Aerzener - Model Series SI - Oil-Injected Single-Stage Screw Compressor

The advantages of AERZEN Screw Compressors Series SI at a glance:

• Maximum energy efficiency - even in partial load operation
• Reduced investment costs due to the extensive eligibility for subsidies based on the BAFA subsidy programmes
• Extended volume flow control range by integrated VFD technology
• Unrivalled reliability thanks to an innovative package design
• Secure use in extreme environmental conditions and with the most difficult requirements
• Maximum noise reduction thanks to innovative package design
• Reduced service costs due to extended maintenance intervals and roller bearings in PM motors being no longer required
• Compact design leads to a very small footprint

As diverse as your applications

Compressed air is omnipresent in industry and has become indispensable in many applications - be it in chemical/ petrochemical process technology, electronics and semiconductor production and many other areas.

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US Units: No

• Type of technology: Screw Compressors
• Design: Positive pressure
• Differential pressure (Δp): 5.500 to 13.000 mbar
• Volume flow: 17 to 726 m3/h
• Medium: Air, Neutral Gases
• Compression: Oil injected

• Volume flow: 17 to 726 m3/h
• Differential pressure (Δp): 5.500 to 13.000 mbar
• Medium: Air, Neutral Gases
• Compression: Oil injected

Outstanding energy efficiency

• Significant energy savings, achieved through extremely high efficiency in the compressor stages, in connection with the highly efficient PM motor, offering an energy efficiency of approx. 96% - even in partial load operation (class IE5-IE6)
• Innovative and robust screw compressor stages with new, highly efficient 4+6 profiles
• Extended turndown through the targeted use of VFD technology
• Optimised cooling of the compressor stage and motor thanks to double-walled cooling jackets in both units. Cooling and lubrication are realised by a common oil circuit for both the compressor and the motor
• The PM motor has a high efficiency even at low speeds. The requested quantity of compressed air is adjusted as required by means of a VFD. The harmonised combination of the high-quality drive train and the highly efficient compressor stage results in particularly efficient operation of the entire system
• The rotor of the PM motor is connected directly to the compressor shaft so that additional losses in the drive train are avoided

 High reliability and durability

• The compact design of the compressor stage and drive train, which nevertheless allows ideal accessibility, simplifies the maintenance of this unit. The PM motor does not require any anti-friction bearings at all and is therefore characterised by a particularly high level of service-friendliness
• Extended fields of application: option for secure use at particularly high or low ambient temperatures, through to use in extreme external conditions, such as installation in polar regions or in desert areas
• Increased bearing service life of up to 30,000 hours for compressor stages
• The permanent monitoring of the pressure and operating temperatures enables very reliable operation of the entire system
• The oil cooler included in the standard scope of supply sustainably increases the reliability of the package in extreme climatic conditions

Reduced maintenance effort

• Operation and maintenance exclusively from the operating and rear side
• PM motor technology eliminates the need for anti-friction bearing lubrication and bearing changes
• Easy transport of the entire, compact package selectively with pallet truck, fork lift truck or craneWhen delivered, the machine is already filled with oil; therefore, the machine does not need to be filled with oil as part of the commissioning process

Smart oil system

• Only one oil circuit is required for lubrication and cooling of the compressor and motor.
• The integrated oil pressure lubrication of the bearings enables bearing service lives of up to 30,000 hours

Intelligently reduced sound levels

• Minimum sound pressure levels of 70 dB(A) are achieved
• Depending on your requirements, you can choose between different options for sound insulation materials, silencer technologies and acoustic hood designs
• High-quality intake regulator for the reduction of intake losses and noise
• Sound technically optimised acoustic hood
• Thanks to the oil cooling jacket for the PM motor and the use of a centrifugal fan, the lowest noise levels are realised