2 Inspection, Cleaning, and Storage Procedures for 3M TR-300+ PAPR Assemblies Technical Bulletin - Release 1, May 2018
3M Personal Safety Division
• 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 filter 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.
IMPORTANT NOTE
i
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, all five LEDs should light up. Less than five may indicate
the battery pack is losing capacity and may need to be replaced.
Cleaning
The TR-300+ 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
The outer surfaces of the TR-300+ motor/blower assembly and battery pack may be wiped with a soft cloth dampened in a
solution of water and mild, pH neutral detergent.
• Do not use organic solvents, or abrasive cleaners as they may weaken and damage the plastic. Do not allow liquid to enter
outlet port or the motor housing area.
• Do not use compressed air or a vacuum to clean the interior of the motor/blower. This can damage the motor/blower.
• Use caution if cleaning around the battery pack connector pins where the battery seats on the bottom of the motor/blower
unit. Ensure this area and the pins are thoroughly dry before next use or storage.
The motor/blower and battery pack cannot be submerged for cleaning, and cannot be put in a respirator washer. The TR-
300+ PAPR when assembled as a system with headgear and a breathing tube can be worn through a decontamination shower
with a spray angle of up to 60 degrees from vertical.
The TR-300+ PAPR has an International Protection or Ingress Protection (IP) rating of IP53 (EN 60529: 1992). The IP53 rating
indicates the unit is protected against infiltration of dusts and also water falling as a spray from overhead at an angle no more
than 60 degrees on either side of vertical (i.e. up to 120 degrees total spread) that would interfere with normal operation.
When going through a decontamination shower, the TR-300+ PAPR must be in the vertical (upright) position as worn around
the waist. 3M does not recommend a TR-300+ PAPR mounted on the BPK-01 backpack be worn through a decontamination
