A-A-2944
3.4 Switch. Each cleaner shall be provided with a quick make-and-break type power switch.
3.5 Cord. The power cord assembly shall have three conductors and a three-prong attachment plug, and shall have a minimum length of 35 feet (10.7 m).
3.6 Cord storage. Each cleaner shall be provided with a means for coiling, wrapping, or otherwise storing the power cord when the cleaner is not in use.
3.7 Filtration system.
3.7.1 General. The filtration system shall consist of the filter assemblies and the tank assembly. When the cleaner is employed for dry pickup, all filter assemblies shall be employed. When the cleaner is converted for liquid retrieval, the separator and automatic shutoff assembly may take the place of the primary filter (s).
3.7.2 Filters. The primary filter shall filter particulate matter approximately 1µm and larger and shall retain this matter for easy disposal. This filter may be disposable. The additional filter(s) shall be of the high-efficiency particulate air impaction type in accordance with UL 586, entrapping 99.97% of all matter and microorganism 0.3 µm and larger. No ingested unfiltered air shall be exhausted from the cleaner.
3.7.3 Tank. The tank shall be of stainless steel, plastic, or shall have a durable interior epoxy-coating. The tank shall hold the minimum liquid capacity for the size specified before the shutoff mechanism activates.
3.7.4 Wet pickup. When the cleaner is to be used for liquid retrieval, the only filter which must remain installed is the 0.3 µm high-efficiency particulate air impaction filter. The machine shall be equipped with an effective separator which will prevent liquids and nonparticulate solid objects from passing through to the impaction filter and vacuum producer. An automatic shutoff assembly shall be provided which interrupts the air intake or power to the cleaner when the minimum liquid capacity is reached.
3.8 Mobility. The cleaner shall have a bearing-equipped wheeled chassis or bearing-equipped wheels mounted on the tank to provide mobility. Wheels and casters are acceptable in any combination. The cleaner shall be equipped with a handle assembly suitable for use in cleaner movement. The cleaner shall be freewheeling and easily transportable.
3.9 Attachments.
3.9.1 General. The cleaner shall be furnished with one dusting brush, one wall brush, one 14-inch (356 mm) minimum squeegee tool, one 12-inch (305 mm) minimum bare floor tool, one crevice tool, one wand assembly, and one 10-foot (3.05 m) minimum hose assembly. The automatic shutoff assembly and the necessary attachments for conversion from dry to wet pickup shall be furnished as accessories with each cleaner.
3.9.2 Tool construction. Tools and their assembly hardware shall be fabricated from synthetics, ferrous metals, or nonferrous metals. Tools and assembly hardware fabricated from ferrous metal shall be plated or furnished to resist corrosion and prevent marking. The brush and squeegee inserts shall be replaceable. The tools shall mechanically lock on the wand assembly or the hose assembly (if a metal conductor is employed). A friction fit between the tool and the hose is acceptable if the hose end is of rubber or synthetic.
3.10 Hose construction. The hose shall be fabricated from nonmarking materials impervious to attack from common cleaning solutions. The hose shall have a minimum inside diameter of 1-1/2 inches (38.1 mm), and a minimum length of 10 feet (3.05 m). a swivel coupling shall be provided on the hose end attaching to the cleaner. The use of a swivel coupling on the wand end of the hose shall be optional.
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