Olympus COBRA, User Manual, Page: 54 / 80

DMTA-20006-01EN, Rev. B, February 2014
Chapter 3 48
Table 5 Troubleshooting cases
Problem Possible cause Solution
The scanner does
not positively
clip onto the pipe
Incorrect number of
links
Check the setup chart (see
section “Scanner Setup Charts” on
page 64) to find the required number
of links for the outside diameter of the
pipe you are inspecting. Remember to
use the outside-diameter
measurement of your pipe. Resetup
the scanner with the correct number
of links (see section “Configuring the
Scanner Using the Setup Template”
on page 27 or section “Configuring
the Scanner Without the Setup
Template” on page 35).
Incorrect tail setting
Check the setup chart (see
section “Scanner Setup Charts” on
page 64) to find the required tail
setting for the outside diameter of
pipe you are inspecting. Remember to
use the outside-diameter
measurement of your pipe. Adjust the
tail setting as required.
Tail is not adjusted
inward to provide
the required spring
preload on the pipe
surface. With the scanner removed from the
pipe, force the tail(s) inward slightly
to provide more preload of the tail on
the pipe surface.
Pivot screws were
not tight enough and
scanner spread apart
upon installation on
pipe. Repeat the procedure found in
section “Configuring the Scanner
Using the Setup Template” on page 27
or section “Configuring the Scanner
Without the Setup Template” on
page 35.