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L Possible cause
Remedy
6)
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Start-up pressure set too high
Check setting.
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✘ Pressure transmitter set incorrectly or
defective
Check setting.
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✘ Pre-charge pressure of the accumulator
too low
Restore nitrogen cushion.
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✘ Defective accumulator
Check integrity/replace, if necessary.
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Defective mechanical seal
Replace.
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Suction-side pressure switch set
incorrectly or defective
Check setting.
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Defective check valve in the pressure
booster system
Check, replace sealing element as
necessary.
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✘ Water extraction higher than stated in
the purchase order
Contact KSB.
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✘ Motor protection switch triggered or set
incorrectly, or pump seized
Compare setting with the motor's rating
plate data.
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Delay setting too short
Check setting.
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Mains supply interrupted
Check and remedy defect/check fuse.
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Control current fuse tripped (control
cabinet)
Determine cause and reset.
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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.
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Intermittent voltage fluctuations
Press reset and fault acknowledgement
key.
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Phase failure
Check individual phases; replace fuse,
if necessary.
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Inlet tank empty or float switch
defective / disconnected
Check and remedy defect.
Содержание Hydro-Unit Premium Line F
Страница 63: ......