56 | IM-112 DECEMBER 2019
Vertical Turbine Pumps
2001299 - VTP- IOM
56 | IM-112 DECEMBER 2019
Vertical Turbine Pumps
2001299 - VTP- IOM
Vertical Turbine Pumps
Troubleshooting
Document Name: 2001299-VTP-IOM-EN Page 56 of 67
Revision 3 Copyright © 2014, Weir Floway, Inc. All Rights Reserved. Issue Date: December 12, 2014
Motor overloaded. 1 Line voltage not correct.
2 Faulty equipment used to check.
3 Specific gravity higher than design.
4 Operation at point on pump curve other than
design.
5 Motor speed too high.
6 Impellers dragging.
7 Pump in bind.
1 Check and correct.
2 Check equipment.
3 Correct specific gravity or re-evaluate
system.
4 Check performance curve.
5 Line voltage too high or incorrect
frequency.
6 Readjust.
7 Pull master switch, rotate pump by hand
to check. Disassemble the unit to
determine the cause.
Pump vibrating
excessively and
making noise.
1 Unit running backwards.
2 Pump breaking suction and pumping air.
3 Loose fasteners.
4 Badly worn motor or pump bearings.
5 Impeller(s) loose on shaft.
6 Pump & motor shafts misaligned.
7 Stress due to piping misalignment.
1 Refer to
“Hollow Shaft Driver Installation”
on page 24, step 12.
2 Lower pump or reduce capacity or
increase fluid level.
3 Check all bolts, nuts, and re-tighten.
4 Pull unit and repair.
5 Pull unit and repair.
6 Pull unit and repair.
7 Correct.
Excess wear 1 Abrasives.
2 Pump in bind.
3 Vibration.
1 Clean system.
2 Pull master switch, rotate pump by hand
to check. Disassemble the unit to
determine the cause.
3 Determine cause and correct.
Corrosion 1 Impurities.
2 Corrosive liquid.
1 Analyze the fluid.
2 Change to corrosion resistant materials.
Condition Probable Cause Remedy
Table 10-1: Troubleshooting Chart (Continued)
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