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Related Flashcards
Cards In This Set
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The lights dim on compressor start up.
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High voltage, hight current draw or low line voltage amp draw.
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Measurement taken at point A, with a manometer and a velometer. what will happen when the fan starts up.
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Manometer pressure will go up. velometer prssure will go down.
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Where do you install a P-trap on a double suction riser.
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Larger suction line
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On a double suction line riser, poor oil return on low load
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Over sized smaller suction riser.
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Room with high humidity, ODA 30F. how do you decrease humidity.
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Open return air more.
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When you increase the heat anticipator resistance:
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Long heating cycles
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The vapor barrier of a walk in cooler will be located
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Between the outer wall and the insulation
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What components is removed first when replacing a shaft seal on a inline booster pump
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Motor
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Chilled water coils have the following comfiguration.
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Cool entering bottom, warm leaving top.
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A closed loop water system will have chemical pot located
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System supply
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VAV box pneumatically controlled, not working. check in order.
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T-stat, actuator, linkage
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What will happen if you remove vapor from R-404A
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Fractionation
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Where do you install the trap in a double riser.
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The larger line
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After replacing a hermetic compressor test to a pressure of
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Low side components or 150 psi
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A pneumatic valve is in the full open position. what is the cause.
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Ruptured diaphragm
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