Troubleshooting - DAB KC Serie Instrucciones Para La Instalación Y El Mantenimiento

9.

TROUBLESHOOTING

ATTENTION!
Before opening the terminal board cover, ensure that the electric power supply has
been disconnected.
The pumped liquid may be at a very high temperature and high pressure. Before
removing or dismantling the pump, the system must be emptied or the interception
valves on both sides of the pump must be closed.
FAULTS
1. The pump is not working.
2. Tripping of the automatic
motor protection switch (it trips
immediately when power is
turned on).
3. The motor protection switch
trips occasionally.
ENGLISH
Error conditions
CHECKS
(possible causes)
A. Interruption in the power supply.
B. Burnt out fuses or motor
protection tripped.
C. Fault in the control current
circuit.
D. Fault in the contacts of the
motor protection switch or the
magnet coil.
A. Burnt out fuses.
B. Loose or faulty connection of
the cables.
C. Faulty motor winding.
D. Mechanical blockage of the
pump.
E. Setting of the automatic motor
protection switch is too low.
A. Setting of the automatic motor
protection switch is too low.
B. Periodic interruption in the
power supply.
C. Periodically low voltage.
20
REMEDIES
A. Restore the power supply.
Check that the cables and their
connections are not faulty or
loose.
B. Check that the cables and their
connections are not faulty, then
change the fuses.
C. Repair or replace the control
current circuit.
D. Replace the contacts of the
automatic motor protection
switch, the magnet coil, or the
entire automatic motor protection
switch.
A. Check that the cables and their
connections are not faulty, then
change the fuses.
B. Check that the cables and their
connections are not faulty, then
change the fuses.
C. Repair or replace the motor.
D. Switch off the power and clean or
repair the pump.
E. Set the motor protector according
to the rated current of the motor
(I ).
1/1
See the identification plate.
A. See 2. B
B. See 2. B
C. Check that the cables and their
connections are not faulty or
loose. Check that the pump
power cable has the correct
section.