FRASCOLD S.p.A.

CO2 semi-hermetic reciprocating compressors

SK2 COMPRESSORS FOR SUB-CRITICAL CO2-55 bar
To fulfil the very demanding requirements of CO2 applications, this range employs the very best in manufacturing producing an extremely sturdy design with top class materials. This line of Frascold compressors, SK2, is optimized for subcritical cascade systems and offers several advantages in supermarket and industrial cooling applications.
These compressors are designed for operations up to 55 bar on discharge side (15°C condensing temperature) and are equipped as standard with safety valves for safe operations.
Compressors are charged with a special synthetic oil with high resistance to thermal loads and proper solubility and miscibility with CO2.

TK COMPRESSORS FOR TRANS-CRITICAL CO2-130 bar
A range of models suitable for the new refrigeration and heating technologies using CO2 refrigerant.
Urged by the growing consciousness of environmental protection and frequently supported by governments in many countries, these applications are more and more requested.
For their special characteristics, TK compressors are suitable to run at high pressure up to 130bar on discharge side, they are equipped with safety valves and connections, on suction and discharge valves, for stainless steel piping.
They are charged with special synthetic PAG oil with high resistance to thermal loads, solubility and miscibility with CO2.

Open drive screw compressors

The new generation of Frascold ATS screw compressors are suitable to operate with HFC and R717 (NH3) refrigerants in a wide range of applications in industrial refrigeration, process systems, air conditioning, and heat pumps with a range of refrigerating capacities between 25 and 560 kW (2900 min-1)

Distinctive technical features:

• Universal application: R134a, R404A, R507A, R407C, R22 eR717 (NH3)
• Asymmetrical screw profiles with optimised dimensions to guarantee higher performances
• Mechanics conceived for safe operation without frequent maintenance
• Compact design with reduced overall dimensions and ease of installation
• Bearings with a high rigidity and precision, resistant to the combination of radial and axial loads, design to operate also with R717(NH3). Their design protects screws from any counter-rotations which could occur during system shut-downand include a special cage for noise reduction and higher load resistance for a longer operative life.
• Direct coupling with the motor
• Efficient capacity control
• Discharge gas temperature sensor
• Designed for economizer operation
• Low noise level and no vibrations

Semi-hermetic reciprocating compressors

Sturdy, compact, high performance and with very low operating costs compared with competitors products, a perfect project solution with the most advanced technologies to cover the full range of applications, both with natural or chemical refrigerants, designed to significantly reduce the impact on the environment.
Starting from V 15 59 Y model, Frascold compressors employ its well tested system of forced lubrication as standard, equipped with electronic pressure switch protection.
All models are equipped with Enhanced electronic protection including diagnostic and communication functions for a comprehensive reliability of the system.
Nowadays all compressors are designed to be controlled by “inverter technology”.

Reciprocating compressors are available in different versions to satisfy any customer need:

• Single stage compressors for traditional HFC refrigerants
• ECOinside range optimized for best efficiency with R134a in MT applications
• Two Stages compressors for high efficiency in deep freeze applications
• Twin compressors for extended capacity and better capacity regulation
• ATEX certified compressors for Hydrocarbons and/or dangerous environment

Twin screw compressors CXH, CXW, CXIT, CFE

Today Frascold can offer to the market an extremely wide selection of semi-herametic screw compressors.
The models are divided in different series for their application optimisation and for their technical characteristics:
CXH and CXW RANGE
These new ranges of compact screw compressors are optimised for use in water chillers, climate control systems and heat pumps, apart from the different applications of industrial cooling.
CXH is dedicated to air cooled condensation while CXW technical charcteristics are optimised for lower condensing temperatures tipical of water cooled condensation.
They are designed to operate reliably and for long periods with very limited maintenance.
They have high COP values at full and partial load, granting better ESEER/IPLV of the machine where they are installed, and incorporate advanced technical solutions dedicated to achieve very low noise levels if compared with equivalent products on the market.
Their main characteristics are: the exclusive and innovative N-profile of their screws, the original three stage oil separator, the efficient and safe oil management system, the generous dimensioning of bearings with very high resistance to high pressures, the sophisticated and stable slide valve for capacity control that ensures an extremely high efficiency also at partial load, the electronic protection devices with diagnostic functions, the optimal motor selection and the efficient oil cooling system.
CXIT RANGE
The basic concept of the Frascold CXIT Inverter Technology compact screw compressors with built-in frequency control is to allow their safe, efficient and versatile operation in a frequency range from 30 to 70 Hz (expandable to 20-80 Hz).
These new compressors are fitted with a variable frequency drive (VFD) to control the capacity and match the application requirements at different operating conditions in chillers, free-cooling units, heat pumps, accumulation units with air or water condenser.
Their distinctive technical features includes, Screw profile with optimised geometry for application with R134a, Electric motor optimised for operation with variable frequency drive, an innovative configuration of the bearings to protect screws during counter-rotations and incorporating a special cage which reduce noise levels and increase lifetime, the high efficiency three stages integrated oil separator
The pre-programmed and pre-configured variable frequency drive, built into the compressor and equipped with an exclusive liquid refrigerant cooling system with automatic temperature control, includes full built-in protection system and grant up to 40% COP improvement at partial load (compared with slide valve capacity control).
CFE RANGE
These new ranges of screw compressors has been designed and optimised for use in applications with flooded evaporator.
They are designed to operate reliably and for long periods with very limited maintenance.
They have high COP values at full and partial load, granting better ESEER/IPLV of the machine where they are installed, and incorporate advanced technical solutions dedicated to achieve very low noise levels if compared with equivalent products on the market.

VS Compressors with built-in inverter

A range of models of traditional Frascold compressors is offered in VS version with built-in inverter, in order to achieve a compact, flexible and reliable solution.
The perfect combination of compressor-inverter permits higher system efficiency due to the reduced fluctuation of suction pressure and ensures higher compressor reliability due to reduced number of stop – starts.
Further advantages come from the lower power absorption in partial load conditions compared with mechanical capacity controls, from the smoother compressor running and from the reduced overall noise level.
The inverter is ready to be used, connected and pre-programmed in the factory, in order to reduce installation and start-up time.