PA Rigging / L-Acoustics / K3 / Adding a Pullback with K3-RIGBAR

K3 — Adding a Pullback with K3-RIGBAR

Rigging a K3-RIGBAR pullback off a second motor to control the site angle of a flown K3 array. Reference: LA-K3-PULLBACK-01. Follow in order — this is a sequential rigging procedure, not an independent checklist; steps depend on the ones before them.

Minimum 2 operators.
Hardware needed: 2× ∅19 mm shackles, WLL 3.25 t; LA-SLING2T two-leg lifting chain (DIN EN 818-4, 8 mm).
Flown with K3-RIGBAR as main lift: safe limit 16.
Pullback must not exceed a 90° negative site angle.
Pick-up points must be aligned with the linking points.
Additional/secondary safety must be either a two-leg bridle sling with a pickup point higher than the LA-SLING2T, or two separate safety slings.
Prerequisite: an array already flown with K3-BUMP and K3-BAR (see the K3-BUMP/K3-BAR flying guide) — optionally, a second K3-RIGBAR can be secured on the top enclosure to replace K3-BUMP as the main lifting accessory.

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Adding the Pullback

Raise the array. Secure the LA-SLING2T to the second motor hook — make sure the chains are not twisted. Attach K3-RIGBAR to the sling using the two 3.25 t WLL shackles, through the interior holes of the bar (the external holes are dedicated to additional safety only). Attach the K3-RIGBAR to the bottom enclosure using the rear rigging hole — do not use the rear rigging middle hole. Adjust the height of the pickup point so the rear pick-up point is never raised above the front pick-up point and the chains stay as vertical as possible.

Source: L-Acoustics K3 Owner's Manual, EN, v4.1. Rigging procedures, pp.81-83.