American Safe Room ASR-200-AV-NBC Safe Cell Installations- und Betriebshandbuch - Seite 11

Blättern Sie online oder laden Sie pdf Installations- und Betriebshandbuch für Luftreiniger American Safe Room ASR-200-AV-NBC Safe Cell herunter. American Safe Room ASR-200-AV-NBC Safe Cell 19 Seiten. Nuclear, biological, and chemical overpressure filter system

Seite drucken

Testing the system

General discussion

The Safe Cell is only one component of a space protected from airborne pathogens. Others include

proper sealing of the space and the release of overpressure in a metered amount. Your protected

space should be envisioned as a pressurized vessel with a calibrated release valve. The overpressure

ensures that all air enters only through the filtration system and the output ensures that you have

true ventilation that introduces oxygen that the occupants need to inhale and removes the carbon

dioxide that the occupants exhale. If you have a well sealed protected space, we recommend that

you install one of our overpressure relief valves to meter the outflow of air in a known, calibrated

quantity. See Section J for more information about the overpressure relief valve.

Test number one: the negative pressure test

The purpose of this test is to insure that all unprotected rooms and space that surround the

protected space are in fact at a lower air pressure than the actual protected space.

To conduct this test simply place - in a safe manner - lighted scented punks in the surrounding

unprotected rooms for a period of 5 to 10 minutes while the Safe Cell is in operation. No scent

should be detected in the protected space.

Test number two: the positive pressure test

The purpose of this test is to insure that all of the air in the room is escaping outwards through the

cracks around the doors and windows.

To conduct this test, shadow the cracks around the doors and windows with a lighted smoke punk

and observe the direction of the smoke draw:

Smoke drawn outward through a crack indicates the venting of positive pressured air from the

protected space. This condition is allowable and indicates that the system is working properly.

Smoke rising off the smoke punk and is neither drawn out through the crack or blown back

into the protected space. This condition is allowable and indicates that the crack is sealed.

Smoke blows back into the protected space from the crack. This condition is unallowable and

indicates insufficient overpressure in the protected space. This indicates that the system is

improperly installed or that the room requires additional sealing.

ASR-200-AV-NBC Safe Cell

Installation and Operation Manual

Revision C - April 27, 2016

Section

Page 11