LSI-Robway RCI-1550 HRT, Instruction Manual

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Page 29 of 72
The potentiometer gear for length sensing may now be re-engaged into mesh with the driver
gear. Ensure that all gear locking screws are secure. Normally it is necessary to ensure that
the boom is fully retracted or, that machine is fully home. The pot gear should be turned by
hand, in the direction driven when winding in cable, until the end stop is felt. Turn gears
forward one quarter (¼) turn and allow to engage into mesh. Further adjustments will then
relate to the length indication system.
6.3.4 Pay-out Cable
With the pay-out cable attached to the boom tip stand-off bracket, select positions for the
intermediate cable guides provided, one for each telescoping section and one or more for the
main boom allowing 9’-12’ between the drum and the nearest cable guide. Measure the
distance from the cable to the sides of the booms, record lengths and mark the positions for
the guides. Cut and weld the guides to the boom after removing the cable. Refit the cable
through the eyes and anchor to the post using the clamp provided. Adjust the position of each
eye so that the cable passes through just touching the top of the ring. When booms deflect and
pads wear the cable will take up a lower position in the eye.
6.4 Anti-Two-Block
( if installed )
6.4.1 Rectangular type Anti-two Block switches
The switches require fitting at an offset angle to ensure correct operation throughout the full
working angle range of the boom. Fix the switch to the bolt and lock the nuts. Consult
installation drawings at the rear of this manual.
6.4.2 Tubular type Anti-two Block switches
Fix the anti-two-block switch mounting bolt by welding it to the boom head preferably so that
the bob weight (when suspended from the switch) can be fitted to the static hoist rope below
the rope anchor. Check that the switch works correctly as the boom luffs throughout its
working range. Consult installation drawings at the rear of this manual.
6.4.3 Multiple Anti-two Block switches
Additional switches (for fly-jibs) can be added. Connection is via plug and socket at the
Junction box adjacent to the main boom head.
Consult installation drawings at the rear of this manual.
File : 1550-Telescopic-HRT.DOC
Issue Date: - 01/08/05