This case study highlights a large-scale CRAC retrofit project for a Singapore-based colocation data center operator managing 114 aging cooling units across multiple halls. The customer faced excessive energy usage, obsolete components, rising maintenance costs, inefficient variable speed drives, and compliance requirements tied to government energy efficiency grants. Vertiv delivered a comprehensive retrofit using EC fans, Liebert® iCOM™ controllers, IS unity cards, and sensors to create an intelligent, coordinated cooling system. The retrofit significantly reduced energy consumption, extended the lifespan of CRAC units by an additional seven years, and improved monitoring and system reliability. The scalable approach minimized disruption while enabling long-term sustainability and operat

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