Used and in condition as new (only 1 year in production) complete Bitzer 2-stage freeze-pump / blast freeze installation built on a steel frame and consisting of the following main components:

• 3 pieces low pressure (booster) screw compressors, open type Bitzer OSKAB 7471, each with a 30 kW E-motor
• 2 pieces high pressure screw compressors, open type Bitzer OSKA 7451, each with a 55 kW E-motor
• 2 x oil separator 881 Ltr for the low and high pressure side
• Water-cooled oil cooler, plate heat exchanger type, brand Alfa Laval, coupled to an air-cooled Güntner dry cooler type GFH 0678/2N
• Horizontal low pressure separator 640 Ltr -40°C with 2 pieces Hermetic CAM 1/3 NH₃ liquid pumps (combined with the intermediate pressure separator)
• Horizontal intermediate pressure separator 640 Ltr -6°C coupled to a plate cooler / heat exchanger for natural circulation, approx. 130 kW, which can be used for glycol cooling if required (combined with the low pressure separator)
• Air-cooled condenser or evaporative condenser at choice
• Custom-made control box with new Siemens PLC / Simatic touchscreen
• All necessary certificates for PED
• Refrigeration technical and electrical drawings
• Custom-made software
• Thermofin X-TFA 080.1-E-22-20_10-HG-LHS industrial blast freeze evaporator, suitable for NH₃ pump circulation, with a cooling capacity of 125 kW at -40°C evaporating temperature and -28°C / -33°C air inlet/outlet temperature. Equipped with 4 x Ø800 mm fans (total air volume approx. 104,000 m³/h), 20/10 mm fin spacing, hot gas defrost in both coil block and drip tray, and stainless steel AISI 304 housing.

The mentioned cooling capacity of the Bitzer freeze-pump installation is based on refrigerant R717 at -40°C / +40°C.