608 TYPE II Exam Review With Questions And Answers Quiz
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Course
NU1426
Institution
NU1426
608 (TYPE II) Exam Review With Questions And Answers 2024/2025 Quiz
When a new system has been assembled, the first thing to do is?
After installation of a field-piped R-410A split heat pulp, the unit should first be?
The EPA regulations require that any appliances containing more than 50 pounds...
608 (TYPE II) Exam Review With Questions And
Answers 2024/2025 Quiz
1). When a new system has been assembled, the first thing to do is?
Ans: Pressurize the system with an inert gas & leak check.
2). After installation of a field-piped r-410a split heat pulp, the unit should first be?
Ans: Pressurized with nitrogen then leak checked.
3). The epa regulations require that any appliances containing more than 50 pounds of
refrigerant (except for commercial & industrial process refrigeration) must be repaired when
the leak rate exceeds _________ of the charge per year?
Ans: 15%
4). R-410a requires recovery tanks rated for at least?
Ans: 400 psig
5). After refrigerant liquid has been recovered from a system, any remaining vapor is?
Ans: Condensed by the recovery system.
6). Your recovery/recycling machine has r-502 refrigerant in it. you now have to recover
refrigerant from a unit with r-22. what must be done before the r-22 refrigerant can be
recovered/recycled?
Ans: Recover as much R-502 from the recovery unit as possible, change filter, &
evacuate.
7). In a refrigeration system with a txv (or other type of throttling device), the component
directly following the condenser is the?
Ans: Receiver
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, 8). When charging an r-410a system that uses a water-cooled condenser, you must first charge
with vapor to a pressure of at least________, before switching to liquid charging.
Ans: 120 psig
9). Recovered refrigerant may contain what?
Ans: 1.) Acids
2.) Moisture
3.) Oils
10). Your recovery/recycling machine has r-22 refrigerant in it. you now have to recover
refrigerant from a unit with r-410a. what must be done before your recovery unit can be
used to recover r-410a?
Ans: 1.) The recovery unit must be EPA certified for use with R-410A.
2.) The recovery tank must be designed for the pressure of R-410A.
3.) The filter & lubricant in the recovery unit must be changed, & the recovery unit
evacuated.
11). To recover liquid refrigerant, you must connect one hose to the?
Ans: Liquid Line.
12). The proper charging method for blended (non-azeotropic) refrigerants (400 series) is to use
a remove the charge from the cylinder as a?
Ans: Liquid
13). Before using a recovery unit to remove a charge, what steps should be taken?
Ans: 1.) Check service valve positions.
2.) Check the oil level in the recovery unit.
3.) Evacuate recovery unit & recovery tank.
14).
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