Low-E Checks in Final

Low-E Checks in Final
Overview:
            The process of checking for backwards low-e units in final.

Definitions:
 
Procedure:

1. Each quarter, make sure the low-e wand is working by touching the AMSCO LOW-E WAND TEST BAR with the low-e wand.
2. Before setting any unit, use the low-e checker wand to check for the proper low-e orientation.
3. To check the IG unit, place the wand on both sides of the IG unit.
4. If the low-e is facing out, the wand will omit a sound and the red lights on the side of it will light up.
5. If the wand does not light up and omit a sound, the lites on the IG unit are oriented correctly.
6. Place the low-e wand on top of the last unit you tested.
7. For hard coat units: Hard coat low-e will cause the low-e wand to light up.

The low-e wand is a continuity tester. The wand operates by sending a small (4v) amount of electricity between its two copper heads and lighting up if a complete circuit is made. This is why any metal surface tested will cause the wand to light up.
Low-E is a thin coating of metal oxide applied over the glass lite. If tested with a low-e wand, the metal in the metallic coating will cause the wand to light up.
The low-e box is different than a low-e wand. The box is able to tell you what surface the low-e is placed on (surface 1, 2, 3, or 4) while the wand is only telling you if the low-e is placed on one of the outside surfaces.