Nilfisk 3997

Industrial Vacuum Cleaners - 39973997

Power for results

For very heavy duty and continuous service. This 3 phase vacuum can be connected to CVS used in various sectors as agricultural food production or metal working industries. Many options are available for heavy material and vast quantities. The electric filter shaker is fitted as standard.

The 3997 has a 22 Kw, three phase, aluminium casting induction motor directly driven to the fan. The self cooling suction unit can work continuously, without the need of any maintenance.
The suction unit is run by an electric box with a star-delta-star starting, housed in the rear casing and power is supplied by a 9m long, 4 core cable. The on/off switches are within a control panel, in the upper part of the rear casing, this also houses the timer and manometer which enables visual control of the filter condition.

An external electric filter shaker enables easy and efficient filter cleaning. The “L” class star filter is mounted on the machine as standard and guarantees efficient filtration. A cyclone plate is incorporated into the filter chamber and aids filter protection.

In case absolute filtration is required an upstream or downstream HEPA filter is available.

The steel waste bin with a capacity of 175 litres is fitted with castors and is easily removed by an exclusive, highly practical handle release system.

The machine body is made of heavy duty tubular steel and painted with epoxy powders, to ensure robustness and a longer lifetime. A useful tool basket is mounted on the rear casing. The head of the filter housing is easily detachable by means of 4 hooks.
Two guides are located underneath to help move the machine with a forklift.
The stability of the machine is ensured by the position of the suction unit placed at the bottom of the casing. This model is available with more depression (3997) or with more air flow (3997W). With Star filter or Cartridges

  • Heavy duty vacuums
  • Continuous running
  • Reduced maintenance
  • Greater filter efficiency
  • Highly effective systems for maintaining filter efficiency
  • High suction levels
  • Filter monitoring
  • Easily removable container
  • Control panel
  • Integral electrical panel
  • Large wheels
  • Brackets for bin lifting
  • Accessories carried in tool basket
  • Absolute filter
  • Stainless steel version

Technical Specifications

Parameter Units 3997 3997C 3997W 3997WC
Voltage (50 Hz)

V

400

400

400

400

Power rating

kW

20

20

20

20

Noise level dB(A)

79

79

78

78

Protection

IP

55

55

55

55

Insulation Class

F

F

F

F

Container capacity

L

175

175

175

175

Inlet (diameter)

mm

100

100

120

120

Max vacuum without limiting valve mbar

600

600

430

430

Max vacuum with limiting valve mbar

440

440

250

250

Maximum air flow rate(without hose and reductions) L/min’ 18,600 18,600 36,000 36,000
Allowed hoses

mm

100

100

120

120

Main filter surface

m2

6.6

11

9.8

11

Downstream absolute “H” filter surface – HEPA 14 according to MPPS method

(EN 1822)

 

2

 

29

 

29

 

29

 

29

Standard version weight

kg

650

697

650

697

Downstream absolute filter version weight

kg

686

733

686

733