CompAir L45 to L55
Oil-lubricated screw compressors 45 to 55 kW – the new generation, single- and two-stage
A completely redeveloped series: the L45 to L55 are available as single- and two-stage models, with fixed or variable speed. They are more economical, more powerful and exceptionally compact.
The two-stage models are significantly more efficient than single-stage compressors but need no more space: the footprint is only 1.4 m², up to 40% less than the previous series.
Motor power
45 to 55 kW
Pressure
5 to 13 bar
Flow rate
1.6 to 11 m³/min
Footprint
1,4 m²
Why the new generation?
At its heart is the two-stage FourCore airend: two stages with oil filter, thermostatic valve and check valve in one housing. Fewer hoses and pipes mean fewer leaks, fewer spare parts and simpler maintenance.
The variable speed models have oil-cooled IE5 permanent magnet motors, the fixed-speed models IE4 motors. With heat recovery, even the motor heat can be used.
- Single- and two-stage, fixed or variable speed
- Footprint of only 1.4 m²
- Two-stage FourCore airend, developed in Germany
- IE5 permanent magnet motor (variable) or IE4 (fixed)
- Fewer pipes, fewer leaks, simpler maintenance
- Delcos XL SE controller with touchscreen and web server
Control and monitoring
The Delcos XL SE with high-resolution touchscreen optimises the compressor for the actual operating conditions and protects it against condensate. It can control up to three further compressors as base load and is prepared for energy optimisation with Ecoplant.
- Touchscreen, self-explanatory
- Integrated sensors and web server
- Base load selection for up to three further compressors
- High standard of cybersecurity
- Prepared for Ecoplant and Helix
Product images
Technical data
L45x – L55FC with fixed speed
| Compressor model | Operating pressure | Drive motor | Flow rate ¹⁾ | Sound pressure level ²⁾ | Weight | Dimensions L × W × H |
|---|---|---|---|---|---|---|
| [bar g] | [kW] | [m³/min] | [dB(A)] | [kg] | [mm] | |
| L45x | 7,5 | 45 | 8,5 | 70 | 1035 | 1448 × 968 × 1806 |
| 10 | 45 | 7,4 | 71 | 1038 | 1448 × 968 × 1806 | |
| L45FC | 7,5 | 45 | 9,3 | 70 | 1075 | 1448 × 968 × 1806 |
| 10 | 45 | 8,3 | 70 | 1075 | 1448 × 968 × 1806 | |
| 13 | 45 | 7,4 | 70 | 1075 | 1448 × 968 × 1806 | |
| L55x | 7,5 | 55 | 10,1 | 70 | 1070 | 1448 × 968 × 1806 |
| 10 | 55 | 9 | 71 | 1070 | 1448 × 968 × 1806 | |
| L55FC | 7,5 | 55 | 11,1 | 71 | 1110 | 1448 × 968 × 1806 |
| 10 | 55 | 10 | 71 | 1110 | 1448 × 968 × 1806 | |
| 13 | 55 | 8,9 | 71 | 1110 | 1448 × 968 × 1806 |
L45xRS – L55FCRS with variable speed
| Compressor model | Operating pressure | Drive motor | Flow rate ¹⁾ [m³/min] | Sound pressure level at 100% load ²⁾ | Weight | Dimensions L × W × H | |
|---|---|---|---|---|---|---|---|
| [bar g] | [kW] | Min | Max | [dB(A)] | [kg] | [mm] | |
| L45xRS | 5 – 10 | 45 | 1,6 | 8,9 | 69 | 950 | 1448 × 968 × 1806 |
| L45FCRS | 6 – 10 | 45 | 2,5 | 9,25 | 69 | 990 | 1448 × 968 × 1806 |
| 6 – 13 | 45 | 2,5 | 9,1 | 69 | 990 | 1448 × 968 × 1806 | |
| L55xRS | 5 – 10 | 55 | 1,6 | 10,5 | 70 | 950 | 1448 × 968 × 1806 |
| L55FCRS | 6 – 10 | 55 | 2,5 | 11,07 | 69 | 990 | 1448 × 968 × 1806 |
| 6 – 13 | 55 | 2,5 | 10,94 | 69 | 990 | 1448 × 968 × 1806 | |
¹⁾ Data measured and stated in accordance with ISO 1217, Ed. 4, Annex C & Annex E, within the tolerances given below: inlet pressure 1 bar a, inlet temperature 20 °C, relative humidity 0% (dry).
²⁾ Free-field sound measurement in accordance with ISO 2151, tolerance ± 3 dB.
Data from CompAir. Flow rate to ISO 1217, Annex C or E. We will be happy to determine with you which version and pressure are right for your system.
Frequently asked questions
What are the benefits of a two-stage compressor?
The air is compressed in two steps, which takes less energy than doing it in one. In the new generation, the two-stage machine fits into the same housing as a single-stage one.
Fixed speed or variable speed (RS)?
A fixed-speed compressor is most economical when it runs at a steady load. If your compressed air demand fluctuates during the day, a variable speed RS compressor continuously adjusts its delivery and saves electricity. On request, we measure your demand with a compressed air analysis and tell you what is worthwhile.
Can the waste heat be used?
Yes. Up to 94 % of the energy consumed turns into heat. With heat recovery you can use it to heat water or rooms. More on this under Heat recovery.
Who maintains the compressor?
We do. As the CompAir partner for north-western Switzerland, we maintain and repair your system with genuine spare parts and service kits. If your compressed air supply fails, you can reach our on-call service on 062 552 00 88.
Downloads
Which compressor is right for your business?
Compressed air demand, pressure, operating times and available space determine the choice. We advise you, supply the compressor with air treatment, install the system and take care of service.