K1 — Flying with K1-BUMP (Caterpillar Method)

Flying a K1/K1-SB array by adding enclosures one at a time directly off their individual K1-PLA dolly boards, instead of pre-building a block on K1-CHARIOT. Reference: LA-K1-CATERPILLAR-FLY-01. Follow in order — this is a sequential rigging procedure, not an independent checklist; steps depend on the ones before them.

Rigging accessories: 4× 22 mm shackles WLL 3.25 t, K1-BUMP, K1-PLA.
Minimum 3 operators.
This is an alternative to the block-based flying method — enclosures are added one at a time, each shipped on its own K1-PLA dolly board, instead of pre-building a block of four on K1-CHARIOT first.
Use available holes to implement a secondary safety.
Use a strain relief on cables to avoid mechanical stress at connector locations from cable weight.
Same procedure applies to K1-SB.
Prerequisite: prepare K1-BUMP; if necessary, secure LA-RAK II AVB on K1-BUMP.

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Lining Up & Presetting

Line up K1-BUMP and all enclosures with their dolly boards at the rigging location. Raise K1-BUMP in front of the first enclosure to more than 0.7 m / 2.3 ft height. On both sides of each enclosure, make sure the automatic locking system button is deactivated — if pressed, pull to disengage the latch (yellow sticker visible when deactivated, audible click). On both sides of each enclosure except the top one, lift out the rear rigging arm and secure it to the adjacent enclosure. On both sides of each enclosure, preset the inter-enclosure angles by sliding out the angle arm to the desired angle hole and inserting the ball-locking pin — select the 0° angle for the top enclosure to align it with K1-BUMP's site angle.

Flying the Top Enclosure

On the top enclosure, lift out both rear arms and secure them to K1-BUMP's rear rigging points using the K1-BUMP ball-locking pins. On both sides of each K1-PLA, pull on the lanyards to remove the ball-locking pins. Raise the array until the top enclosure is flown and K1-BUMP is in horizontal position — K1-PLA separates from the top enclosure. With two people (one on each side), lift the front of the top enclosure and secure its two front rigging arms to K1-BUMP using the K1-BUMP ball-locking pins.

Flying Successive Enclosures

Raise the array until the second enclosure is flown — have one person hold the last enclosure to prevent rough array movements. With two people (one on each side), lift the front of the second enclosure and secure both front rigging arms to the top enclosure. On each side of the top enclosure, press the angle locking button to lock the inter-enclosure angle — the latch slightly retracts. Repeat raising the array, securing the next enclosure's front rigging arms, and locking the inter-enclosure angle until all enclosures composing the array are flown — check all ball-locking pins are fully inserted and no yellow sticker is visible on the rear rigging arms. Fly the array at the desired trim height and adjust the site and azimuth angles — verify the automatic locking system is activated on every latch except the bottom enclosure (no yellow stickers visible).

Source: L-Acoustics K1 Owner's Manual, EN, v4.0. Rigging procedures, pp.101-105.