Refrigeration Screw Air Compressor & Chilling Unit
Colt Screw Compressors are advanced twin-screw, oil-injected, open-drive compressors designed for industrial refrigeration and air-conditioning applications. Featuring 4+6 SRM asymmetric rotor profiles, they deliver high efficiency, reliable performance, smooth operation, and long service life, making them ideal for demanding cooling systems.
Technical Highlights
Lubricating System
• Oil separation system-efficient multi stage coalescing system is separate from the compressor. Serviceable without removing compressor, chiller, condenser. The oil carries over is maximum 5 PPM
• Integral built in oil heater maintains oil temperature for start up
• Rotary oil pumps ensure positive lubrication to bearings for start up
• Integral built in oil heater maintains oil temperature for start up
• Rotary oil pumps ensure positive lubrication to bearings for start up
Compressorsss
• Open drive positive displacement oil injected, twin Rotary suitable for low evaporating temperature up to minus 50 degree centigrade.
Casting
• Made from graded gray iron, Stress relieved & machined on CNC Machines.
Oil Cooling
• Water Cooling of Lub. oil is standard with shell and tube type heat exchanger.
• Liquid Refrigerant Injection system available on demand.
• Liquid Refrigerant Injection system available on demand.
Rotors
• Machined from High tensile carbon steel, on imported Rotor cutting machines. dynamically balanced.
Bearings
• Generously oversized cylindrical roller bearings on the suction end for radial loads and double row taper roller bearings on discharge end for radial and axial thrust.
Shaft Seal
• Mechanical balanced, face type with Rotating Carbon Steel and oil Lubricated. The shaft seal is replaceable without removing the compressor or Motor.
Capacity Control
• A built-in slide below the rotors provides steeples capacity control down to 10%, of full load capacity, which results in considerable saving on power. The slides move to and fro by an inbuilt hydraulic cylinder. Automatic control adjusts the position of the slide to reduce/increase the capacity of the compressor to match with the varying requirements.
Compressor/Motor drive Couplings
• Spacer type two-piece flexible coupling with metallic elements allows for in place replacement of coupling & compressor seal.
Drive Motor
• Two pole, SPDP or TEFC 3 phase 50 cycles 415 volts class ‘F’ insulation foot mounted as per IS-325
Typical Applications
• Typical Applications Air conditioning, Heat pumps, Bulk drug plants, Pharmaceuticals and Chemicals, Petrochemicals and Fertilizers, Cold Storage, Ice Rinks, Cooling Plants, Water Chilling, Refrigeration Plants for Food Freezing, Marine Refrigeration, Milk Dairies.