1Inspect the operation status of the unit,Record operating conditions.

2Check the oil level and color of the lubricating oil.

3Inspect the operation of any fuel supply, return oil, oil temperature, and oil cooling expansion valves.,If necessary, additional lubricant can be supplied.(Should the user require spare oil)。

4Inspect the time difference between the start and stop of the oil pump and the main engine.

5Inspect for any abnormal vibration and noise in the machinery.

6Check if the set temperature of the frozen water is consistent with the actual outlet water temperature.

7Inspect the evaporation temperature, condensation temperature, and the corresponding temperature differences of the incoming and outgoing chilled water and cooling water.

8Inspect for any leaks in the assembly.

9Inspect the compressor current and compare it with the actual power demand.,Are there any anomalies?

10Check the configuration settings of the control unit.

11Check the supply voltage.

12Analyze the operating conditions of the unit.