OPERATOR'S MANUAL BIOPROtect II Vent to ... - Baker Company

Procedure for filter leak tests1. Decontaminate the cabinet in accordance with NSF/ANSI standard-49-2002 and your health andsafety officer.2. Remove the front upper panels by first removing the ¼-20 hardware. Remove the damper from thefront of the filter. This will expose the exhaust filter.3. Find the 1/8” NPT hose barb on the top of the cabinet used for measuring the upstreamconcentration of challenge.4. Turn on the aerosol photometer and set-up according to the manufacturer's instructions.5. With the cabinet’s blowers running, position the D.O.P. generator so as to introduce air generatedsmoke into any of the work bay openings (side wall to door openings or rear wall openings are allappropriate for introducing challenge). Measure the upstream concentration of the challenge. Youmust have a concentration of at lease 10 micrograms per liter.6. Supply Filter: Remove the diffuser prior to scanning the filter. Holding the photometer probe nomore than one inch from the filter face scan the entire surface area and perimeter (filter gasket framearea) in slightly overlapping strokes at a traverse rate of not more than ten feet per minute.7. Exhaust filter: You may scan the downstream face of the exhaust filter from outside of the cabinet.8. Eliminate leaks in the gasket frame area by re-tightening the filter gasket.9. An unacceptable leak is defined as a reading greater than 0.01%Page 17 of 54