5.7 Vibration
After startup, vibration can be measured on the pump bracket at the base of the
horizontal (H), vertical (V), and axial (A) directions. The maximum expected value is 0.15
in/sec (3.8 mm/sec) RMS (ANSI/HI 9.6.4) when operating in the Preferred Operating
Range (POR) flows from 70% to 120% of the best efficiency point (BEP) (ANSI/HI 9.6.3).
Operation outside the POR, but within the Allowable Operating Range (AOR) from
minimum flow to 85% of the end of the curve increases the vibration value by 30%. If the
vibration recorded exceeds these values, shut down the pump, diagnose and fix the
problem, re-start, and re-check the vibration.
5 Commissioning, Startup, Operation, and Shutdown
20 Series e-80 INSTRUCTION MANUAL
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