KSB GIW MDX User Manual

MDX [en-US]
52
Troubleshooting Table 2 / 2
Pump delivers insufficient flow rate Motor is overloaded Excessive discharge pressure Increase in bearing temperature Leakage at the pump Excessive leakage at the shaft seal Vibration during pump operation Excessive temperature rise in pump
Cause
Remedy
For further information consult the GIW Technical
Series at http://giwindustries.com
■ ■ ■ ■
Insufficient suction head (NPSH available ) Check sump level. Raise if necessary.
Fully open any valves in the suction line.
Check suction line friction loss calculations. Alter
design if necessary.
Contact your GIW / KSB representative for further
advice.
■
Density or viscosity of the fluid pumped is higher
than expected.
Adjustment may be needed to system design and/or
pump operating conditions.
■ ■ Speed is too high. Reduce the speed.
■ ■ ■
Worn parts.
Loose bolts, seals or gaskets.
Check for worn parts. Replace as needed.
Tighten the bolts and/or fit new seals and gaskets if
needed.
■
Incorrect packing material or adjustment.
Incorrect seal water pressure (too high or low).
Correct adjustment. Replace parts as needed.
(See GIW Tech Article on this subject.)
■ ■ ■ The unit is misaligned. Check the coupling. Re-align if required.
■ ■
Bearing failure. Replace bearings. Check lubricant for contamination.
Inspect and repair bearing seals as needed.
Contact a GIW service center for factory rebuild
services.
■
Insufficient or excessive quantity of lubricant or
unsuitable lubricant.
Correct according to maintenance manual
recommendations.
■
Insulating or hot ambient conditions Remove insulation and/or dirt from bearing assembly.
Improve ventilation around pump.
■ Operating voltage is too low. Increase the voltage.

KSB GIW MDX Specifications

General

Brand	KSB
Model	GIW MDX
Category	Industrial Equipment
Language	English