Type III — Low-PressureQuestion 166 of 240
Because a low-pressure chiller operates in a vacuum on the low side, what happens when it develops a leak?
a.Air and moisture are drawn into the system
b.Nothing changes until the charge is empty
c.The system pressure rises sharply
d.Refrigerant sprays out rapidly
Explanation
Since the low side runs below atmospheric pressure, a leak pulls air and moisture inward rather than pushing refrigerant out. That incoming air becomes non-condensable gas the purge unit must remove, and the moisture can cause acid and corrosion. This inward leakage shapes nearly every Type III service procedure.
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Related questions on this topic
- The rupture disk on a low-pressure chiller is a safety device that is typically designed to relieve at what pressure?
- What is the primary purpose of a purge unit on a low-pressure centrifugal chiller?
- Which of the following is a low-pressure refrigerant used in centrifugal chillers?
- Water entering the refrigerant side of a low-pressure chiller through a leaking tube is dangerous mainly because it can:
- To speed up refrigerant recovery from a low-pressure chiller, a technician should:
- Frequent operation of the purge unit on a low-pressure chiller is usually a sign that:
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