3997 Industrial Heavy Duty Vacuum Cleaner

Designed for heavy-duty continuous use, the 3997 heavy duty vacuum cleaner features a three-phase regenerative blower, oversized filter area and large collection capacity to guarantee long periods of uninterrupted operation. A control panel features an on/off switch, manometer and automatic phase correction device to make the 3997 heavy duty vacuum cleaner reliable and easy-to-use.

Features and Benefits

  • Oversized main filter provides more surface area for filtering. Guarantees extended filter life and resists premature clogging
  • Manometer monitors the suction performance and turns off the machine if the filter becomes ineffective
  • Unique release lever lowers the container bottom for easy access to collection container
  • Upstream and downstream HEPA filter available for collection of ultrafine particles and toxic debris
  • Highly maneuverable design and easy to access collection container
  • Wide variety of accessories available, including stainless steel container and components and various filter and hose materials for special applications
3997 heavy duty vacuum cleaner by Nilfisk
Voltage 460 / 575 V
Power 30.8 HP
Waterlift 176 in. H2O
Airflow 780 CFM
Current 42 / 36.8 amps
Container Capacity 46 gallons
Dimensions 78.7 x 35.4 x 84.6 in.
Weight 1,438 lb.
Sound Pressure Level 79 dB(A)

Pharmaceutical Brochure 1.37 MB 61505 downloads


3997 Accessories 1.05 MB 1952 downloads


3707, 3907 & 3997 Product Sheet 173.81 KB 20666 downloads

    Instruction Manuals

    3997 Spare Parts Manual 544.05 KB 1864 downloads

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      Call: (800) 645-3475   Email: questions@nilfisk.com

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