Nexo GEO D - Manual (Page 64)

Page 64/97 GEO D RIGGING PROCEDURE
• Rotate the fingerwheel clockwise until the chain is taught;
• Make a final check that the Chain Lever Hoist is correctly installed;
• Rotate the lever to apply the pull-up force to the bottom of the array; notice that, as the chain gets
shorter, the cabinets in the array close together to the angles set by the angle adjustments push-
pins;
As the chainload tensions, ensure that no twisting occurs on the chain;
• When all of the cabinets are closed together, required force to rotate the lever becomes much
stronger. This is the indication that the angles have been correctly set;
• store the surplus chain in the chain bag supplied. The chain bag should be clipped to the chain.
IMPORTANT
DO NOT attempt to force on LEVA750 or LEVA1500 lever once you feel it resisting
strongly to rotation; you might damage GEO D flying system by doing so
IMPORTANT
DO NOT attempt to make any changes to the angle adjustements when the compression
pull-up force is applied.
5.7.6 Positioning the cluster
• Lift the GEO SUB array to the height determined in GeoSoft (GeoSoft array height definition is for
the top surface of the topmost cabinet);
• Adjust the bumper angle as determined in GeoSoft by lowering or lifting rear motor hoist (so that
the front height does not change);
• Check all GEO SUB angles with an inclinometer;
• Once the bumper is in definitive position a secondary safety steel must be fitted (this secondary
safety steel should link the bumper to a suitable point in the supporting structure);
IMPORTANT
The requirements for secondary safety systems vary with territories. However, the
secondary safety steel MUST have a SWL equivalent to or greater than that of the rigging
system.
APPLYING COMPRESSION AND SETTING BUMPER ANGLE