Injecting Water To Expel Gas - Huawei NetCol5000-C030H90D0 User Manual

NetCol5000-C(030, 032, 065) In-row Chilled Water
Smart Cooling Product
User Manual (2019)
Step 4 After the leakage test has been performed and gas has drained, re-wrap the
needle valve with thermal insulation foam.
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Exception Handling
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3.10 Injecting Water to Expel Gas

Prerequisites
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Procedure
Step 1 Ensure that the needle valve and exhaust valve on the pipe are closed and the
chilled water valve is in the 100% state, as shown in
Figure 3-39 Adjusting the chilled water valve
Step 2 Open the main water inlet valve.
Step 3 Gradually open the exhaust valve, as shown in
chilled water flow out of the exhaust hose together.
Issue 03 (2020-08-30)
If the pressure decreases, find out and repair the leakage point by using soap
bubbles.
If the pressure is preserved properly, exhaust nitrogen and wrap pipes and
joints with thermal insulation foams.
Nitrogen must be expelled before injecting water.
To avoid blockage of the heat exchanger in the smart cooling product due to
foreign matter from the main pipe during the construction, you are advised to
clean the main pipe before water is supplied to the smart cooling product.
Turn off the isolation valves on the water inlet and outlet pipes before the
cleaning and turn them on afterwards.
Copyright © Huawei Technologies Co., Ltd.
Figure 3-39.
Figure 3-15 or Figure
3 Installation
3-16. Air and
60