Describe some of the features available on service valve wrenches

What will be an ideal response?


Some service valve wrenches use a ratchet mechanism. They may have a lever for reversing the rotation of the wrench; they can have up to four fixed sizes of square openings. The handles on service valve wrenches can be flat or offset.

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The hole depth may be indicated by the abbreviation ____ for "deep".

A. D B. DP C. DE D. DEEP

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?When reading a small-hole gauge, how is the micrometer reading taken in relation to the split in the ball, on the split, or 90°to it?

What will be an ideal response?

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When should gauges be installed on small critically charged systems?

A) Whenever the system is checked B) Only when other diagnostic means have been exhausted C) Routinely, at least every year D) Monthly to insure the charge is still correct

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Elevations are typically drawn at this scale:

A. 1/4" = 1'-0" B. 1/16" = 1'-0" C. 1/32" = 1'-0" D. 1/2" = 1'-0" E. none of the above

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