Some manufacturers recommend draining the oil from the vacuum pump after each use to prevent pump __________.
A) contamination
B) corrosion
C) drainage
D) leakage
Correct Answer:
Verified
Q5: A perfect 30"Hg vacuum is, in reality,
Q6: At a gauge pressure of 28.9"Hg, the
Q7: During the evacuation process, _of the system
Q8: Vacuum pumps are intended to be used
Q9: The presence of acid in the system
Q11: The technician should never block the vacuum
Q12: When the system is being evacuated and
Q13: In a vacuum of 29.92"Hg, the micron
Q14: For most residential systems, a _ cfm
Q15: How often should the vacuum pump oil
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