FLEX series screw compressor – powerful mini compressors for quiet operating environments

Performance class: 5.5 – 30 kW

Flexible, zero-compromise compressed air system

Compact, powerful and quiet as a whisper
Speed control and direct drive
Integrated single-shaft solution
SCD technology

The speed-controlled, directly driven compressors of the FLEX series are based on cutting edge research and technology and are used wherever compressed air is to be generated by a small, compact and extremely quiet system. Because of the integrated single-shaft solution, the sound level of these small screw compressors is around 60 dB(A), allowing them to be used directly in the workplace.

Picture of FLEX series with single shaft solution — The "integrated single shaft solution" from ALMiG (picture corresponds to FLEX 6 - 30 model)

Market analyses show that on average compressors only have a utilisation rate of around 50–70 %. The maximum delivery volume is, however, only needed during peak times.
The integrated ALMiG SCD technology therefore delivers an integral drive concept with maximum cost-effectiveness for Speed Control and Direct drive. SCD technology, the benefits of which come to the fore in partial load applications, allows you to achieve an energy saving of up to 35% through:

Speed control
Constant mains pressure, stepless from 5 - 13 bar
Extremely good system efficiency
No start-up changeover power peaks
No expensive idle times

Overview of variants

FLEX "PLUS" variant with refrigerant dryer built in underneath

FLEX "O"-type variant with built-in refrigerant dryer and filtersystem underneath

The screw compressors of the FLEX series are available in various variants with volume flows of between 0.53 – 3.47 m³/min thanks to their modular concept:

FLEX standard variant
FLEX receiver variant
FLEX "PLUS" variant with refrigeration dryer fitted underneath
FLEX "PLUS" variant with receiver*
FLEX "O" variant with refrigeration dryer and filter system for generating oil-free compressed air
FLEX "O" variant with receiver*

Details

Compressor
- Newly developed rotor profile for maximum efficiency
- Large control range, very good overall efficiency
SCD motor
- Robust drive motor, speed-controlled
- IP 55 ISO F protection class
SCD direct drive
- Compressor shaft is also the motor's rotor
- Power is transferred in full without a coupling element
- Improved reliability as motor mounting not needed
SCD frequency converter
- The integrated power pack; EMC guidelines met of course
Separation system
- Outstanding compressed air quality from proven multi-stage separation
Radial fan
- Powerful
- Efficient
- Quiet
- High residual thrust for connecting channels later on
Unit cooler
- Efficient cooler for minimum coolant / compressed air outlet temperatures
Air Control
- The intelligence of the compressor: it thinks, monitors, documents. Can be connected to the Internet, making all conceivable communication possible.

Potential energy savings

Potential for saving energy

Thanks to the integrated single-shaft solution and SCD technology, the compressors of the FLEX series offer zero-compromise, cutting-edge technology:

Volume flow can be adapted exactly to meet compressed air requirements
No switching cycles or resultant expensive idle times
Energy-saving soft start without current peaks
Operating pressure can be freely selected between 5–13 bar in 0.1 bar steps
The most compact compressor imaginable – and access for service and maintenance is ideal
One speed-controlled FLEX can instantly make up to eight large compressors more cost-effective in an intelligent ALMiG "master-slave network"