Model HL2/77A 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)* 26 32
Power requirement (kW) 6,8 8,6
Heat dissipation (kCal/h) 5263 6656
*Charging capacity is from ambient pressure to final pressure. Tolerance +/-5%.
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 80 mm
Weight (compressor/el.motor) 260 kg
Oil type Synthetic oil (see approved list)
Sump capacity 4 litres
Lubrication system Splash
Operating parameters
Maximum delivery pressure 40 bar
Ambient temperature 45°C
Normal working pressure LP 2–4 bar
Normal temperature outlet air 15°C–30°C above ambient temperature
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 5–10% above stage pressure
Max. noise level 84 dBA
Max. vibration level 40 mm/s-RMS