The port labeled "G" on the device shown in the illustration is used to __________. See illustration MO-0012.
• Identify the type of machine shown (self-cleaning centrifugal purifier with a hydraulically operated bowl). • Understand the function of opening water vs closing water in operating the sliding bowl bottom. • Trace where port G is located in relation to the operating slide, bowl bottom, and water discharge passages.
• Look at the path of the water that moves the operating slide: when the bowl needs to open for sludge discharge, what has to happen to that water? • Compare the vertical position of port G with the closing water space and the sludge discharge ports—does it connect to the sludge path, the water path, or the oil path? • Ask yourself whether port G is controlling the separation interface continuously, or only used during the open/close cycle of the bowl.
• Verify whether port G connects directly to the sludge outlet or to a water drain passage at the base of the bowl. • Confirm which water (opening vs closing) must be relieved so the operating slide can move and the bowl bottom can shift position. • Make sure you are not confusing the interface control (ring dams/discs) with the hydraulic water system that actuates the bowl bottom.
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