How often should the vacuum pump oil be changed?
A) every 3 months of operation
B) every other time it is used
C) before each use
D) every 8 hours of operation
Correct Answer:
Verified
Q10: Some manufacturers recommend draining the oil from
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
Q16: If moisture is not removed from the
Q17: Freezing moisture in the system can lead
Q18: Industry and Federal guidelines require that the
Q19: _ will not change from a vapor
Q20: Noncondensable gases have a negative effect on
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