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

IV - ON-SITE CHECKS AND MAINTENANCE PROCEDURES
We recommend that the filter leak checks be performed before initial use, after relocation and after each
filter change. They should also be carried out at regular intervals, usually six months or one year, as
specified by an industrial hygienist, safety officer or other qualified person.
As reported earlier in this manual, each individual cabinet made by The Baker Company is carefully
tested 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 JR cabinet.
Use it as your record of the original testing, and as your guide to testing in the future. To gain many years
of satisfactory service; please be sure that your maintenance personnel come as close as possible to
duplicating these original test figures. Your test procedures should be identical to ours so that comparing test
results will have meaning. Please correspond directly with us to request detailed procedures for your
particular cabinet model.
Filter Media and Seal Leak Tests
When preparing your cabinet for use after shipment, and then at prescribed intervals throughout its
working life, you will need to verify that the filters have maintained their integrity. This is done by scan
testing 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 or
comparable substance aerosolized by flowing air through the nozzle(s). When generated with
Laskin type nozzle(s), the mean droplet size of the aerosol is 0.1 –3.0 micron with an average of
0.45 micron.
http://solid/prereleased/prereleased/STAN. PRODUCT/313/DOCS/313D000.doc
Page 16 of 59