Which of the following problems can result...

🔍 Key Concepts

• Two-stage (low pressure / high pressure) air compressor flow path: LP cylinder → intercooler → HP cylinder • How valve leaks on different stages affect pressure in the piping between stages (the intercooler side) • Difference between intake valves and discharge valves and which side of each valve (upstream/downstream) the intercooler is on

💭 Think About

• Sketch or imagine the flow path of the compressed air: from the low pressure cylinder, through which valve, into what space, then to which valve on the high pressure cylinder? Decide where the intercooler sits in that path. • For each option, ask: would this fault tend to let air escape FROM the intercooler, or prevent air from building up TO the normal intercooler pressure? Or would it mostly affect receiver pressure instead? • Focus on the valves that are directly connected to the intercooler line. Which side of the compressor (LP discharge vs HP intake) is that, and what would a leak there do to the pressure in that line?

✅ Before You Answer

• Identify exactly which component(s) are physically connected to the intercooler: LP discharge side, intercooler, and HP intake side. • For each valve mentioned, decide whether a leak makes pressure go down in the intercooler line or mainly changes pressure in the receiver or elsewhere. • Eliminate options that act only on the final receiver/relief side and not on the intercooler (between stages).

Which of the following problems can result in below normal pressure in the intercooler of an operating low pressure air compressor?

Defective pressure pilot valve

Defective receiver relief valve

Leaking intake valves on the high pressure cylinder

Leaking discharge valves on the low pressure cylinder

🔍 Key Concepts

💭 Think About

✅ Before You Answer