Q12. Bearings run noisily ie steady high-pitched or intermittent / continuous low-
pitched noise or intermittent rumble / rattle and or clicks, Intermittent
squeal or high-pitch tone
A12. A. Stead
y
hi
g
h-
p
itched tone
•
•
•
•
B. Continuous or intermittent low-
p
itch tone
•
•
•
C. Intermittent rattles
,
rumbles
,
and/or clicks
•
•
•
•
D. Intermittent s
q
ueal or hi
g
h-
p
itch tone
•
•
•
•
•
Q13. Pump overheats or seizes, or both
A13.
•
•
•
•
•
•
•
•
•
214 Appendix A
Q14. Pump cavitates when the NPSH-a ...
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