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Sperre HLF2/77 air compressor



Sperre HLF2/77 start air compressor

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Data sheet

Serial number70173
kW3 @ 50 Hz - 3,45 @ 60 Hz see photo of electric motor type plate
RPM1420 @ 50 Hz - 1720 @ 60 Hz see photo of electric motor type plate
Volt230-240/380-420 - see photo of electric motor type plate
m³ /h, cubic meter per hour capacity9
Electric motor typeSiemens 1LA7107-4AA11
Working pressure BAR30
Test Pressure BAR45

More info

Sperre 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.

Technical Data
Performance50 Hz (30 bar)60 Hz (30 bar)
Speed (RPM)145011751750
Charging capacity (m³/h)*11913
Power requirement (kW)2,82,33,1
Heat dissipation (kCal/h)212917802399
*Charging capacity is from ambient pressure to final pressure. Tolerance +/-5%.
No. of cylinders2
Cylinder arrangement90° V
No. of compression stages2
Valve LPReed valve
Valve HPConcentric plate valve
Dimensions & weight
Cylinder diameter LP77 mm
Cylinder diameter HP50 mm
Stroke40 mm
Weight (compressor/el.motor)120 kg
Sump capacity1.8 litres
Lubrication systemSplash
Operating parameters
Maximum delivery pressure35 bar
Ambient temperature45°C
Normal working pressure LP2–4 bar
Normal temperature outlet airApprox. 25°C above ambient
Maximum speed1800 RPM
Set point thermo switch air alarm/stop75°C/80°C
RotationAnti-clockwise (looking at the drive end)
Safety valves set point10% above stage pressure
Max. noise level81 dBA