RefrigerationQuestion 70 of 110
A compressor that is trying to compress liquid refrigerant returning from the evaporator can suffer what damage?
a.Improved efficiency
b.Higher superheat
c.Slugging and mechanical damage to valves or bearings
d.Lower amp draw
Explanation
Liquid refrigerant is nearly incompressible, so liquid floodback or slugging can damage compressor valves, bearings, and rods. Maintaining adequate superheat prevents liquid from reaching the compressor. This is why superheat is carefully controlled.
Practice all 110 questions free — no signup required.
Related questions on this topic
- As a general principle, adding refrigerant charge to a properly running system tends to do what to the low-side pressure?
- A refrigerant metering device such as a fixed orifice or TXV creates what effect on the refrigerant?
- Which category of refrigerants is being phased down under regulations due to high global warming potential?
- When comparing the two sides of an operating system, the discharge line is normally which relative to the suction line?
- A reciprocating compressor changes the refrigerant state by doing what?
- High condenser (head) pressure with normal charge is most often caused by what?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB C-20 Warm-Air HVAC Trade Exam · How we review