The purpose of this letter is to provide guidelines for cleaning and disinfecting the 3Mâ„¢ TR-300 Powered Air Purifying Respirator (PAPR) Assembly, following potential exposure to coronaviruses such as the Middle East Respiratory Syndrome Coronavirus (MERS-CoV). Please always refer to the latest information from trusted sources such as the US Centers for Disease Control and Prevention (US CDC), the European Centres for Disease Prevention and Control (ECDC) and the World Health Organization regarding selection, use, maintenance and cleaning of personal protective equipment.
The US CDC published â€œGuideline for Disinfection and Sterilization in Healthcare Facilities, 2008â€ (CDC Guideline 2008) William A. Rutala, Ph.D., M.P.H., David J. Weber, M.D., M.P.H. and the Healthcare Infection Control Practices Advisory Committee (HICPAC). http://www.cdc.gov/hicpac/pdf/guidelines/Disinfection_Nov_2008.pdf This document includes information on disinfecting equipment and surfaces potentially contaminated by coronaviruses. As MERS-CoV is a relatively new virus, the CDC has not published to date specific information regarding disinfection of this virus.
In the CDCâ€™s 2008 Guideline, many chemicals were investigated and several chemical germicides were cited by the US CDC to be effective for coronaviruses, when used as indicated in the product user instructions. Two of these chemicals can be used to clean 3Mâ„¢ powered air purifying respirators per the User Instructions and those included in this document:
Effective after a 1-minute contact time:
Your facility should review this information thoroughly prior to selecting the disinfecting product for your equipment and specific application. Please note that 3M has not evaluated the effectiveness of these agents with regards to inactivating viruses on 3M equipment.
Note that components of PAPR respiratory systems may become damaged over time with prolonged or extended use of disinfecting products. As discussed in the User Instructions, users must inspect the components of their PAPR respiratory systems following each disinfecting cycle and prior to re-use. If you discover any signs of damage, remove the component from service and discard and replace or repair as appropriate, following the guidance in the product User Instructions. Follow the hygiene and infection control practices established by your employer for the targeted organisms or for coronavirus.
Follow the hygiene and infection control practices established by your employer for the targeted organisms or for coronavirus.
Cleaning, sanitizing and/or disinfecting the 3Mâ„¢ TR-300 Powered Air Purifying Respirator (PAPR) Assembly:
Follow the following general guidelines for cleaning your TR-300 PAPR assembly. Please also refer to 3M Technical Data Bulletin #198 Inspection, Cleaning and Storage Procedures for 3Mâ„¢ TR-300 PAPR Assemblies.
Initial Steps and Inspection
Motor/blower unit and battery pack
HE filter and prefilter
After cleaning and drying
Glossary of Terms
Removal of all soil (organic and inorganic) and foreign material from objects and surfaces. This is typically accomplished with water and mechanical action. Detergents may be used to assist the process.
Note:Failure to remove foreign material (soil, lubricants, etc.) from an object can make the disinfecting process ineffective.
A process of inhibiting or destroying disease-producing microorganisms, but may not kill bacterial spores. It usually involves the use of chemicals, heat and/or ultraviolet light and is divided into three categories: high, intermediate and low level disinfection.
A process to reduce the number of microorganisms on an inanimate object to â€œsafeâ€ levels, but may not destroy disease-producing organisms, e.g., dishes and eating utensils are normally sanitized.
A validated process to render a product free of all forms of viable microorganisms including bacteria, viruses, spores and fungi.
Note: Items must be thoroughly cleaned before effective sterilization can occur.
References for Terms
Rutala, WA. American Journal of Infection Control. APIC Guideline for Selection and Use of Disinfectants
Vol. 24, No. 4, pp. 313-342, August 1996.
Rutala, WA. CDC. Guideline for Disinfection and Sterilization in Healthcare Facilities. 2008.
Before using any of the products or information detailed herein, you must evaluate it and determine if it is suitable for your intended use. You assume all risks and liability associated with such use. 3M makes no warranties relating to the efficacy of any of the products detailed herein in preventing the spread and/or contraction of the coronavirus. 3M will not be liable for any loss or damage arising from any information contained herein, whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract, negligence or strict liability.
Technical information provided by 3M is based on experience and/or test data believed to be reliable but the results may not be relevant to every userâ€™s application. For this reason 3M does not accept any responsibility or liability, direct or consequential, arising from reliance upon any information provided. The user should determine the suitability of any disinfectant product for compatibility for use with 3M PSD products.