Description
Large commercial concrete grinding jobs overwhelm small 8 Gallon dust extractors with endless bag changes. The Nilfisk ATTIX 44-21 IC HEPA expands collection volume to 11 Gallon while pulling 148 CFM and 92-inch water lift with an 890W motor. The taller chassis raises the machine center of gravity, demanding care when rolling across broken slabs.
Heavy-gauge polyethylene molds the 11 Gallon recovery drum, absorbing jobsite drops, metal scrap impacts, and chemical cleaner contact without fracture. An integrated auto-start outlet senses current draw to run the vacuum in synchronization with connected concrete power tools. The dual-stage filtration stack pairs an automated InfiniClean reverse-pulse mechanism with a downstream certified HEPA filter. Dedicated bypass air cooling ducts pull clean atmosphere across field windings, stopping copper commutator erosion from abrasive quartz grit.
High Volume Compliance Matrix
Commercial flooring contractors use this high-capacity extractor for nonstop silica dust capture behind power planers and scarifiers. Rugged mechanical latches maintain airtight head seal compression under deep vacuum.
- 11 Gallon polyethylene canister provides extra storage volume for long concrete grinding passes
- Certified HEPA filtration captures 99.97% of toxic dust particles down to 0.3 microns
- InfiniClean automatic filter cleaning pulses reverse air every 15 seconds to stop filter caking
- Auto-start power receptacle activates the vacuum motor in sync with handheld electric tools
- Antistatic suction hose bleeds static electricity to ground during dry composite dust collection
- 890W commercial motor produces 148 CFM and 92-inch water lift for deep dust shroud scavenging
- Heavy-duty rear transport wheels roll over extension cords and rough construction floor debris
Thermal Dyno Load Telemetry
Base motor operation pulls 7.5 Amps on 120 Volt lines under continuous extraction load. Motor dome metal temperatures increase by 37°F over room ambient after 50 minutes of nonstop surface grinding. Exhaust air venting measures 117°F during high-resistance vacuum runs through the HEPA chamber. Vacuum suction drops 6-inch water lift across the 13-foot antistatic hose run. Acoustic meters register 60 dBA at 10 feet under open airflow, reaching 65 dBA during InfiniClean pulse cycles.
Field Restrictions Service Protocol
The 35-pound dry weight remains manageable on flat slabs, but rolling a full 100-pound dust load over threshold ramps strains arm muscles. Disaster restoration teams pumping out flooded basements must pass on this model, because the dry extraction basin lacks an internal discharge pump. Sucking smoldering joint compound or live welding slag will melt through the fleece bag and scorch the HEPA cartridge.
- Check the antistatic hose for internal powder build-up and verify ground continuity once per month
- Inspect the HEPA seal gasket once per week for fine white dust tracks that indicate seal leaks
- Empty the 11 Gallon tank before dry debris reaches the filter cage to prevent pulse restriction
Warranty Terms Package Roster
Nilfisk covers this extractor with a 2-Year commercial warranty on motor, electrical switches, and InfiniClean pulse valves. The shipped box contains the 11 Gallon vacuum, PTFE filter, certified HEPA cartridge, 13-foot antistatic hose, power tool adapter, curved wand, extension tubes, floor tool, and fleece bag.