Back to FlashcardsMechanical Engineering / Quiz 76 Heating and Air Conditioning Service
Quiz 76 Heating and Air Conditioning Service
This deck covers key concepts related to heating and air conditioning service, including tools, indicators, and system components.
Electronic leak detector
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Key Terms
Term
Definition
Electronic leak detector
Detects leaks by producing a sound or light signal.
A/C system evacuation
Uses a vacuum pump to remove air and moisture from inside of the system.
Bubbling sight glass
Indicates the A/C system is low on refrigerant and that air is in the system.
Cloudy sight glass
May indicate the drying agent in the receiver-drier or accumulator has broken down and is circulating through the system.
Schrader service valve
Is a spring-loaded valve, similar to the air valve in a tire.
Pressure gauge assembly
Typically consists of two pressure gauges, a manifold, two on-off valves, and three service hoses.
Related Flashcard Decks
| Term | Definition |
|---|---|
Electronic leak detector | Detects leaks by producing a sound or light signal. |
A/C system evacuation | Uses a vacuum pump to remove air and moisture from inside of the system. |
Bubbling sight glass | Indicates the A/C system is low on refrigerant and that air is in the system. |
Cloudy sight glass | May indicate the drying agent in the receiver-drier or accumulator has broken down and is circulating through the system. |
Schrader service valve | Is a spring-loaded valve, similar to the air valve in a tire. |
Pressure gauge assembly | Typically consists of two pressure gauges, a manifold, two on-off valves, and three service hoses. |
Performance test | Indicates A?C system condition by measuring system pressures with the engine running. |
Charging System | Usually contains a vacuum pump, pressure gauge set, oil injection cylinder, and a charging tank of refrigerant. |
Stem-type service valve | Manual valve that is opened and closed by screwing the valve stem in or out. |
Oil -streaked sight glass | Denotes a low refrigerant level, which is allowing excessive compressor oil to circulate through the system. |