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KSB CORA 1C User Manual

KSB CORA 1C
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Submersible motor pumps (100 mm)
8 Trouble shooting
8.1 Motor
Motor cannot be started
Motor fails, fuses have blown or motor has tripped
Overload protection is actuated after long operation
Repeated starting of the motor
Motor is not cut off (automatic control is not in
function). Applicable only to pressure booster pumps.
Possible cause Remedies
Voltage is too low / no voltage Retighten loose connections, Contact
electrical supply authority.
Motor winding or supply cable is damaged Repair / replace motor, cable
Fuses or automatic switches are not suitable Replace fuse or switch
Supply voltage is either too high or too low Change either supply or motor if wrong
than rated internal connections are made
Failure of a phase (single phasing in 3 Rectify loose connections. Replace fuses.
phase motor) Consult electrical authority.
Switchgear positioned in too warmer place Protect switchgear from heat
Control switch is not in function Repair / replace the control device
(level switch / level guard)
Leakage in the unit / faulty pressure gauge Trace leakage and seal it
Extremely high momentary load Dismantle pump, clean & repair
(pump is silted up deeply etc.)
Contaminated filter, excessive wear in Dismantle pump, clean & repair
pumping unit
Incorrect co-ordination of pump & pressure Correct the co-ordination
tank (applied to booster pumps)
Pump components are clogged. Pump should be repaired. To prevent such
incidents the pump-set should not be idle
for a long time. It should be operated at least
once in a week.
8

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KSB CORA 1C Specifications

General IconGeneral
BrandKSB
ModelCORA 1C
CategoryWater Pump
LanguageEnglish

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