44. Consider the math
• 9.75” diameter impeller
⇒ 30.63” travel per rotation (at the
vane tips)
45. Consider the math
• 9.75” diameter impeller
⇒ 30.63” travel per rotation (at the
vane tips)
• 1150 rpm
46. Consider the math
• 9.75” diameter impeller
⇒ 30.63” travel per rotation (at the
vane tips)
• 1150 rpm
⇒ 69,000 turns per hour
47. Consider the math
• 9.75” diameter impeller
⇒ 30.63” travel per rotation (at the
vane tips)
• 1150 rpm
⇒ 69,000 turns per hour
• 30.63” x 69,000
= 2,113,470 inches/hour
48. Consider the math
• 9.75” diameter impeller
⇒ 30.63” travel per rotation (at the
vane tips)
• 1150 rpm
⇒ 69,000 turns per hour
• 30.63” x 69,000
= 2,113,470 inches/hour
= 33.36 mph
49. Consider the math
• At 1150 rpm, the vane tips are
moving at 33.36 mph
• At 1750 rpm, the vane tips are
moving at 50.76 mph
50. Consider the math
• At 1150 rpm, the vane tips are
moving at 33.36 mph
• At 1750 rpm, the vane tips are
moving at 50.76 mph
• Treat your impeller like you’d treat
your automobile and keep it well-
aligned
51. Who gets the blame
when your pumps
can’t keep up?
74. Routine pump inspections: Quarterly checks
• Clearances
• Lubrication – checking more often won’t hurt
• Alignment
• Wear – record performance and track trends
• Solids
75. Routine pump inspections: Semiannual checks
• Clearances – the bare minimum if you want to avoid trouble
• Lubrication
• Alignment – for belt drives
• Wear
• Solids
81. If it’s one problem, it’s often more than one
Misalignment leads to lubrication problems
Wear encourages problems with solids
Clearance problems accelerate wear
Solids can cause wear which leads to clearance problems
84. Keep the CLAWS at the ready
Clearances – Lubrication – Alignment – Wear – Solids
85. Questions?
• Thanks for your time and attention!
• This presentation can be found at
gongol.net/presentations
• Brian Gongol
DJ Gongol & Associates
• 515-979-2837 mobile
• 515-223-4144 office
• brian@gongol.net
• @djgongol on LinkedIn, Twitter, and
Facebook
86. Credits
• Pump alignment images used courtesy of the Gorman-Rupp Company
• Some icons were automatically inserted by PowerPoint
• All other images (including all product-specific and project site photos) are the
original work of the author
• Copyright 2023 by Brian Gongol, all rights reserved