Maintaining transformers installed on rooftops presents unique challenges. 365 Transformer Services recently completed a rooftop oil processing project at a large data center, where access limitations and long hose runs required careful planning and specialized equipment.
The Challenge
The transformer was located approximately 80 feet above ground on the roof of the facility. With no cranes or rigging available, our crew had to manually transport hundreds of feet of oil hoses and processing equipment to the rooftop.
Once staged, we installed nearly 300 feet of hose to connect the transformer to the oil processing system and oil storage totes.
Custom Pump Solution
To maintain a stable oil flow, a custom pump system was used that matched the oil processor flow rate of 30 gallons per minute.
The transformer used FR3 natural ester oil, which becomes thicker in cold conditions. Proper pump sizing and hose management ensured the oil could be circulated efficiently.
Safe Oil Processing
During processing, the system circulated approximately 2,500 gallons of oil per cycle and completed four full passes through the filtration and degasification system.
Throughout the operation, the team maintained continuous radio communication, constant monitoring of hoses and connections, and absorbent containment on all hose fittings. These precautions ensured safe operation on the rooftop of an active data center facility.
Final Testing
After circulation was complete, the team carefully drained all hoses, collected oil samples for Dissolved Gas
Rooftop Transformer Oil Processing at a Data Center
Analysis (DGA), and dismantled and removed all equipment from the roof. The transformer was left properly processed and ready for reliable service.
The Importance of Specialized Field Services
Rooftop transformers are becoming more common in data centers and urban infrastructure. Servicing these installations requires experienced technicians, specialized equipment, and strict safety practices.
365 Transformer Services provides transformer oil processing, testing, commissioning, and maintenance for utilities, renewable energy facilities, industrial plants, and data centers across the United States.