Shanghai Yuzhen Engineers' On‑Site Maintenance in Indonesia: Two Hanbell AA6‑55A Screw Air Compressors Revitalized with High Efficiency and Stability

Recently, Shanghai Yuzhen after-sales engineers performed systematic maintenance on two Hanbell AA6-55A air cooled screw air compressors at a customer site in Indonesia. In the hot and humid environment of Southeast Asia, long-term continuous operation places stringent demands on the compressor‘s heat dissipation, mechanical reliability, and service response.

The Hanbell AA6-55A features direct-drive transmission, a simple and compact structure, and easy maintenance. Equipped with a high-flow air-cooling system, it keeps the discharge temperature within a reasonable range even in Indonesia‘s high-temperature environment. Its core compressor unit uses a self-developed high-efficiency screw rotor profile, combined with heavy-duty bearings and precision machining, ensuring low vibration, low noise, and high reliability during extended continuous operation.

During the maintenance, Yuzhen engineers focused on inspecting the quality of the lubricating oil, the condition of the oil filter, and the cooling efficiency of the air-cooled cooler. They also fully calibrated belt tension, coupling alignment, and electrical connections. After maintenance, the discharge pressure stabilized under the design conditions, overall vibration levels decreased, and operating noise was significantly reduced.

The customer’s equipment manager commented: “The Hanbell air compressor is rugged and durable, and its air-cooled design is well-suited to the tropical environment of Indonesia. Yuzhen's professional maintenance gives us great peace of mind.”

Yuzhen always provides overseas customers with stable, durable, and easy-to-maintain compressed air solutions through solid technical service.