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(Bottom Piping) Connecting
4.5
Water Inlet and Outlet Pipes
Thermal
insulation
foam
•
If the pressure decreases, find out leakage point by using soap bubbles and repair the leakage.
•
If the pressure is preserved properly, exhaust nitrogen and warp pipes and joints with thermal
insulation foams.
4.7
Filling Water to Exhaust Air
1. Confirm that the chilled water valve is open (100%).
2. Open the main water inlet valve.
3. Slowly open the exhaust valve to exhaust air accompanied by some
chilled water from the exhaust hose.
4. When air bubbles stop coming out of the hose opening, turn the chilled
water valve to the zero as air has been exhausted.
5. Close the exhaust valve.
4.6
Leak Checking
1. Hold down the button and rotate the handle to
manually turn the chilled water valve to 100%.
2. Confirm that the needle valves and exhaust valves
on the pipeline are closed.
3. Connect a pressure gauge, a reducing valve, and
the nitrogen to the needle valve on the water out
pipe. Inject 0.8 MPa (when the pressure is stable)
nitrogen, and leave them for 24 hours.
4. After 24 hours, check whether the pressure
decreases.
12
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