KSB Ama-Drainer 4 Series, Installation & Operating Manual

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8 Trouble-shooting
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Ama-Drainer 4../5..
8 Trouble-shooting
WARNING
Improper work to remedy faults
Risk of injury!
▷ For any work performed to remedy faults, observe the relevant information
given in this instruction manual and/or in the product literature provided by the
accessories manufacturer.
NOTE
Before performing any work on the pump's internal parts during the warranty
period please always consult the manufacturer. Our after-sales service will be at
your disposal. Non-compliance will lead to forfeiture of any and all rights to claims
for damages.
If problems occur that are not described in the following table, consultation with the
KSB customer service is required.
A Pump is running, but does not deliver
B Insufficient flow rate
C Excessive current/power input
D Insufficient discharge head
E Vibrations and noise during pump operation
Table 10: Trouble-shooting
A B C D E Possible cause Remedy
6)
- ✘ - - - Pump delivers against an excessively high
pressure.
Open the shut-off valve to re-adjust to duty point.
- ✘ - - - Gate valve in the discharge line is not fully
open.
Fully open the gate valve.
- -
✘
-
✘
Pump running in off-design conditions (part
load / overload) Check the pump's operating data.
✘
- - - - Pump or piping are not completely vented. Clean vent hole 5 B in pump casing 101.
✘
- - - - Pump intake clogged by deposits Clean the intake, pump components and lift check
valve.
- ✘ - ✘ ✘ Supply line or impeller clogged Remove deposits in the pump and/or piping.
- - ✘ - ✘ Dirt/fibres in the clearance between the
casing wall and impeller; sluggish rotor. Check whether the impeller can be easily rotated;
clean the hydraulic system, if required.
- ✘ ✘ ✘ ✘ Wear of internal components Replace worn components by new ones.
✘ ✘ - ✘ - Defective riser (pipe and sealing element) Replace defective riser pipes and sealing elements.
- ✘ - ✘ ✘ Impermissible air or gas content in the fluid
handled Contact the manufacturer.
- ✘ ✘ ✘ ✘ Wrong direction of rotation If the pump set is running in the wrong direction
of rotation, check the electrical connection and the
control system, if necessary.
- -
✘
- - Operating voltage is too low. Check mains voltage.
Check cable connections.
✘ - - - - Motor is not running because of lack of
voltage.
Check electrical installation, inform electric utility
company.
✘ ✘ - ✘ - Motor is running on 2 phases only. Replace the defective fuse. Check the electrical
cable connections.
✘ - - - - Motor winding or electric cable are defective. Contact KSB's pump service.
6) The pump pressure must be released before attempting to remedy faults on parts which are subjected to pressure.
Disconnect the pump from the power supply and let it cool down before working on it.