Open vent needle valve and bleed air from hose. Then close vent valve.
开启排气针形阀，并从软管排放空气。然后关闭排气阀。
Remove the relief valve hose from fitting below inlet ball valve.
从进口球阀下面连接件拆卸安全阀软管。
Connect vacuum hose to booster check valve.
连接真空软管到增压器检测阀。
Water drainage hose, charging valve shall be kept open.
为排出槽内和排水管中的水，应使排水阀保持开状态。
Open valve a to vent air from the vent hose.
开启阀门A从排气软管处排出空气。
Open valve a to vent air from the vent hose.
开启阀门A从排气软管处排出空气。
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