DTD CUB 18 Manuel - Page 2

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Fitting the Harness

The backplate that forms part of the compensator is supplied with a

high-quality harness that is threaded through in a way that ensures proper

system functioning. Do not change the way the harness is fed through the

backplate. If you do try to take the harness out, remember exactly how it

is threaded through in order to prevent interference with the functioning of

the whole system.

When fitting the crotch strap, the back D-ring must fit correctly as well. Ad-

just it by shifting it along the harness high enough so that it does not disturb

you while swimming, but low enough to allow you to reach it even with the

cylinder (or double cylinders) mounted on. When adjusting the D-ring, take

into account the possibility of bigger and longer cylinders than the ones you

usually use. Before using it for the first time, adjust the harness so that the

buoyancy compensator is well fitted on your back, and does not move. The

strap can be adjusted by gradually moving it across the stoppers placed on

the back side of the backplate.

Once the harness is adjusted, the cylinder on your back should be in a po-

sition that allows you to tilt your head back, and to reach and control the

cylinder valve (test this in the water). Proper placement of the cylinder re-

sults in the right trim. If the gear outweighs the lower parts of your body, slacken the crotch strap a bit and tighten

the shoulder straps. This will push the cylinder closer to your head, and your centre of mass will be higher. If the

gear outweighs the upper part of your body, do the opposite.

When fitting the main strap, ordinary clothes such as pants and a T-shirt are sufficient. Put the backplate (without

the wing) on your back, and run the crotch strap between your legs. The belt buckle on the waist strap must pass

through the crotch strap loop and rest on the right side of the crotch strap when fastened. The waist belt and

crotch strap should be as snug as possible, but still comfortable.

Fit three fingers under the strap at the level of your collarbone. If there is not enough space, slacken the straps.

If it is too loose, shorten the strap by moving it in front of the stoppers (buckles with two holes) on the back side

of the backplate. Repeat the whole procedure until you can fit three fingers under the straps without force, but

without the straps becoming too loose. At the same time, you should be able to pull your arms out. Check to see

that both straps are the same length. Once the straps are adjusted, the backplate should be high enough to allow

you to reach its upper edge; the top should be just below the second vertebra.

Once you fit the main straps, you must adjust the D-rings. The chest D-rings should be as low as possible, while

still allowing you to cross your arms over your chest comfortably. The D-rings should be high enough for you to

reach the left ring with your left thumb, and the right ring with your right thumb. The D-ring on the left side of the

waist strap should be roughly on your hip.

Continue by passing the left side of the waist strap through the belt buckle in such a way that the belt buckle can

pass through the crotch strap (see the picture). Guide the strap through each opening in the buckle, starting with

the outside one. We recommend securing the strap by passing it again through the first opening.

Do not shorten the straps after the first fitting. Wait until you test your gear in the water. You will be doing addi-

tional adjustments for 3 to 5 dives until the gear is fitted properly on your back – as snug as is comfortable. Only

then can you shorten them to leave an extra 10 to 15 cm on each side. We recommend finishing off the right side

of the waist strap in an arc. When shortening straps do not forget to finish them off properly so that they do not

fray. You can use a cigarette lighter or a candle to do this, but make sure that you do not create a thick layer on

the end that would hinder threading the strap through the buckles and stoppers.

The backplate also includes a crotch strap with two D-rings. Its length is adjusted by moving the strap through

the back D-ring. We also recommend tightening the strap securely at the back D-ring, making sure to prevent it

from coming untied (especially in the case of frequent scootering). The crotch strap should be adjusted so that

the cylinder does not slide on your back, while still being comfortable.

Initial Assembly of the Compensator

Assembly of the compensator with a single cylinder

We recommend first bolting the wing and the backplate loosely together. Run the bolt through the wing and then

the backplate in such a way that the nut faces your back and the bolt head shows up on the wing. Do not tighten

Use of the crotch strap and waist strap, po-

sitioning of the knife and belt buckle