The industrial compressor LW 720 E is suitable for breathing air applications and for large capacities.

Low speed ensures continuous operation for long service intervals and reduced maintenance costs. The 4-stage compressor block is mounted on a painted steel panel and is designed for maximum operating pressure of 420 bar.

The compressor unit comes fully wired with star/delta start system and includes 2x 2.3 litre breathing air filter console for wall mounting.

Specifications
  • Electro motor (Standard: 400V, 3 phase, 50Hz)

  • Painted steel frame (RAL 6026)

  • Painted steel fan guard (RAL 7004)

  • Automatic condensate drain

  • Automatic stop at final pressure

  • Inclusive a remote control box for wall mounting

  • Main-, Start/Stop- and condensate test buttons, as well as emergency stop switch

  • Phase monitoring c/w shut down at wrong direction of rotation

  • Hour counter

  • Oil pressure gauge

  • Intermediate pressure gauges

  • Oil pressure monitoring c/w auto shut down

  • High pressure outlet with 1500 mm hose

  • Motor protection switch

  • Pressure maintaining and non return valve

  • All pistons c/w steel piston rings

  • Low pressure oil pump and filter

  • Oil- / Water separators in stainless steel

  • Safety valves after each stage

  • 4 concentric suction/pressure valves

  • Filling pressure of your choice (200 or 300 bar)

  • Inclusive 2 x 2.3 l filter console for wall mounting

  • Breathing air purification in accordance to EN 12021

Options
  • Auto start system

  • Oil temperature display with auto shut down

  • Cylinder head temperature monitoring with auto shut down

  • 0.8 ltr. Prefilter (Enlarged the lifetime of the filter by approx. 5 hours)

  • Puracon filter monitoring (Auto shut down also available)

  • ECC control in remote control box

  • Power cable and plug

  • Block heating device

  • 420 bar Version

  • Special voltages / frequencies on request


Technical Data

LW 720 E

 
Type:Air cooled piston compressor
Capacity [l/min] / [Nm3/h] / [cfm]:720 / 43.2 / 25.4
Max. Pressure [bar]:350 / 420
RPM [1/min]:1100
No of cylinders / No of stages:4 / 4
Prime mover type:E-Motor / 400V / 3 Phasen / 50 Hz
Drive power [kW] with 50 Hz / 60 Hz:18.5 / 22.2
Cooling air req. [m3/h] with 50 Hz / 60 Hz:5550 / 6660
Lubrication type:Oil pump + Splash oil
Oil capacity [l] / Oil pressure [bar]:4.2 / 4.0 (+/- 0.5)
Operating temperature [°C]:+5°C to +45°C
Filter capacity [m3 at +20°C]:2400 (approx. 56 h)
Dimensions W x D x H [mm]:1670 x 770 x 1170
Weight [kg]:approx. 600
Noise level (measured at 1 m) [dB]:88