PL-513 107 06/28/99
TROUBLESHOOTING GUIDE
The following is a list of operating symptoms, their probable causes and the actions to
resolve them.
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
defective transducer
check transducer wiring *
check maximum
temperature P-66 against
transducer rating *
try a substitute
display will flash CAbL /
LOE, neon L1 will flash,
and pulsing is felt on the
transducer face
transducer does not have a
built-in temperature sensor,
and SW2 is set to TRANS.
See page 15.
Change SW2 switch on
motherboard
display will flash CAbL /
LOE, neon L1 remains off
and no pulsing is felt on
the transducer face
short circuit
defective transducer or
circuit board
check transducer wiring *
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
application too dusty or
steamy. Under these
conditions range may be
adversely affected
if condition occurs only
during filling, the transducer
face may be covered.
Shipping cardboard or
material build-up on
transducer face
check transducer
specifications *
check calibration
parameters
re-aim transducer *
use polyethylene foam
faced transducer for dusty
applications *. DO NOT
USE ON WET
APPLICATIONS
try using a longer range
transducer
increase fail-safe timer, P-
75
clean
move transducer to better
location *
mount in standpipe *
* refer to associated transducer manual
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