Honeywell 11255 manual Guide Specifications, 1.0General, 2.0Filter Construction, 3.0Performance

Guide Specifications

1.0General

1.1Alpha Cell HEPA filters shall be extended media (separator type) (Pureform separatorless type) fil- ters as manufactured by Flanders.

1.2Filter sizes, capacities and construction options shall be as scheduled on the drawings.

1.3Filters shall be (UL 900 Class 1)( UL 900 Class

2)listed.

2.0Filter Construction

2.1The filter pack shall be cons ruct d by pleating a continuous sheet of non-woven water-resistant fiberglass media around hemmed-edge corrugat- ed aluminum separators. The filter pack shall be constructed by pleat ng a continuous sheet of formed, corrugated medium so that the pack is self-supporting without the use of spacers of any kind, including separators, tape strings, adhesives or strips of media.

2.2The filt r pack shall be sealed into a (galvaneal) 409 stainl ss steel) (304 stainless steel) (particle board) (fire-retardant particleboard) (fire-retardant plywood) frame with a fire retardant(polyurethane foam) ( solid urethane) sealant. (Steel frames shall be 16 ga.)(Wood frames shall be 3/4” thick.)

2.3(A 40-durometer closed-cell neoprene gasket)

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(Silicone jel in a channel) shall be provided on one or more sides to seal the filter in the mounting device.

3.0Performance

3.1Initial and final resistances shall not exceed the scheduled values.

3.2Alpha Cell HEPA Filters shall have a minimum effi- ciency of 99.97% on 0.30 micrometer particles when tested at rated capacity on a Q-107 Penetrometer Each filter shall be challenged with an approved nearly monodispersed oil aerosol of 0.30 micrometer size.Measure the upstream and down stream concentration of these particles with a light scattering photometer, determine the pene- tration and calculate the efficiency.

3.3Alpha Cell Scan Tested HEPA Filters shall have a minimum efficiency of 99.99% on 0.30 micrometer particles. Scan Testing shall be in accordance with Section 6.2 of IEST-RP-CC034.1. The scan test shall consist of challenging the filter with a high concentration of an approved oil aerosol or PSL Spheres.Utilizing a photometer or particle counter, the media pack and the pack- to- frame seal shall be scanned to insure that there are no leaks greater than .01% of the upstream concentration at 100 fpm face velocity