Type II — High-Pressure第 144 / 240 题
A technician wants a quick way to know whether a recovery cylinder is a refrigerant recovery cylinder by its color scheme. What is the standard color for a refrigerant recovery cylinder?
a.Solid orange
b.Solid black
c.Gray with a yellow top
d.Green body with a white top
解析
The standard color scheme for a refrigerant recovery cylinder is a gray body with a yellow top (shoulder). This distinguishes recovered refrigerant cylinders from color-coded virgin refrigerant cylinders. Using the correct, DOT-approved cylinder helps prevent dangerous mix-ups and overpressure.
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同考点相关题目
- A technician measures 12°F of superheat on a fixed-orifice R-22 system but the manufacturer's chart calls for 20°F at those conditions. What does the low superheat suggest?
- 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?
- A DOT-approved refrigerant recovery cylinder must be periodically retested for safety. What is the standard hydrostatic retest interval for these cylinders?
- 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 technician needs to evacuate a Type II system to remove moisture and reaches 500 microns on the micron gauge. After isolating the pump, the reading climbs and stabilizes around 5,000 microns. What does this most likely indicate?
- A technician recovers R-22 from a rooftop unit that holds 150 pounds using equipment made after November 15, 1993. To what vacuum must the system be evacuated during recovery?
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