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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.
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).
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. Contam-ination 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.
