The RC2-790B screw air conditioning compressor is designed for large-capacity central HVAC plants, high-tonnage liquid chillers, and industrial cooling operations. Utilizing an advanced twin-rotor rotary displacement design, it delivers consistent displacement and high volumetric efficiency under heavy continuous thermal loads.

Featuring precision CNC-machined 5:6 asymmetric screw rotors, this screw air conditioning compressor minimizes internal gas bypass and mechanical drag. Driven by an integrated 3-phase, 2-pole squirrel-cage induction motor cooled directly by suction gas, the unit maintains superior energy efficiency across both 50Hz and 60Hz power supplies.

To align power output with changing building thermal loads, an internal hydraulic slide valve provides 4-stage step capacity regulation (30% - 50% - 75% - 100%) as well as continuous stepless modulation (25% - 100%). Engineered for multi-refrigerant flexibility, this screw air conditioning compressor operates reliably with R22, R407C, R404A, and R507A systems.

• High-Density Gray Iron Housing: Cast from FC25 gray cast iron with inner structural reinforcement ribs to suppress operational acoustic vibration and maintain dimensional stability under high pressure.
• Flange-On Oil Separator: Cast from FC500 ductile iron to ensure high pressure resistance, low pressure drop, and exceptional oil separation efficiency.
• 10-Bearing Heavy-Duty Assembly: Combines radial and axial bearings with an alpha balance piston to absorb axial thrust forces and extend service life.
• Integrated Safety Sensors: Standard PTC thermistor modules continuously monitor motor coil heat, discharge gas temperature, phase loss, and phase sequence errors.

• Large Commercial HVAC & Central Air Conditioning: Ideal for shopping centers, high-rise office complexes, airport terminals, and district air conditioning plants.
• Water & Air-Cooled Liquid Chillers: Designed for high-tonnage industrial and commercial liquid chiller packages requiring precise load matching.
• Industrial Cleanrooms & Environmental Control: Delivers stable, continuous temperature and humidity control for electronics, semiconductor, and pharmaceutical plants.
• Commercial Cold Storage Logistics: Provides dependable heavy-displacement cooling for agricultural distribution hubs and bulk food preservation facilities.

Coolstart is a B2B manufacturer of commercial and industrial thermal control equipment, combining precision mechanical engineering with automated manufacturing. Our machinery lineup includes semi-hermetic screw compressors, scroll units, reciprocating systems, and cold storage units built for efficiency and long-term operating durability. Equipped to handle custom OEM/ODM requests, Coolstart supplies contractor networks and chiller manufacturers across North America, Europe, the Middle East, and Asia-Pacific with direct-factory pricing, certified quality, and global engineering support.

A1: At 50Hz, it delivers 791 m³/h displacement with a 230 HP motor; at 60Hz, it provides 952 m³/h displacement with a 276 HP motor.

A2: This model features 4-stage step capacity regulation (30% - 50% - 75% - 100%) alongside continuous stepless control ranging from 25% to 100%.

A3: The RC2-790B supports Star-Delta (Y-Δ) and Direct-On-Line (DOL) starting configurations.

A4: Stock sample units ship within 3 business days, while standard mass production orders take 10 to 15 working days.

A5: Yes, we provide OEM customization, including tailored voltage setups, customized nameplates, and branded packaging, backed by a 1-year standard factory warranty.

Our application engineering team provides custom technical proposals and direct factory quotes within 8 hours of receiving your inquiry. Contact Coolstart today to optimize your cooling system efficiency and receive a competitive quotation.