Chiller-HVAC Maintenance and Servicing Project at Ba Na Hills SunWorld 2025
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About Project
SunWorld Ba Na Hills, one of Vietnam's leading tourist destinations, always prioritizes a comfortable and safe experience for visitors. To ensure this, the mechanical and electrical system (HVAC) plays an extremely important role, maintaining ideal temperature and air quality. Recognizing that importance, the project Chiller-HVAC Maintenance and Servicing periodic Chiller – HVAC maintenance project has been launched. This is a project to optimize performance, extend equipment life, and ensure a non-stop operating environment.
Executing Unit
With extensive experience and expertise in the field of mechanical and electrical engineering, Khoi Minh is proud to be the chosen partner to implement this large-scale project. We are committed to providing the highest quality services, with a team of skilled engineers and modern equipment.
Goals
The main goal of the project is to ensure that the entire Chiller and HVAC system at SunWorld Ba Na Hills operates stably, efficiently, and durably. The project takes place during a time of high tourism demand, requiring the system to operate continuously while maintaining optimal performance. Periodic Chiller – HVAC maintenance not only helps prevent incidents but also optimizes operating costs and minimizes the risk of service interruptions.
Project Implementation Time
The project is implemented with a specific schedule, to ensure that it does not affect the overall operation of the resort.
- Implementation Time: June 17, 2025 – July 5, 2025 (18 days.)
- Location: French Village, dining areas, MIXUSED, ARAPANG.
Chiller – HVAC Maintenance Tasks
The Chiller – HVAC maintenance process of Khoi Minh is designed systematically, in accordance with international standards and practical experience. Each step is meticulously performed to detect and thoroughly address potential issues.
Oil & Refrigerant Handling

- Address oil leaks at the condenser connection with the filter.
- Top up refrigerant when low, ensuring optimal operating pressure.
- Replace filters/filter driers when dirty or damaged to prevent obstruction of refrigerant flow.
- Replace lubricating oil when deteriorated (oil with unusual color).
- Add lubricating oil when indicated as depleted to reduce friction, extending compressor life.
- Address refrigerant leaks using nitrogen pressure testing to locate leaks and recharge refrigerant, ensuring a completely sealed system. These are the key steps in
Electrical – Control System Troubleshooting

- Replace damaged control power transformers to prevent system errors or sudden shutdowns.
- Check & replace damaged condenser fan, ensuring effective heat dissipation and maintaining Chiller performance.
These tasks help the HVAC maintenance system operate stably.
Other Chiller Maintenance Checks

- Check for oil return failure when the system lacks refrigerant – a sign of complex issues.
- Check for oil accumulation in the reversing valve, which can cause blockages and reduce heat transfer efficiency.
These comprehensive checks help ensure that the Chiller maintenance work is the most effective.
Benefits After the Chiller – HVAC Maintenance Project
After completing the project, SunWorld Ba Na Hills will receive many practical benefits, both in terms of operation and economy.
Energy Saving & Cost Reduction
A Chiller and HVAC system that is properly Chiller – HVAC maintained will operate more efficiently, consuming less energy. This directly leads to a significant reduction in monthly electricity costs. Furthermore, the early detection and resolution of small problems will prevent major, more costly damages in the future, helping to save on repair and equipment replacement costs.

Improved Efficiency & Durability
Regular HVAC maintenance helps maintain the optimal working performance of the entire system. The equipment will operate at its designed capacity, providing cool and high-quality air. At the same time, this process also extends the life of the Chiller and other HVAC equipment, reducing the frequency of replacements.
Environmentally Friendly & Sustainable
An efficient operating system not only saves energy but also reduces emissions into the environment. Optimizing the cooling process and using the correct refrigerant contributes to environmental protection, towards the sustainable development goals for SunWorld Ba Na Hills. This is an important commitment of the Chiller maintenance project.
Conclusion of the Chiller – HVAC Maintenance Project
The Chiller – HVAC maintenance project at SunWorld Ba Na Hills in 2025 is not just a technical job but also a strategic investment in service quality and sustainable development. The result of the project will be a stable, efficient mechanical and electrical system, bringing maximum comfort to visitors and employees.

We are confident that with the professional process and dedicated technical team, the project will achieve great success, affirming the reputation and capacity of Khoi Minh in the field of Chiller – HVAC maintenance.
Appreciation
We would like to express our deep gratitude to the SunWorld Ba Na Hills Management Board for trusting and creating favorable conditions for Khoi Minh to implement this important project. Close cooperation is the key fa
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