NAR300 system for high temperature
Troubleshooting
Hauser
41
7.3
Operation check
7.3.1
Operation check flow diagram
Take conductivity sensor out
to air and alarm occurs.
Alarm
occurs in pit.
Alarm occurs
a!er returning sensor.
Alarm occurs
a!er taking out
from pit.
Return the sensor
to the original position.
Remove H+ and H-
cables and confirm
their voltage is
22 ±2VDC?
Alarm is activated
normally.
Close
Close
Start
Float sensor and
transmitter failure
Alarm operation
is abnormal.
Request return.
Remove the float
sensor from pit and
clean the sensor.
Transmitter failure
Clean conductivity
sensor pin.
Yes
Yes
No
Yes
No
No
Yes
No
A0048099
