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Section VII – Maintenance
2.0 TROUBLESHOOTING
Table 10. PIG-SIG V Troubleshooting Guide
raise after
assumed pig
passage.
Verify indicator is properly installed:
check indicator installation by removing a
set screw and looking for the groove on
Verify that the plug is fully installed:
Measure the distance the plug extends
above the THREAD-O-RING nipple
(should be 1-3/8 inches).
In the event of freezing weather: the seal
on the indicator may have been
compromised allowing water to enter the
upper portion of the plug. This water can
freeze and not allow the magnet to move.
Remove indicator and check for moisture.
wo
to the
THREAD-O-
RING Nipple.
Verify that it is indeed a TDW THREAD-
O-RING.
The hole in the pipe may be too small or
not centered.
THREAD-O-RING may be swedged due
to over-tightening of a valve or cap.
Measure the inside dimension (ID) to
ensure it is not swedged or egged.
never worked
correctly.
Verify proper THREAD-O-RING was
used for corresponding wall thickness of
pipe. Measure the height of the THREAD-
O-RING as it is mounted to the pipe and
then add that measurement to the wall
thickness of the pipe. This measurement
should not exceed 4.50 inches but needs
to be greater than 4.25 inches.
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