Water-Cooled Chiller Installation Precautions

The site must be level and load-bearing capacity meets the static load requirements of the equipment to prevent settling. Allow at least 1.5 meters of clearance around the chiller and avoid heat sources and corrosive environments. After unpacking, verify the equipment model and accessories (condenser, compressor, etc.), inspect components for transport damage, and test the compressor insulation resistance (≥1MΩ) and the pump impeller's flexibility.

The cooling tower must be higher than the condenser (height difference ≥ 0.5 meters). Connecting pipes should be insulated, and a circulating water pump with a suitable head should be installed. The water tank should be located below the evaporator, with a capacity of no less than 1/3 of the total system water volume to ensure smooth water return.

Use dedicated lifting points for the main unit, tilting no more than 15° to prevent refrigerant oil backflow. Once in place, level the unit to a tolerance of ≤0.5mm/m using unit foot bolts or stainless steel washers.

Pipe Connections: Use flexible joints for inlet and outlet pipes. The pipe diameter should be no smaller than the main unit's connection. The pipe bracket should be at least 30cm from the connection. Install a pressure gauge and thermometer on the condenser pipe. Add a Y-type filter on the water inlet. Install an exhaust valve at a high point and a drain valve at a low point in the system. During pipe welding, nitrogen gas should be used for protection, and weld joints should be subjected to a water pressure test (1.5 times the working pressure, maintaining pressure for 30 minutes without leaks).
The electrical system should be wired by a professional electrician to ensure correct phase sequence and ground resistance ≤4Ω. The control box should be located away from water sources, and the wiring should be protected by metal pipes.

During installation, power should be turned off and the refrigerant valve should be opened slowly. Before commissioning, vacuum the system to ≤ -0.1MPa and maintain a pressure drop of ≤ 0.005MPa for 24 hours before charging with the appropriate refrigerant. During a test run, circulate the water pump for 30 minutes, then start the compressor. Monitor the evaporation/condensation pressure, current, and water temperature difference (5-10°C). Immediately shut down the system if any abnormalities occur.

Maintenance Planning: Reserve access doors, install flow meters on key pipelines, and maintain backup circuits in the electrical cabinet for future installation of monitoring sensors.