Technical Manual
72
2. Using the main system controls, or the manual inverter, push the
rod out, observing the travel of the end of the rod to ensure it does
not come in contact with anything. At the same time slowly tighten
the roller a further ¼ turn during the first 0.5m of push.
3. When the cone-rod is out by 1-1.5m, stop the push.
4. Observe the angle that the cone-rod has left the base. If the rod is
still curving under the thruster, then there is not enough
straightening action taking place. If it is now curving away from the
under the thruster, there is too much straightening action.
5. If the cone-rod is not being straightened enough, retract the rod
until the cone-rod coupling is back in the cone-up sensor, while
tightening the middle roller a further 1/8 of a turn. Remember that
using the manual inverter requires close observation to stop
the cone in the correct position. Perform another push without
adjusting the roller, and return to operation 4 (observing the angle).
6. If the cone-rod is being bent away from under the thruster, retract
the rod until the cone is back in the cone-up sensor, while loosening
the middle roller by 1/8 of a turn. Remember that using the
manual inverter requires close observation to stop the cone in
the correct position. Perform another push without adjusting the
roller, and return to operation 4 (observing the angle)
7. With the straightener finally set up satisfactorily, tighten the lock nut
on the adjuster bolt to lock it in position, ensuring that this action
does not further move the bolts.
8. One final push should be performed to be sure that the bolt has not
been moved, and that the cone-rod is now straight.
Maintenance
The straightener should be inspected regularly to ensure that there is no
distortion in any of the parts, and that all the fastenings are present and tight.
It should also be washed down with clean water regularly to remove any
debris from the rollers and scraper block. It is good practice to spray the
rollers with a thin oil to maintain lubrication. It is preferable to get this oil
onto the shafts through the centre of the roller as opposed to on the
circumference, as this can result in the roller ceasing to rotate, and the rod
slipping in the grooved edge.
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