Type II — High-PressureQuestion 149 of 240
A technician is about to add liquid refrigerant into the suction line of a running compressor to charge faster. Why is this dangerous on a Type II system?
a.Liquid entering the suction can slug and mechanically damage the compressor
b.It cools the refrigerant too much
c.It only affects R-410A systems
d.It has no effect on the compressor
Explanation
Feeding liquid directly into the suction of a running compressor can cause liquid slugging, which can bend valves or break internal parts because liquid does not compress. When adding liquid to the low side, it must be metered or throttled so it flashes to vapor before reaching the compressor. This risk applies to high-pressure systems in general, not just R-410A.
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