If you mistakenly change from a lower pour...

Question 1 / 270705eccef9dbacbc34ba4d4601d

Question 1 of 270705eccef9dbacbc34ba4d4601d

If you mistakenly change from a lower pour point lubricant to a higher pour point lubricant in a refrigeration system, what will be the result?

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Question 1 of 27070

If you mistakenly change from a lower pour point lubricant to a higher pour point lubricant in a refrigeration system, what will be the result?

🔍 Key Concepts

• Pour point of lubricating oil and what it means in terms of temperature and flow • Where the coldest temperatures occur in a refrigeration system (compressor, condenser, expansion device, evaporator) • How oil and refrigerant travel together and where oil can separate out or get trapped when it becomes too thick

💭 Think About

• Ask yourself: If the pour point is higher, what happens to the oil at very low temperatures – does it flow more easily, or does it become more waxy/solid? • Which part of the refrigeration system operates at the lowest temperature, and what would happen if oil thickens or congeals there? • Consider each option and think: in which location would a too-thick oil most likely cause trouble, given actual temperature conditions?

✅ Before You Answer

• Identify the lowest-temperature component of the refrigeration cycle and focus your attention there • Verify what a higher pour point implies: higher or lower minimum usable temperature? • Eliminate any choices that would require the oil to get thinner or flow better at low temperature, since that is the opposite of a higher pour point effect

Question 1 of 27070

If you mistakenly change from a lower pour point lubricant to a higher pour point lubricant in a refrigeration system, what will be the result?

compressor lubrication will be improved

oil will not leave the crankcase

compressor valves will be damaged

oil may congeal in the evaporator

Question 1 / 270705eccef9dbacbc34ba4d4601d

Question 1 of 270705eccef9dbacbc34ba4d4601d

If you mistakenly change from a lower pour point lubricant to a higher pour point lubricant in a refrigeration system, what will be the result?

Back

Question 1 of 27070

If you mistakenly change from a lower pour point lubricant to a higher pour point lubricant in a refrigeration system, what will be the result?