Model HLF2/77 is a two stage 90º V-compressor.

Cylinders and compressed air coolers are air-cooled.

Bearings and cylinders walls are splash lubricated. The compressor and motor are normally supplied mounted together and connected by means of a heavy-duty flexible coupling.

Both electrical and diesel engine driven versions are available.

Technical Data
Performance 50 Hz (30 bar) 60 Hz (30 bar)
Speed (RPM) 1450 1750
Charging capacity (m³/h)* 11 13
Power requirement (kW) 2,8 3,1
Heat dissipation (kCal/h) 2129 2399
*Charging capacity is from ambient pressure to final pressure. Tolerance +/-5%.
Design
No. of cylinders 2
Cylinder arrangement 90° V
No. of compression stages 2
Cooling Air
Valve LP Reed valve
Valve HP Concentric plate valve
Dimensions & weight
Cylinder diameter LP 77 mm
Cylinder diameter HP 50 mm
Stroke 40 mm
Weight (compressor/el.motor) 120 kg
Lubrication
Sump capacity 1.8 litres
Lubrication system Splash
Operating parameters
Maximum delivery pressure 35 bar
Ambient temperature 45°C
Normal working pressure LP 2–4 bar
Normal temperature outlet air Approx. 25°C above ambient
Maximum speed 1800 RPM
Set point thermo switch air alarm/stop 75°C/80°C
Rotation Anti-clockwise (looking at the drive end)
Safety valves set point 10% above stage pressure
Max. noise level 81 dBA