Type II — High-PressureQuestion 145 of 240
A technician performing recovery notices the process is very slow because the recovery cylinder is warm and its pressure is high. Which action will speed recovery?
a.Cool the recovery cylinder
b.Disconnect the vacuum pump
c.Warm the recovery cylinder with a torch
d.Add nitrogen to the recovery cylinder
Explanation
Cooling the recovery cylinder lowers its internal pressure, increasing the pressure difference that drives refrigerant into it and speeding recovery. Warming the cylinder raises its pressure and slows the process. Adding nitrogen would contaminate the refrigerant with noncondensables and is not acceptable.
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Related questions on this topic
- During recovery from a Type II system, a technician sees noncondensable gases (air) collected in the recovery cylinder. What is the correct handling under Section 608?
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