The Department of Civil and Environmental Engineering at the University of Hawaii utilizes a Sentry Air Systems Model 400 Welding Fume Extractor for a variety of processes:
In our machine shop, we perform a number of operations including milling, lathing, welding and soldering/brazing. Most recently we were tasked with milling a bunch of 3/4″ thick plate steel. The resulting smoke and smell from the cutting oil were overwhelming. We tried to ventilate the room with fans but it was ineffective due to our shop being air conditioned within another larger shop. I decided to look for a portable air cleaner which could be used for all tasks. After looking at several different manufacturers, it became obvious the SS-400-WFE portable air cleaner was far and beyond the one to get given its compact size & portability, low noise, good airflow, low power consumption, and versatility. After receiving our SS-400-WFE, I’m happy to report smoke and smell are things of the past. The SS-400-WFE completely eliminated both. The design is elegantly simple and it’s also well built and should last for many years to come.
We also have very restrictive procurement rules and Sentry’s sales engineer, McKay, was very helpful and patient in making it happen.
Mitch Pinkerton — University of Hawaii: Honolulu, HI
The pictures below show the difference in air quality before using the Sentry Air Welding Fume Extractor and while using the extractor. These photos were provided by the University of Hawaii.
The Model 400 Welding Fume Extractor is equipped with a powerful fan and filtration system that utilizes HEPA filtration [up to 99.97% efficient on particles 0.3 microns and larger] to eliminate hazardous airborne fume and particulate. The flame-retardant, self-supportive flex arm allows the operator to place the hood inlet in the most effective position for their particular application. This unit also features heavy-duty casters and wheels that make this unit portable.