🔍 Key Concepts
• Look closely at where item "6" is located inside the separator tank module and what it is physically connected to.
• Recall the two basic automatic functions of an oily water separator: switching between water discharge and oil discharge modes, and protecting the system from damage (temperature, clogging, etc.).
• Think about how the control system knows when the oil layer at the top has reached a certain level and when it has dropped back down again.
💭 Think About
• Is item "6" placed in a position where it could measure oil/water interface level, temperature, or flow/pressure, based on how it is immersed in the liquid?
• Compare item "6" with the control components mounted on top of the separator and in the control box. Which component would be most likely to start or stop an automatic oil-discharge cycle?
• Ask yourself: does backflushing, heater control, or discharge-termination usually require a probe inside the separation chamber, or are those typically handled elsewhere in the system?
✅ Before You Answer
• Verify whether item "6" is shown as a sensor/probe penetrating the tank wall as opposed to a valve, pipe, or heater element.
• Check if there is a separate item in the illustration that more logically corresponds to temperature sensing or backflushing, so you don’t confuse their functions.
• Confirm in your mind which action would logically be triggered by a level sensor in the separation space: starting oil discharge, stopping it, or commanding another protective function.