Screw Chillers
Specification: Air-Cooled & Water-Cooled
Water-cooled and air-cooled twin screw chiller service, oil separator rebuilds, and slide valve calibration.
Engineering Scope & Overview
Twin screw chillers provide rugged, continuous cooling for commercial facilities and industrial processes. Our technicians service Bitzer, Hanbell, Trane, and Carrier screw compressors, ensuring exact oil level maintenance, slide valve capacity modulation, and economizer loop performance.
WMI Field Protocol & Certified Best Practices
- Compressor synthetic lubricant sampling and acid count verification
- Internal oil separator filter and strainer replacement
- Slide valve capacity control calibration for smooth part-load staging
- Subcooling and superheat optimization via electronic expansion valves
Frequently Asked Questions
- What are the main advantages of twin-screw chillers in industrial facilities?
- Screw compressors have few moving parts (two precision helical rotors), high mechanical reliability, superior part-load efficiency via slide valves, and high tolerance to liquid slugging.
- Why is oil management critical for screw chiller operation?
- Oil seals the rotor clearances, cools the compression chamber, and lubricates the thrust bearings. Routine synthetic oil sampling and coalescent filter replacement are vital to prevent rotor scuffing.
- Do you service both air-cooled and water-cooled screw machines?
- Yes. We maintain rooftop air-cooled packaged screw chillers (50 to 500 tons) and indoor water-cooled central plant screw units up to 1,000+ tons.
Emergency Dispatch & RFP Inquiry
Contact Western Mechanical Inc. toll-free at (800) 585-5085 for commercial and industrial service across Southern California.