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All four
wheels do not
remain on the
inspection
surface.
Inspection surface is
interfering with underside
of the drive module
housing(s) due to excessive
steering on curved
inspection surfaces with
OD less than 2.1 m (84 in).
Do not steer crawler so severely. Do not
use the crawler outside of its intended use
(see “Intended Use” on page 4)
.
8.6. Retrieval of a Stranded Crawler
Should the
NAVIC
crawler become inoperative while out of reach, first attempt, the
solutions offered in this manual
(see “Troubleshooting” on page 148)
If troubleshooting does not rectify the issue, it may be necessary to retrieve the
crawler manually. To do so:
1.
Press the E-Stop push-button. This will turn the crawler power off.
NOTE:
Under normal conditions, the crawler should begin descending slowly.
2.
If the crawler stops descending due to some kind of impediment, use a ladder,
man lift or scaffolding to retrieve the crawler.
NOTE:
FALLING OBJECT HAZARD
. It is
CRUCIAL
that the tether system remains active
while retrieving the crawler (i.e. a mechanism or person must be continuously
taking up slack in the tether).
WARNING!
FALLING OBJECT HAZARD
.
The tether system must remain active while retrieving
the crawler
(i.e. a mechanism or person must be
continuously taking up the slack in the tether)
.