What does it mean for a vacuum cleaner to be NFPA-652 compliant?
The standard identifies 7 specific requirements:- The materials of construction must be conductive, except in a few specific circumstances.
- Hoses must be conductive or static dissipative.
- All conductive components, including wands and attachments, must be bonded and grounded.
- Dust-laden air must not pass through the fan or blower.
- Electrical motors must not be in the dust-laden air stream unless listed for Class II, Division I, locations.
- Paper filter elements aren’t allowed for picking up liquids or wet materials.
- Vacuum cleaners used for metal dusts must meet the requirements of NFPA 484, which is the standard for combustible metals.