Malfunctions / Trouble shooting
* The cause of the malfunction is to be determined by an expert.
13
Pump doesn't
prime
Flow rate is
too weak
Pump
is noisy
Pump/motor
doesn't start
Motor is noisy
Reason
Solution
Suction line is leaky
Eliminate the leak
X
X
Lid is leaky
Check lid for tightness
X
X
X
X
X
Mechanical seal is leaky
Replace it (to be done by an
expert)
Excessive suction height
Reduce suction height
Defective bearing
Replace bearings
*
X
X
X
X
No water in pump casing
Fill pump casing with water
Suction line not below
water level
Lower the suction line
Strainer is clogged
Clean the strainer
Use a suction line with larger
dia.
Suction and pressure line
clogged
Clean suction and pressure
line
Foreign object in
the pump
Check and clean pump, strainer
and impeller
X
X
Power supply interrupted
Check power supply and fuses
Pump is blocked
(due to sand)
Stop power supply and make
sure pump turns freely,
by using a screwdriver
*
X
X
X
X
X
X
Pump
leaks
X
Dia. of suction line
too small
Defective condenser
Replace condenser
X
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