Dynamicnord SBC-20 Manual - Page 10

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Lower and upper drain valve right side

At the right rear of the BCD is a pressure relief valve equipped with

a pull button and pull cord. This lower drain valve can be manually

activated when the diver is in a horizontal or inverted position in the

water and the valve is at the top of the BCD's air bladder.

The same can be done with the combined pressure relief and drain

valve in the upright position.

WARNING

The draining fixtures offering the maximum air drain are the

shoulder valve and the lower valve.

Function of the pressure relief valve

The pressure relief valve prevents over-inflation of the BCD. If the

internal pressure exceeds the spring pressure in the pressure relief

valve, the valve automatically opens and releases air to prevent

damage to the BCD. The valve will automatically close when the

internal pressure falls below the spring pressure in the pressure relief

valve.

Adjusting the harness

WARNING

Adjust the BCD so that it does not interfere with your breath-

ing when fully inflated. Restriction of normal breathing while

wearing the BCD can result in injury or death. Before each

use, check that all belts, straps, quick-release buckles and/or

the cummerbund are adjusted correctly for the user.

Opening and securing the straps

So that it can be opened and closed quickly, the BCD has quick-

release buckles on both shoulders, on the chest and on the

cummerbund. See figure on next page.

The cummerbund also features a Velcro system. All fasteners can be

opened with one hand.

Adjustable shoulders

The BCD's upper shoulder straps are not adjustable. The length of

the lower straps is adjusted using a movable quick-release buckle

through which the strap is routed. To shorten it, grab the free end of

the strap and pull it down firmly. To lengthen the strap, lift the front

portion of the buckle while wearing the BCD.

Adjusting the BCD to different body sizes

All DYNAMICNORD BCDs allow for optimal size adjustment by

combining different adjustment options. If necessary, the waist belt

can also be adjusted quickly and easily under the back padding.

Cummerbund

The cummerbund should be fastened around the waist (above the

hips) and NOT around the rib cage or diaphragm, with at least two

centimeters overlap at the Velcro. The side panels are attached to the

back plate and can be adjusted in length. See figure on next page. It is

important to ensure that the BCD is not worn too high on the body as

this will result in an undesirably high center of gravity and may cause

discomfort or shortness of breath.