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“The Brain®” System Flush Helps Reduce
the Legionellae Risk.
High-temperature system disinfection – often referred to as system superheat and flush protocol specifically referenced in a number of Legionella Risk Reduction guidelines including:
Legionellae and Temperature
- Below 68°F (20°C) Legionellae can survive but are dormant
- Legionellae growth range (68°F–122°F; 20°C–50°C)
- Ideal growth range (95°F–115°F; 35°C–46°C)
- Above 122°F (50°C) Legionellae can survive but do not multiply
- At 130°F (54°C) Legionellae die within 5 to 6 hours
- At 140°F (60°C) Legionellae die within 32 minutes
- At 150°F (65.5°C) Legionellae die within 2 minutes
- Disinfection range (158°F–176°F; 70°C–80°C)
“The Brain®” from Armstrong has three-temperature programming capability through its control module. Where applicable, the control module serves as the portal to a building automation system (BAS). The BAS offers multiple-temperature programming and can be used as the master-programming vehicle.
Click on images above to view full diagram.
Automated thermal disinfection is suggested as an option but requires some forethought and analysis based upon the building type, occupancy and utilization. Clearly, automated system flushing would not be recommended for buildings with unlimited user access to traditional point-of-use fixtures.
For sites with unlimited user access – or for locations where ultimate user safety is desired – Armstrong has developed the "BrainWave®". The "BrainWave" offers programmable maximum, minimum and default temperatures, service flush and thermal disinfection with datalogging capabilities.
Supplied complete with programmable software via PDA, power supply, check valves and strainers. Wall-mounted control panel offering no touch controls for flow and temperature adjustment and programmable timed flow control.
Refer to the following Web sites for more information on Legionella:
http://www.hcinfo.com
http://www.legionella.org/biocides_research1.htm
http://www.osha.gov/dts/osta/otm/otm_iii/otm_iii_7.html
