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10 Cards in this Set
- Front
- Back
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When the service valve is fully back seated, what port is closed?
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Service/gauge
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the service valve located at the receiver outlet is known as?
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king valve
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to isolate the compressor from the rest of the sealed system you should fully?
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Front seat both the suction and discharge service valves
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Which service valve should never fully front seat while the system compressor is in operation?
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Discharge service valve
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What will happen if you fully front seat the receiver king valve while the system compressor is in operation?
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Low side operating pressure will fall, if allowed to run long enough the compressor will pump all the refigerant into the highside of the system pulling the low side into a vacuum.
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When a service valve is fully front seated what port is closed?
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line
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When the service valve is in the mid-seated position, what port is closed?
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Nothing,all ports are open
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What is the normal operating position of the service valves?
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Fully backseated
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to minimize refrigerant loss when removing manifold gagues hoses from the system using service valves what is the sequence of stepr of removing?
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Back seat the discharge service valve; backseat both manifold gauge valves; allow the compressor to draw the refrigeratant into the system low side; back seat the suction service valve then remove both manifold hoses.
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What will happen if the suction service valves is fully front seated while the system compressor is running?
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Low side of the compressor and low side manifold gauge only will fall into a vacuum, if the compressor is allowed to run you can charge refrigerant vapor into the system faster. all of the refrigerant is trapped on the highside and low side of the system.
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