Why should a system be leak tested after it has been repaired before it is charged?

What will be an ideal response?


Systems with leaks cannot be properly evacuated; air will just suck in through the leak. Recovering refrigerant after it has been added adds to the time required.

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What causes the ridge at the top of a cylinder?

What will be an ideal response?

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The cost of equipment for manufacturing mineral products in a harsh environment is $2.3 million. If the overall cost factor for this type of facility is 2.25, what is the estimated total plant cost?

What will be an ideal response?

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Which type nut is used with a cotter pin?

A) Bead nut B) Nylon ring nut C) Castle nut D) Smooth nut

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all leaf springs are mounted to the vehicle lengthwise

a. true b. false

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