One-Stop Cold Storage Solutions: Design, Manufacture & Support
One-Stop Cold Storage Solutions: Design, Manufacture & Support
Category: Condensing Units
The Bitzer S4T-5.2Y is a 5-horsepower, two-stage semi-hermetic condensing unit configured for quick-freezing and low-temperature duty in food industry facilities. Assembled and bench-tested by Arteco around a genuine Bitzer compressor, this unit covers an evaporation range from -35°C to -15°C, making it a strong match for blast freezers, quick-freeze rooms, and frozen preparation areas where product must be pulled down quickly and held at stable temperature. Two-stage compression keeps discharge temperatures controlled under deep suction conditions, protecting both the compressor and the food product’s quality during demanding freeze cycles.
The S4T-5.2Y is at home wherever food products must be frozen fast and stored cold. Common installations include quick-freeze rooms for portioned meat and poultry, seafood freezing tunnels with batch handling, bakery blast chilling lines, dumpling and prepared-food freezers, and buffer freezers between processing and cold storage. Because the unit bridges medium and low temperature duty, it can also serve dual-purpose rooms that chill products during the day and hold frozen stock overnight. For plants that run two-shift or continuous production, the two-stage compression design delivers stable capacity with lower electrical stress, which supports energy management goals and reduces peak-demand charges.
Quick freezing demands fast product pull-down, which forces evaporator suction pressures to their lowest points exactly when the compressor is working hardest. In a single-stage machine this produces very high pressure ratios, elevated discharge temperatures and reduced efficiency. The S4T-5.2Y divides compression into two stages with interstage vapor cooling, keeping discharge temperatures lower and volumetric efficiency higher. The result is more cooling capacity per kilowatt of input at deep temperatures, faster freeze times, and better protection of product texture – critical for seafood and prepared foods where ice-crystal size determines quality. Lower discharge temperature also preserves lubricant quality, reducing wear across long freezing cycles.
Arteco assembles each condensing unit to a controlled build specification with torque-checked connections, nitrogen-protected brazing and triple pressure testing of the refrigerant circuit. Wiring is labeled for fast field connection, and test documentation ships with the unit. Our engineers verify the unit against your room load, defrost strategy and product freezing profile before order confirmation, and our team remains available for start-up guidance, controls questions and spare parts throughout operation.
Capacity depends on evaporation temperature, ambient conditions and the product load. In typical quick-freeze duty around -30°C to -35°C evaporation, units in this class serve rooms or tunnels handling several hundred kilograms of product per batch. Share your product type, entry temperature and batch weight through our RFQ form for an exact selection.
Yes, two-stage Bitzer compressors in this series support hot-gas defrost arrangements commonly used in freezer duty. We coordinate defrost plumbing and control logic with the evaporator package during system design.
It covers the full -35°C to -15°C range, so one unit can feed both frozen storage rooms and lower-temperature freezing equipment through separate expansion controls, subject to an engineering review of the piping layout.
Each unit ships with pressure and run test records, wiring diagram, operating manual and the Bitzer manufacturer warranty on the compressor. Arteco provides ongoing technical support and spare parts supply.
Quick-freeze projects succeed or fail in the planning stage, because freezing duty concentrates load into short, intense cycles. Before ordering, our engineers review the product being frozen – its mass, entry temperature and packaging – alongside batch weight and cycle timing, because these inputs determine the capacity the unit must deliver at the coldest suction conditions. Room air arrangement matters equally: quick-freeze rooms need airflow across every product surface, so evaporator placement and stacking patterns are reviewed with the refrigeration selection. Electrical supply, defrost method and control logic complete the picture. Planning these inputs together is what converts a nominal 5 HP unit into a freezing system that holds cycle times.
Yes. The S4T-5.2Y can be quoted with matched evaporators, expansion controls, defrost arrangement and electrical package as one engineered system, so all components arrive compatible and commissioning proceeds without interface surprises.
| Specification | Value |
|---|---|
| Model | S4T-5.2Y |
| Power | 5 HP |
| Compressor Type | Two-Stage Semi-Hermetic |
| Refrigerant | R404A / R507A |
| Voltage | 380V/3Ph/50Hz |
| Application | Food Industry Quick Freezing |
| Temperature Range | -35°C to -15°C |
| Manufacturer | Bitzer |
