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

IV - ON-SITE CHECKS AND MAINTENANCE PROCEDURESWe recommend that the filter leak checks be performed before initial use, after relocation and after eachfilter change.They should also be carried out at regular intervals, usually six months or one year, as specifiedby an industrial hygienist, safety officer or other qualified person.As reported earlier in this manual, each individual cabinet made by The Baker Company is carefullytested before it leaves the factory.Your copy of the test report, which you will find at the back of this manual,gives the factory test results for your BIOPROtect II cabinet.Use it as your record of the original testing, and as your guide to testing in the future.To gain many yearsof satisfactory service, please be sure that your maintenance personnel come as close as possible toduplicating these original test figures. Your test procedures should be identical to ours so that comparing testresults will have meaning. Please correspond directly with us to request detailed procedures for yourparticular cabinet model.Filter Media and Seal Leak TestsWhen preparing your cabinet for use after shipment, and then at prescribed intervals throughout itsworking life, you will need to verify that the filters have maintained their integrity.This is done by scantesting the filter faces and seals.The Institute of Environmental Sciences recommended practice IES-RP-CC034.1 would be a good reference for this testing.The equipment needed will be:• An aerosol photometer. The instrument should sample air at a flow rate of 1 CFM.•• A (D.O.P) generator with Laskin nozzle(s). Liquid dioctylphthalate (DOP), dioctylsebacate orcomparable substance aerosolized by flowing air through the nozzle(s).When generated withLaskin type nozzle(s), the mean droplet size of the aerosol is 0.1 –3.0 micron with an average of0.45 micron.Page 16 of 54