3MH70-0712-6848-9 - 3M Adflo PAPR Pre-Filter (Pack of 6)

Optimized Filtration for Adflo PAPR Systems

The 3M Adflo Pre-Filter (15-0099-99X06) is a critical maintenance component designed to ensure the longevity and efficiency of the 3M Adflo Powered Air Purifying Respirator (PAPR). In the hierarchy of filtration within the Adflo turbo unit, this pre-filter serves as the first line of defense against airborne contaminants. By physically intercepting coarse particles, dust, and larger welding fumes, it prevents these materials from prematurely loading the High-Efficiency (HE) particulate filter. This staged filtration approach is essential for maintaining the pressure drop across the system within optimal limits, thereby reducing the mechanical load on the blower motor and conserving battery energy.

Engineered specifically for the Adflo architecture, the pre-filter installs seamlessly into the turbo filter cover. It is positioned directly behind the spark arrestor and in front of the HE filter. Regular replacement of the pre-filter is a standard operating procedure that yields significant economic benefits; by sacrificing the lower-cost pre-filter to heavy particulate loading, users can dramatically extend the operational lifespan of the more expensive HE filter. This is particularly important in industrial welding environments where particulate density can fluctuate significantly.

The 15-0099-99X06 is supplied in a case of six, facilitating a consistent maintenance schedule. For facilities managing multiple PAPR units, maintaining a stock of these pre-filters is vital for uninterrupted operations. Failure to replace pre-filters can lead to reduced airflow, triggering the Adflo unit's low-flow alarm and potentially compromising the assigned protection factor of the respiratory system. This product is compatible with all standard 3M Adflo PAPR configurations used in conjunction with Speedglas welding helmets, ensuring that welders receive clean, filtered air according to NIOSH standards.

Proper maintenance of the filtration stack is not merely a matter of compliance but of system integrity. The pre-filter's porous media is designed to trap particles without creating excessive resistance to airflow when new. However, as it becomes saturated, resistance increases. Therefore, visual inspection and regular replacement intervals are recommended to ensure the Adflo system continues to provide the cooling comfort and respiratory protection it was designed for.