Clarity WN-5040-720 manual Building the Wall, First Row, Laying the first row

2.4 Building the Wall, First Row

It is most important to make the first row straight. Do not put the screens on yet.

Laying the first row

1.Set the first row of Margays side by side without the screens. Bolt them loosely together near the bottom with the long side-to-side bolts, washers and wingnuts.

2.Attach the screen supports to the front edge of the first row. The screen support only mounts one way and is used on the bottom row only. It pro- vides a stop or rest for the bottom screens.

3.Check the straightness of this row. This first row must be absolutely straight.

Do not use your eye alone to judge straightness. Use a tightly stretched string or a very long level. It is ok if the row is not level, as would be the case in a tilted wall, but it must be straight.

4.Use shims under the Margays to make the row straight vertically.

5.When the row is straight, tighten the bolts hold- ing them together. Then check straightness one more time.

6.Go to next section (page 16).

Why is straight so important?

All Clarity display that stack must have a straight first row. If the first row is not straight, the arrange- ment gets worse as the wall goes up, and the screens won’t align properly.

Margay is a little more critical of straightness, because its screens have almost no mullions.

The mullion is the outside border of the screen. In most Clarity products this is a narrow edge of metal that holds the screen in place. In Margay the mullion is a thin piece of tape.

The advantage of this “mullion-less” screen is that the finished wall will have almost no black lines between images on the screens.

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