing the filter cover, filter/cartridge, high efficiency filter, and prefilter or prefilter/spark arrestor and
filter latch assembly, 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 or filter/cartridge 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 filter or filter/cartridge securely onto the motor/blower.
• The filter cover should sit securely onto the filter or filter/cartridge (if used for TR-600).
• 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.
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• The belt attachment slots (TR-300 and TR-300+) or T-bars (TR-600) on the back of the motor/blower should be intact
and undamaged.
• Check the airflow using the TR-970 (TR-300) or TR-971 (TR-300+ and TR-600) airflow indicators as described in the
appropriate PAPR User Instructions or in Technical Data Bulletin #221 – Conducting Airflow Check on the 3M™
Versaflo™ PAPR TR-600.
• Check the low airflow alarm by fully covering the airflow outlet as described in the PAPR User Instructions or in Tech-
nical Data Bulletin #221 – Conducting Airflow Check on the 3M™ Versaflo™ PAPR TR-600.
Filters and Filter Accessories
• The filter cover must be intact with no cracks or other damage.
• The filter or filter/cartridge should be intact with no cracks, tears or other damage. Closely inspect filter/cartridge
plastic housing including the corners and latches, outer rectangular barrier, and inner circular filter seal gasket for cracks,
tears, cuts, distortion, indentations or debris. If the filter or filter/cartridge has been mishandled or dropped, re-inspect
fully. If you have any concerns, contact 3M Technical Service for guidance.
• If the filter is wet or appears heavily loaded with particulate or damaged, it should be replaced. Never attempt to clean
the filter by any means as intentional manipulation can easily damage the filter media.
• 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
• The gasket on HE filter should be firmly attached, clean and intact. There should not be any indentations, tears, rips, or
debris. Replace the filter immediately if any damage is noted.
• The prefilter (if used) should be intact with no tears or cuts. If the prefilter is wet or appears heavily loaded with particulate, it should be replaced. Use of the prefilter and frequent change out may help prolong the life of the HE filter and
help maximize battery pack run time.
• The metal spark arrestor/prefilter (if used) should be clean and intact with no damage. Frequent cleaning or change out
of the spark arrestor may help prolong the life of the HE filter and help maximize battery pack run time. The spark
arrestor must be used during hot work, molten metal or spark creating operations.
NOTE: The foam prefilter and the metal spark arrestor/prefilter should not be used simultaneously. Review the TR-300+ PAPR
NIOSH approval label to determine which component is approved for use with your specific system configuration.
Battery Pack
• Inspect the battery pack for cracks, holes or other damage. The plastic case should not be discolored, chalky, or soft.
These may be signs of deterioration of the battery housing.
• Battery pack electrical contacts should be clean and dry with no corrosion.
• Battery pack hinge should be intact with no damage or erosion.
• Battery pack release button should move freely and function properly.
• Attach the battery pack to the motor/blower and gently tug on the battery pack to confirm it properly attaches, and the
battery pack is being held firmly in place.
• When pushing the “Test” button on a fully charged battery pack, on a new battery all five LEDs should light up. On an
aged battery less than five LEDs may light up even if the battery is fully charged. At a certain point the battery may need
to be replaced. For additional battery information, see Technical Data Bulletin #223 – Battery Maintenance for 3m™
Versaflo™ Respirator Systems.
Belt
• Inspect the belt buckle for damage such as breaks or cracks. Inspect the belt leads for cuts and tears. Inspect the hip
belt for tears and integrity.
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Battery Charger
• Inspect the power base and cradle for cracks or other damage.
• Inspect the power cord for frayed wires or other damage.
• Ensure the gold electrical contacts are clean, dry and free of debris.
• Gently push on each of the gold contact pins. They should easily push down and quickly pop back up.
• Ensure the charger tray is clean, dry and free of debris.
Headgear
• Inspect headgear based on the headgear specific User Instructions.
Cleaning
The TR-300, TR-300+, and TR-600 should be cleaned regularly. Follow the hygiene practices established for your worksite
for the specific contaminants to which the respirator assembly has been exposed.
Motor/blower unit and battery pack
• Do not use organic solvents (i.e. toluene, paint thinner) or abrasive cleaners as they may weaken and damage the plastic.
Do not use cleaners that leave a residue. Do not allow liquid to enter the air inlet port or breathing tube port.
• Do not use compressed air or a vacuum to clean the interior of the motor/blower. This can damage the motor/blower.
• Use caution when cleaning around the battery pack connector pins where the battery seats on the bottom of the motor/
blower unit to avoid pins from bending, breaking, or introducing debris into the pin housing. Ensure this area and the
pins are thoroughly dry before next use or storage.
Wipe Down Cleaning
• The outer surfaces of the TR-300, TR-300+, and TR-600 motor/blower assembly and battery pack (still attached) may
be wiped with a soft cloth dampened in a solution of water and mild, pH neutral detergent. In general, many commonly
used water-based hard-surface cleaners may also be used that will not damage the PAPR system. See Table A for a list
of tested cleaners and their effects. Do
blower/charger connection pads on the battery – these are coated and direct cleaning with moist cloths or
wipes should be avoided.
not attempt to clean the battery connection pins on the blower or the
Submersion Cleaning (TR-600 only)
With the blower inlet and outlet plugs installed the TR-600 PAPR has an International Protection or Ingress Protection (IP)
rating of IP67 (EN 60529: 1992). The TR-600 batteries also have an IP67 rating. The IP67 rating indicates the unit is protected
against infiltration of dusts and water that would interfere with normal operation when immersed in water up to 1 meter (3
feet) for up to 30 minutes. However, best practice would be to limit immersion to the shallowest depth and shortest time
required for effective cleaning.
• If submersion cleaning is desired, remove the filter/cartridge and breathing tube. To minimize material falling onto the
motor/blower, remove the filter/cartridge and breathing tube while each of those connections are facing downward.
Attach the air inlet and air outlet cleaning and storage plugs (3M™ Cleaning and Storage Kit TR-653) into the TR-600
(see Fig 1). The TR-600 can now be rinsed under running water, submersed in water, or put in a respirator washer for
further cleaning. Water temperature should not exceed 122°F (50°C). Blowers which have been dropped or damaged
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