Grundfos IO 113, Installation And Operating Instructions Manual

Page: 23 / 36

English (GB)
23
8. Fault finding the product
WARNING
Electric shock
Death or serious personal injury
- Before any fault finding, make sure that
the fuses have been removed or the
main switch has been switched off. It
must be ensured that the power supply
cannot be accidentally switched on.
OBS: terminals T1 and T2 are normally
connected to 220-240 VAC. Terminal I3
may be connected to up to 600 VAC.
Fault Cause Remedy
Green indicator light is off when
the pump is running.
Conductor for contactor status
has not been connected to
terminals K1 and K2.
Connect the conductor.
Yellow indicator light is flashing
at startup.
This indicates configuration
setting conflicts. The DIP switch
settings are incorrect.
Reset the DIP switches.
Yellow indicator light is
permanently on.
The connection between IO 113
and SM 113 is interrupted, or the
setting of DIP switches 1 and 2
is incorrect.
Re-establish the connection or
reconfigure DIP switches 1
and 2.
Red indicator light is flashing.
Motor winding or bearing
temperature is too high, or
missing signal from bearing
sensor.
Check connection to SM 113.
Yellow indicator light is
permanently on. The warning limit for stator
insulation resistance is too low.
Set a higher limit using the
potentiometer. See section
4.1 Potentiometer .
New oil does not show 4 mA on
analog output 1.
The oil in the oil chamber has
not been changed completely, or
it was changed to another type. Calibrate IO 113 for the new
oil, see section
10. Calibration .
The water-in-oil sensor
previously indicated water in the
oil, but now it indicates less than
5 % water in the oil.
The power supply to IO 113 has
been interrupted. Let the pump run for some
time and check again.
Yellow indicator light is flashing.
• WIO sensor is disconnected.
• WIO sensor is defect.
• WIO sensor short circuit.
• Wrong configuration (only
applications with SM 113).
Reconnect the sensor or
replace the sensor.
For SM 113, choose the
correct setting of the DIP
switches.
SM 113 cannot detect the
sensor. Only applicable to non-
Ex applications with DIP switch
10 in the OFF position.
Fault in signal from sensor.
Re-establish the signal, e.g.
by changing the setting of DIP
switch 9 or by securing the
wire connection from sensor
to SM 113.