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(Optional) Leakage Test with Water for the Water-Cooled Module
Prerequisites
If a water-cooled module is installed, you need to do leakage test with water.
Ensure that the indoor temperature is always above 4°C during the leakage test with water; otherwise, the pipes may experience frost cracks. If the indoor temperature is below 0°C, take anti-freezing measures for the pipes.
Procedure
- Manually open the chilled water valve (100%).Figure 4-79 Opening the chilled water valve
- Open the main water inlet valve for the water-cooled module.
- Gradually open the cooling water side needle valve. Air and chilled water flow out of the needle valve together.
- Adjust the air exhausting speed until no bubble flows out of the needle valve.
- Tighten the cooling water side needle valve.
- Inject water to 0.8 MPa, and preserve the pressure for 24 hours. Then connect a pressure gauge to a needle valve on the pipeline to measure the pressure. If the reading remains unchanged, the pipe is not leaking. You can perform the subsequent operations.
