TROUBLESHOOTING GUIDE
The following is a list of operating symptoms, their probable causes and the actions to
resolve them.
*
refer to associated transducer manual
SYMPTOM CAUSE ACTION
Loss of Echo ( LOE )
display will flash
CAbL / LOE, neon L1 will
flash but no pulsing is felt
on the transducer face
open circuit check transducer wiring *
defective transducer check maximum
temperature P-66 against
transducer rating *
try a substitute
display will flash
CAbL / LOE, neon L1
remains off and no
pulsing is felt on the
transducer face
short circuit check transducer wiring *
defective transducer or
circuit board
check maximum temp.
P-66 against transducer
rating *
try a substitute
display will flash LOE,
neon L1 will flash, pulsing
is felt on transducer face
level or target is out of
range. Under optimum
conditions maximum range
is 15 m plus 20% of P-3
check transducer
specifications *
check calibration
parameters
application too dusty or
steamy. Under these
conditions range may be
adversely affected
re-aim transducer *
use polyethylene foam
faced transducer for dusty
applications *. DO NOT
USE ON WET
APPLICATIONS
try using a longer range
transducer
if condition occurs only
during filling, the
transducer face may be
covered. Shipping
cardboard or material
build-up on transducer face
increase fail-safe timer,
P-75
clean
move transducer to better
location *
mount in standpipe *
PL-443 8 – 3
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