Bitzer compressor rack system, capacity from 30HP to 300HP, refrigerant R22 or R404a, PRC control, used for cold storage. Product name: ... used in the storage of food, drug, chemicals and fruits. Compressors can work together, good reliabilityMultiple stage energy-controlling systemPlc ... compressor doesn’t work. Safe: With complete safe protection system,, it can work well in high or low temperature ...