Air compressor

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Sperre HL2/90 air Compressor

Reference: 7225-sperre-hl2-90

Condition: Used

Manufacturer	Sperre
Model	HL2/90
Serial number	90549
kW	11 kW @ 50 Hz / 12,6 kW @ 60 Hz
RPM	1460 rpm @ 50 Hz / 1765 rpm @ 60 Hz
Class	DNV
Volt	220380 / 440
HZ	50/60
m³ /h, cubic meter per hour capacity	34
Electric motor type	Siemens 1LA5 163-4SA20-Z
Working pressure BAR	30
Test Pressure BAR	45

Model HL2/90 is a two stage 90º V-compressor. ( typical data )

Cylinders and compressed air coolers are air-cooled. Cooling air is supplied by a well-dimensioned fan.

Bearings and cylinders walls are splash lubricated.

The compressor and motor are normally supplied mounted together on a foundation, and connected by means of a heavy-duty flexible coupling.

Technical Data
Performance	50 Hz (30 bar)		60 Hz (30 bar)
Speed (RPM)	975	1450	1175	1750
Charging capacity (m³/h)*	24	35	28	40
Power requirement (kW)	5,6	8,2	6,5	10,3
Heat dissipation (kCal/h)	4334	6346	5031	7972

*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
Cooling system	Direct driven axial fan
Valve LP	Reed valve
Valve HP	Concentric plate valve
Dimensions & weight
Cylinder diameter LP	90 mm
Cylinder diameter HP	50 mm
Stroke	80 mm
Weight (compressor/el.motor)	255 kg

Lubrication
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	3–4 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