š Key Concepts
ā¢ Trace the lubricating oil circuit from the sump, through the bearings, to the oil cooler, and back
ā¢ Identify what fluid actually flows through the oil cooler on the other side of the heat-exchanger (condenser water, chilled water, or refrigerant)
ā¢ Look for any valves or temperature control devices in the cooling medium line that show active temperature regulation
š Think About
ā¢ On the illustration, which numbered component is the oil cooler, and what lines are connected to it that are NOT oil lines?
ā¢ Do those connected lines clearly join the condenser, the cooler/evaporator, or the liquid refrigerant line (e.g., from a receiver or after the condenser)?
ā¢ Does the drawing show any temperature control valve or bypass that would indicate active control, or does it appear to be simple, uncontrolled flow?
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Before You Answer
ā¢ Confirm which shell is labeled COOLER (evaporator) and which is CONDENSER, then see which one the oil cooler piping ties into
ā¢ Follow the arrows and line numbers from the oil cooler to see if they merge with the condenser water circuit, chilled water circuit, or refrigerant circuit
ā¢ Verify whether any control symbol (such as a regulating valve or thermostatic device) appears specifically on the cooling medium line to the oil cooler, indicating intentional temperature control