... by their structures of multi- Semi-Hermetic Bitzer compressors Screw Compressor Condensing Units1. Product description The Products feature by ... , over heating, over loading, high dischanging temperature, low oil position, oil leakage, high&low pressure etc; Economizers; 3. Model ... means 1 Cooling Fair cooled; Swater cooled; Compressor type LG: semi-hermetic screw Compressor brand BBiztler Series name