With the hanging seasons it is important to keep warm in the winter and get some cool air for the summer. This therefore places some importance on understanding how to fit in heating and air conditioning equipment for buildings. Take up the true or false test below and get to see how much you know about these services and what is needed to have a proper functioning one. All the best!
True
False
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True
False
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True
False
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Should never be mixed
May be mixed after a system has been converted from R-12 to R-134a
Use the manifold gauge sets
All of the above
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True
False
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Service R-12 A/C systems
Purchase R-12
Both A and B
Neither A nor B
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Evacuation is a process in which refrigerant in the system is released.
Evacuation is a condition that exists when a compressor runs until there is no refrigerant left in the system.
Evacuation is a process that removes all traces of air, moisture, and refrigerant from the system.
Evacuation is a process that uses air to force moisture and dirt out of the system.
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False
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High side
Low side
Both A and B
Neither A nor B
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True
False
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True
False
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True
False
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The suction line must be cool to the touch from the evaporator outlet to the compressor.
The liquid line from the condenser outlet to the orifice tube should be cool.
The evaporator should feel very cold.
The accumulator must be cool to the touch.
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A only
B only
Both A and B
Neither A nor B
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Hydrogen gas
Hydrofluorocarbon gas
Hydrochloric gas
Phosgene gas
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A loose or damaged control cable
A heater control valve stuck open
A water flow control valve not opening fully
A faulty thermostatic fan
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