Used piston package brand Grasso/GEA type RC611. This in good condition V-belt driven piston package consists of the following main components: 

• Grasso 6-cylinder piston compressor type RC611, V-belt driven
• Crompton Parkinson 110kW E-motor (400V,50Hz,1475RPM)
• Vertical oil separator
• Pressure gauge set
• All safety devices 
• V-belt protective hood
• Compressor built in 2007, frame 1978

Mentioned cooling capacity of 443kW is with refrigerant R717/NH₃ at -10°C /+35°C on 1000RPM.