MEDICAL AIR TREATMENT SYSTEMS

The PAS500 and PAS900 are ceiling mounted HEPA/UV Air Systems that combine reverse gel seal HEPA filters with high dosage UV lamps for use in high risk infection control areas including Operating Suites, TB Isolation Rooms, Compounding areas in pharmacies, or any critical care area.  Both units are flush mounted in any ceiling, have room side filter and lamp access, and come with a wall mounted control box for monitoring air flow, filter loading, and the UV lamps.  Used to comply with CDC, OSHA, or JCAHO requirements, the PAS500 and PAS900 can be used to create negative pressure, positive pressure, or be used for in-room air recirculation.

Click here to download product highlight sheet

Click here to download brochure

Technology:

High Efficiency Particulate Air Filters (HEPA) 
The HEPA filters used in the PAS500/950 are all individually scanned and certified to perform at 99.99% efficiency at .3 microns, and the HEPA filter is mechanically sealed within the cabinet to prevent air bypass around it so the unit performs at HEPA efficiency.  The PAS500/950 system come standard with reverse gel seal HEPA filters having an aluminum frame to ensure against frame disintegration or warping due to moisture. 

Ultraviolet Germicidal Irradiation
Four 22” UV lamps (two in the PAS500) located before and radiating on the dirty/inlet side of the HEPA filter destroy airborne bacteria and viruses and larger microorganisms that collect on the HEPA.   Mold is too big to be destroyed by UV on a single pass when airborne, but which are easily trapped by the HEPA filter and can therefore be deactivated due to constant UV bathing. Please review the sheet showing dosage of UV-C necessary for complete destruction of various airborne pathogens.  Microorganisms like mold can actually live and grow on filters (by feeding off of trapped particulate and microorganisms on the HEPA), eventually eating through the filter media and potentially creating pinhole leaks.  If this occurs over a long enough period of time, trapped microorganisms can destroy the integrity of the filter, rendering it inefficient and useless.  And by having the UV constantly radiating and “cleaning” the HEPA filter; it creates a safer environment for when the filters need to be changed.

Applications:
Medical facilities in operating rooms, TB Isolation rooms, intensive care units, examination rooms, Emergency Rooms, bronchoscopy/sputum rooms, and waiting areas.  Also used in laboratories (tissue culture or other high risk labs), clean rooms, homeless shelters, AIDS clinics, or anywhere there is a high risk of airborne bacteria and disease. 

Features/Advantages:
Negative/Positive Pressure and Recirculation Options
The PAS500 and PAS950 can be ordered as positive pressure units or negative pressure units.  As positive pressure units, they are connected to the supply ductwork of the central HVAC system to clean and disinfect supply air.  As negative pressure units, they will pull air out of a room, clean and disinfect it, and exhaust it outside of the room. Either can be made into an in-room air recirculation system, for all that is needed is to duct the unit to a separate return or supply grille in the room (depending on which model is purchased) so that clean air will be recycled back into the room.

Ceiling Mounted
The PAS500 and PAS950 are flush mounted within the ceiling (typically a standard T-Bar ceiling), so they are out of the way and don’t take up any space within the room.

Wall Mounted Control Panel
Every ceiling unit is equipped with a wall mounted panel with controls that enable the user to change speeds, monitor the HEPA filter and UV lamps, and turn the unit and the UV lamps off/on.

Low Replacement Costs 
UVGI not only enhances the effectiveness of the unit, but it also reduces the replacement costs, thereby increasing the overall efficiency.  The most expensive replacement cost of any similar air cleaning device is the HEPA filter, and premature HEPA replacement can occur in other units due to mold and microbial growth. However, with the PAS500/950, the entire HEPA filter is constantly bathed in UV light, so mold and microbial growth cannot occur.  Given this and a prefilter that will take out larger dust particles, the HEPA filters in our systems can last up to three years (depending on particulate load), thereby lowering annual maintenance costs. 

Ease of Maintenance 
All filters and lamps can be easily and quickly changed from within the room through the unit’s grille, as personnel will not need to go above the ceiling for standard maintenance.  The unit comes standard with a digital differential pressure gauge for showing when the HEPA filter needs to be changed, and an indicator light that monitors functioning of the UV lamps. 

Compliance with CDC and OSHA Guidelines 
The technology and type of function provided by the PAS500/950 is endorsed and recommended by the Center for Disease Control for control of Tuberculosis and other infectious disease.  As such, when using the PAS500/950 correctly, facilities comply with CDC and OSHA standards for infection control.

Safety Interlock 
A safety interlock mechanism is in place that will automatically shut down all power to the unit when the access door is opened.  This prevents direct exposure to UV radiation and to any powered electrical components.