
CompAir L30 to L37, e, RS
Oil-lubricated screw compressors 30 to 37 kW – fixed and variable speed
This versatile 30 to 37 kW series can be configured to your efficiency requirements. The new e and eRS models have a larger compression stage and an IE4 motor.
Compared with the standard models, they are up to 8% more efficient and deliver up to 8% more air. The extra cost is often recovered in less than a year.
Motor power
30 to 37 kW
Pressure
5 to 13 bar
Flow rate
1.33 to 7.35 m³/min
Why the L30 to L37?
Electricity makes up the largest share of a compressor’s costs. The enlarged compression stage of the e models, made in Germany, works with an optimised rotor speed and larger inlets and outlets; this saves up to 6% energy and extends service life.
The RS models continuously adjust their delivery to demand. All fixed-speed models are available with a built-in dryer.
- e models with IE4 motor and larger compression stage
- Up to 8% more efficient, up to 8% more flow
- Large-area aftercooler for low discharge temperatures
- Separator with less than 3 mg/m³ residual oil
- Quiet, thermostatically controlled fan
- Victaulic couplings for tight, easy-to-service connections
Delcos XL SE7 controller
The high-resolution 7-inch touchscreen is organised into five main menus and is self-explanatory. The controller monitors all operating values, controls the fan and dryer and can be accessed remotely via the built-in web server and iConn.
- Second pressure band
- Integrated fan and dryer control
- Fault memory and SD card
- Remote control via programmable inputs
- Base load sequencing as an option
- iConn and web server as standard
Product images



Technical data
L30 – L37 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] | |
| L30 | 7,5 | 30 | 5,75 | 67 | 887 | 1722 × 920 × 1659 |
| 10 | 30 | 5,01 | 67 | 887 | 1722 × 920 × 1659 | |
| 13 | 30 | 4,27 | 67 | 887 | 1722 × 920 × 1659 | |
| L37 | 7,5 | 37 | 7,00 | 68 | 912 | 1722 × 920 × 1659 |
| 10 | 37 | 6,17 | 68 | 912 | 1722 × 920 × 1659 | |
| 13 | 37 | 5,30 | 68 | 912 | 1722 × 920 × 1659 |
L30ᵉ – L37ᵉ efficiency models 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] | |
| L30ᵉ | 7,5 | 30 | 6,00 | 67 | 964 | 1722 × 920 × 1659 |
| 10 | 30 | 5,01 | 67 | 964 | 1722 × 920 × 1659 | |
| L37ᵉ | 7,5 | 37 | 7,35 | 67 | 989 | 1722 × 920 × 1659 |
| 10 | 37 | 6,28 | 67 | 989 | 1722 × 920 × 1659 |
L30RS – L37RS with variable speed drive
| Compressor model | Min-max pressure | Drive motor | Flow rate ¹⁾ min – max | Sound pressure level ²⁾ at 70% load | Weight | Dimensions L × W × H |
|---|---|---|---|---|---|---|
| [bar g] | [kW] | [m³/min] | [dB(A)] | [kg] | [mm] | |
| L30RS | 5 – 10 | 30 | 1,33 – 5,53 | 66 | 925 | 1722 × 920 × 1659 |
| L37RS | 5 – 13 | 37 | 1,44 – 6,90 | 67 | 952 | 1722 × 920 × 1659 |
L37ᵉRS – efficiency models with variable speed drive
| Compressor model | Min-max pressure | Drive motor | Flow rate ¹⁾ min – max | Sound pressure level ²⁾ at 70% load | Weight | Dimensions L × W × H |
|---|---|---|---|---|---|---|
| [bar g] | [kW] | [m³/min] | [dB(A)] | [kg] | [mm] | |
| L37ᵉRS | 5 – 8 | 37 | 2,44 – 7,15 | 67 | 1029 | 1722 × 920 × 1659 |
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 do e and RS mean?
“e” stands for the premium efficiency models with a larger compression stage and IE4 motor, “RS” for variable speed drive. “eRS” combines both.
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.
What warranty is available?
With the Assure programme, CompAir extends the warranty as long as maintenance is carried out regularly with original parts. We will be happy to explain the exact conditions for your model.
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.