3M Bair Hugger 775 Bedienungsanleitung Seite 247

Frequently Asked Questions (FAQ) on Filtration
What filter is used in the 3M™ Bair Hugger™ Model 775 warming unit?
The Model 775 uses the same filter media as has for many years been used with prior Bair Hugger -700series models. That filter media is
classified on an industry-standard scale as MERV 14 at 48 CFM (cubic feet per minute) under ASHRAE Standard 2012-52.2: Method of
Testing General Air Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size.1,2
What is a MERV rating?
The Minimum Efficiency Reporting Value, or MERV, is a measurement scale to rate the efficiency of an air filter as a
function of particle size based on the ASHRAE Standard 2012.1,2.1,2-52.2
What is the MERV rating recommended for operating rooms?
ASHRAE Standard 2013-170, Ventilation of Health Care Facilities, provides standards and guidance on the design
requirements for ventilation systems utilized in health care facilities.3 The standard recommends that operating rooms
utilize a filter that is equivalent to MERV 14.3 This MERV rating is specific to the ventilation system in the hospital's
operating room.
What is the MERV rating recommended for patient warming devices in the operating room?
There is no filtration standard for patient warming devices utilized within the operating room. The ASHRAE Standard is a
standard used to assess filter efficiency in health care ventilation systems.
Is a HEPA filter necessary?
No. We are not aware of any evidence or claim demonstrating that a HEPA filter improves patient safety.
What is the ASHRAE 52.2‑2012 standard?
The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) is a global organization
focused on research, education and standards for heating, ventilation, air conditioning and refrigeration. The ASHRAE
standard 20121,2-52.2 provides test methods for air intake filters to ensure standardization in classification and
efficiency. For more information on ASHRAE, please visit www.ashrae.org.
1. ANSI/ASHRAE Standard 2012-52.2: Method of Testing General Air Ventilation Air-Cleaning Devices for Removal Efficiency by Particle
Size. The American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. © 2012 ASHRAE. ISSN 2336-1041. Available
at http://www.ashrae.org. Accessed on 2016/7/6.
2. ANSI/ASHRAE Addenda a, b, and d to ANSI/ASHRAE Standard 2012-52.2. Method of Testing General Air Ventilation Air-Cleaning
Devices for Removal Efficiency by Particle Size. The American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
© 2015 ASHRAE. ISSN 2336-1041. Available at http://www.ashrae.org. Accessed on 2016/7/6.
3. ANSI/ASHRAE/ASHE Standard 2013-170: Ventilation of Health Care Facilities. The American Society of Heating, Refrigerating and Air-
Conditioning Engineers, Inc. © 2013 ASHRAE. ISSN 2336-1041. Available at http://www.ashrae.org. Accessed on 2016/7/6.
Refer to the 3M™ Bair Hugger™ Model 775 warming unit Operator's Manual for a complete list of instructions for use,
preventative maintenance, warnings and cautions. For more information about the Bair Hugger warming system, please
contact your 3M representative, call us at 3957-228-800-1 or visit www.bairhugger.com.
3M, BAIR HUGGER and the BAIR HUGGER logo are trademarks of 3M Company, used under license in Canada.
© 3M 2016. All rights reserved.
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