The HJ3100 fume and smoke
extraction unit is designed expressly for use at soldering stations,
extracting the contaminated air directly at the source.
The HJ3100 is a high-mass flow, low vacuum system. Contaminated air is
captured from the workplace surrounding the soldering station by the hood
or hoods, and transferred to the HJ3100 unit by flexible or rigid ducts.
Inside the unit, two filters, comprising three stages of filtering,
remove the contaminants from the air. The purified air is then returned to
the area where the HJ3100 is located.
The pre-filter is made
of a treated polyester material that removes coarse particles, such as dust,
thus extending the life of the main HEPA filter. The HEPA (High Efficiency
Particulate Air) filter consists of a pleated fiberglass paper medium,
providing the greatest amount of surface area within the volume of the
filter case.
The standard filters used in the HAKKO HJ3000-series fume
extractors contain an activated carbon element built into the filter. This
filter is designed to last the life of the main HEPA filter. Carbon filters
have absorption ratings of 80-85%.
Efficiencies of the various HEPA/carbon filters for the HJ3100 are
greater than 99.97%. All tests per the DOP test as stipulated in
MIL-STD-282. (For more information see multi-stage
filtration)