New Sabroe SAB/Johnson Controls/Comron Industrial Refrigeration SL two-stage (booster) freezing pump installation is assembled by Comron International from the following main components:

• New Sabroe/Johnson Controls two-stage screw compressor packages consisting of a total of 4 compressors, of which 2 units type SAB 283E as low-stage compressors and 2 units type SAB 233L as high-stage compressors
• The 4 new two-stage screw compressor packages consist of: Horizontal oil separators, thermosiphon shell-and-plate heat exchangers/oil coolers, Unisab III controllers, Comron Industrial Refrigeration S.L. 315 kW E-motors (SAB 283E) & 450 kW E-motors (SAB 233L) IE4, IP55 with insulated bearings, economizer connection with control stations
• New own brand: Comron Industrial Refrigeration SL - low pressure separator -40°C (surge drum) with a volume of 15 m³ equipped with 2 used hermetic ammonia liquid pumps
• New intermediate pressure (IP) flash intercooler vessel -10°C, 10 m³ own brand: Comron Industrial Refrigeration SL
• New high pressure liquid tank for thermosiphon application 4 m³ own brand: Comron Industrial Refrigeration S.L
• New control panels with 315 & 450 kW frequency inverters for compressors 1 to 4 brand: Yaskawa
• Used control panel for the complete installation with new wiring, Siemens S7 1200 PLC Simatic HMI touchscreen with custom-made software
• New Evapco type PMC-1556E evaporative condenser
• All required shut-off valves, Danfoss PM valves, control stations, floats, electronic liquid level controllers etc.
• All required P&ID drawings, E-schematics and PED pressure certificates

Mentioned cooling capacity of 1946 kW is with refrigerant R717/ammonia at
-40°C/+35°C/ECO 60 Hz with a rotational speed of 3600 RPM, resulting in an absorbed motor power of 1256 kW for 4 compressors.