Which of the following statements concerning...

🔍 Key Concepts

• Centrifugal lube oil purifiers basic purpose and how bowl speed affects separation efficiency • Difference between operating a purifier as a clarifier vs. as a separator (water seal, removal of water vs. solids only) • Manufacturer’s design speed and flow rate recommendations for proper operation

💭 Think About

• Think about how centrifugal force is created in a purifier and what effect operating below design speed would have on separation of water and solids from the oil. • Consider what changes when you run the same machine as a clarifier instead of a separator. Which mode is normally used when you are specifically concerned about removing water from lube oil? • Ask yourself whether lube oil purifiers are generally run gently to preserve machinery, or tuned to their designed operating point for best purification.

✅ Before You Answer

• Verify which mode (clarifier vs. separator) uses a water seal and is intended to remove both water and solids from the oil. • Check which operating parameter (speed/throughput) the maker specifies as critical to achieve the necessary g-force for separation. • Confirm whether maximum design speed is the same as overspeed, and whether exam questions typically imply staying within the manufacturer’s rated limits.

Which of the following statements concerning the operation of a lube oil purifier is correct?

They should be operated as slowly as possible to ensure a long service life.

They should not be primed with water when operated as a separator.

They should be operated as clarifiers for optimum moisture removal.

They should be operated at maximum design speed and recommended operating capacity.

🔍 Key Concepts

💭 Think About

✅ Before You Answer