Regarding the device shown in the...

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Question 1 of 205eccef9bbacbc34ba4d456d4

Regarding the device shown in the illustration, what would be the most probable cause if item "1" indicated an unusually high vacuum while the oily water separator was operating in the processing mode? See illustration GS-0153.

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🔍 Key Concepts

• Relationship between vacuum readings and flow restrictions on the suction side of a pump • Location and purpose of item 1 (vacuum gauge) in relation to the pump and separator inlet piping • Effect of downstream components (like flow control valve #14 or coalescer beds) on suction vacuum versus discharge pressure

💭 Think About

• Is item 1 measuring conditions before the pump, between the pump and separator, or inside the separator tank? How does that location affect what a high vacuum really means? • If a component is located downstream of the pump, will problems with that component usually show up as higher discharge pressure or higher suction vacuum? • Looking at the illustration, which parts of the system could actually cause the pump to "pull harder" (more suction) just to get liquid into the separator?

✅ Before You Answer

• Verify the piping path from the bilge/holding tank, through the pump module, to the separator tank where item 1 is located. • Check whether valve #14 and the coalescer beds are on the discharge side of the pump rather than on the suction side. • Confirm that an unusually high vacuum is typically associated with a restriction on the suction/inlet side such as a clogged strainer, closed valve, or collapsed hose.

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