Lubricated Rotary Screw Compressors
L Series 7 - 11 kW
Fixed & Regulated Speed
Well known in the industry for quality and reliability, CompAir continuously develops and expands the L-Series to achieve optimum performance and efficiency and maximum flexibility. The wide range of screw compressors from 7 to 11 kW includes fixed and regulated speed models, high efficiency models and is available as airstation including receiver and refrigerant dryer.
The CompAir L Series 7–11 kW lubricated rotary screw compressors are designed for continuous industrial compressed-air applications such as CNC machining, fabrication, automotive workshops, packaging, painting, and general manufacturing.
Key highlights of the L07–L11 range:
Power range: 7.5–11 kW (10–15 HP)
Available in:
Fixed Speed (FS)
Regulated / Variable Speed (RS or VSD)
Pressure range: typically 5–13 bar
Flow capacity: approximately 0.41–1.87 m³/min depending on model and pressure
Configurations:
Base-mounted
Tank-mounted
AIRstation packages with integrated dryer and receiver
Main Models
Model Type Power Typical Flow Range
L07 Fixed Speed 7.5 kW up to 1.14 m³/min
L07RS Variable Speed 7.5 kW 0.45–1.13 m³/min
L11 Fixed Speed 11 kW up to 1.59 m³/min
L11RS Variable Speed 11 kW 0.53–1.58 m³/min
Fixed Speed vs Regulated Speed
Feature Fixed Speed Regulated / Variable Speed
Best for Constant air demand Variable air demand
Initial cost Lower Higher
Energy efficiency Standard Can save up to ~35% energy
Pressure stability Good Excellent
Running cost Higher under fluctuating loads Lower over time
Notable Features
In-house designed AirEnd for reliability
IE3 high-efficiency motors
Automatic belt tensioning system
Synthetic lubricant with oil-change intervals up to 8, 000 hours
Delcos Pro controller with:
pressure and temperature monitoring
service alerts
Modbus RTU communication
remote start/stop
Compact footprint with integrated dryer/receiver options
Typical Applications
CNC machines
Pneumatic tools
Laser cutting support
Sandblasting
Automotive workshops
Textile and packaging industries
Small and medium manufacturing plants
Benefits
Engineering Excellence
Compressors are more than just a financial investment, they are a key component in ensuring that manufacturers, processors and operators receive consistent, high quality low cost air. The screw compression element is the heart of the compressor and therefore CompAir keeps the design and manufacture in-house, using the latest CNC rotor grinding machinery, coupled with online laser technology. The resulting reliability and performance ensure that operating costs will remain low throughout the compressor’s life.
Benefits
Compressor base mounted
Complete package including compressor, dryer and receiver
Small carbon foot print (by mounting the components on the receiver the footprint is reduced up to 55%)
In-house AirEnd
Highly efficient motors
Easy maintenance
Wide regulation range
Design
A Design Concept Based on Reliability and Flexibility
Fully Integrated Airend
The advanced design of the high efficiency airend allows operation at low rotational speeds, and consequently lowers the energy costs. The innovative integrated design, including oil separation, oil filter and thermostatic valve, reduces the number of external hoses and components offering excellent reliability.
Combined Air / Oil Cooler
Equipped with a bypass for rapid warm-up and control of the oil temperature, reducing wear, eliminating condensate in the compressor system and providing low air discharge temperature.
High Efficiency Electric Motor
The compressors are equipped with an energy saving IE3 electric motor.
Automatic Belt Tensioning System
The maintenance-free system provides automatic and accurate belt tension and extends the belt life.
Factory-Filled Synthetic Lubricant
Reduces service costs by extending the oil change period to up to 8, 000 hours.
Low Noise Levels
Allows the compressor to be placed at the point of use.
Up to 45°C Ambient Temperature
Reliable operation, even in challenging environments.
Controller
Delcos Pro Compressor Controller
The control system ensures reliable operation and protects the investment by continuously monitoring operational parameters. The Delcos Pro also has the capability to have programmable inputs and outputs, control additional equipment as well as providing the following features in clear readable text:
Discharge / line pressure display
Air / oil temperature display
Total hours run and under load
Service due indicator
Enhanced fault log monitor
Real time clock
Timer controlled stop/start
Remote start/stop
Auto restart after power failure
Second pressure setting
Status indication
RS485 - Modbus RTU
