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Screw compressor open type

Product line overview
Open-drive screw compressors ATS series is designed to provide a high cooling capacity, with or without economizer, operating with any HFC, HCFC, HFO refrigerant and also Ammonia.
The main use is in marine/industrial cooling and process cooling, but they have also good performance in heat pump and air conditioning systems. The compressors can operate in parall installation with common oil separator.
All compressors fit a high quality mechanical sealer suitable to all refrigerants, the operation is silent and vibration-free, besides, the ATS can be easily coupled to standard IEC electric motors, by means of optional coupling joints for direct connection.

• Wide operational field
• For HFC, HCFC, HFO blends and Ammonia
• Low noise and no vibrations at all operating conditions
• Step capacity control
• Easy installation and accessibility
• Minimal and essential maintenance
• High quality mechanical sealer suitable to operate with any refrigerant
• Direct coupling with any IEC electrical motor
• Wide selection of accessories
• 2-year standard warranty


For standard refrigerants
16 models with nominal displacement from 120 m3/h to 360 m3/h (2900 rpm) and a speed range from 1500 to 4500 rpm.
Two configurations guarantee the maximum operating efficiency:
ATSH: low compression ratios, for MT and HT applications.
ATSL: high compression ratios, for LT applications.

  • Models: 16
  • Displacement: 120 - 360 m3/h
For natural refrigerants
16 models with nominal displacement from 120 m3/h to 360 m3/h (2900 rpm) and a speed range from 1500 to 4500 rpm.
These compressors are ready for use with the economizer.
The compressor can be operated with standard IEC electric motors commercially available; coupling joints are available for direct connection.
Two configurations are available to guarantee the maximum efficiency:
ATSH: low compression ratios, for MT and HT applications.
ATSL: high compression ratios, for LT applications.

  • Models: 16
  • Displacement: 120 - 360 m3/h

RSH - Patented Capacity Control

Frascold's patented Reduced SuctionHead technology allows our reciprocating compressors to run unloaded indefinitely. Unlike standard capacity control, RSH capacity lets the compressor run without overheating while energized. This revolutionary feature provides application flexibility while reducing heat, vibration and damage from unloading stress.

  • 2,4,6 and 8 Cylinders
  • Reduced wear and vibration
  • Run unloaded indefinitely
  • Efficient & reliable unloading
  • Frascold exclusive solution
  • Retrofit existing compressors
  • Selection Software
    Selection Software

    Our advanced FSS.3 selection software helps you accurately choose the right compressor combination for your application. Refine your results with the Check Calculation feature to maximize system performance.


    We'd love to hear from you

    For application support or questions about our products, send us a message.Our experienced staff is one of our gratest assets, and they are ready to help. To find out why Blue Is Better, contact us today.