User's Manual

_
PL-550 41
TROUBLESHOOTING _
TROUBLESHOOTING
The following is a list of operating symptoms, their probable causes and the
actions needed to resolve them.
SYMPTOM CAUSE ACTION
display reads level or target is out of
range
check specifications
check parameters
application too steamy,
under these conditions
range can be adversely
affected.
re-locate IQ Radar 160
increase fail-safe timer,
P070
material build-up on
antenna
clean
re-locate IQ Radar 160
location or aiming:
-poor installation
-moved by material
or vibration
-flanging not level
-standpipe not vertical
relocate or re-aim
IQ Radar 160 for
maximum echo
confidence, P805
antenna malfunction:
-temperature too high
-physical damage
-excessive foam or skin
inspect
use foam deflector or
stilling well or relocate
Reading does not
change, but the level
does
IQ Radar 160 processing
wrong echo, i.e. vessel
wall, or structural member
re-locate IQ Radar 160
check standpipe for
internal burrs or welds
increase blanking, P800
raise short measurement
confidence threshold,
P804
*refer to associated manual
… continued