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8 Trouble-shooting
67 of 92
ILN / ILNC / ILNR
5211.8/08-EN
A B C D E
F G H
I
J Possible cause
Remedy
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- Excessively high back pressure
Increase speed.
If this is not possible, have the selection
of pump or impeller checked.
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- Density or viscosity of fluid handled
higher than stated in purchase order
Re-adjust to duty point.
Replace the motor.
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- Misalignment of pump and motor
Align the coupling.
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- Pump, impeller or pump nozzle blocked. Dismantle and clean the pump.
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- Discharge head of pump lower than
specified in the purchase order
Partially close the discharge-side shut-
off element.
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- Ball bearing
Replace ball bearing.
Check ball bearing installation.
Top up lubricant.
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- Excessive friction of rotating
components
Dismantle pump and check component
installation.
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- Shaft offset or deformed
Replace the shaft.
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- Impeller nut loosened
Tighten the impeller nut.
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- Pump is warped.
Reinforce piping.
Align pump set.
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- Foundation fastening
Adjust strength or properties of
foundation
Tighten foundation bolts.
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- Cavitation in the pump
Contact the manufacturer.
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- Flexible coupling elements
Replace flexible coupling elements.
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- Pipeline diameter too small
Adjust piping.
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- Non-compliance with specified coupling
distance
Adjust the distance.
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- Mechanical seal
Replace mechanical seal.
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- Excessive inlet pressure
Contact the manufacturer.
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- No check valve fitted or defective check
valve
Check the check valve.
Install a check valve.
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- Filter of auxiliary pump dirty or suction
line of auxiliary pump clogged
14)
Clean the filter.
Check suction line of auxiliary pump.
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- Suction lift higher than specified in the
purchase order
Adjust the head.
Replace pump.
Contact the manufacturer.
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- Piping clogged
Clean the piping.
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- Insufficient compressed air supply at
ejector
14)
Check and adjust compressed air
supply.
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- Incorrect operation of ejector
14)
Contact KSB
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- Discharge nozzle of ejector clogged
14)
Check discharge nozzle.
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Pressure set too high at pressure
controller
Contact KSB
Содержание ILN
Страница 1: ...In line Pump ILN ILNC ILNR Operating Manual ...
Страница 89: ...Index 89 of 92 ILN ILNC ILNR 5211 8 08 EN W Warnings 8 Warranty claims 7 ...
Страница 90: ......
Страница 91: ......