A B C D E F G H I
J K L Possible cause
Remedy
2)
-
-
-
-
-
-
-
✘
-
-
✘ ✘
Defective accumulator
Check integrity/replace, if necessary.
-
-
-
-
-
-
✘
-
-
-
-
- Defective mechanical seal
Replace.
✘
-
-
-
-
-
-
✘
-
✘
-
- Suction-side pressure switch set
incorrectly or defective
Check setting.
-
-
✘ ✘ ✘
-
-
✘ ✘ ✘ ✘
- Defective check valve in the pressure
booster system
Check, replace sealing element as
necessary.
-
-
-
-
✘
-
-
-
✘ ✘
-
✘
Water extraction higher than stated
in the purchase order
Contact KSB.
-
✘
-
-
-
-
-
-
✘
-
-
✘
Motor protection switch triggered
or set incorrectly, or pump seized
Compare setting with the motor's
rating plate data.
-
-
-
-
-
-
-
-
-
-
✘
- Delay setting too short
Check setting.
-
✘
-
-
-
-
-
-
-
-
-
- Mains supply interrupted
Check and remedy defect/check fuse.
-
✘
-
-
-
-
-
-
-
-
-
- Control current fuse tripped (control
cabinet)
Determine cause and reset.
-
✘
-
-
-
-
-
-
✘
-
-
- Main fuse on (owner-supplied)
distribution board loose or blown;
fuses possibly too small or too fast
Check fuses and replace as
necessary. Measure the motor
current.
-
-
-
-
-
-
-
-
✘
-
-
- Intermittent voltage fluctuations
Press reset and fault
acknowledgement key.
-
✘
-
-
-
-
-
-
-
-
-
- Phase failure
Check individual phases; replace
fuse, if necessary.
✘
-
-
-
-
-
-
-
-
-
-
- Inlet tank empty or float switch
defective / disconnected
Check and remedy defect.
2)
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!
9 Trouble-shooting
Surpress Feu SFE.3
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