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The bulbs are changed on a Sunquest Pro 16SE tanning bed by unscrewing the side panel and sliding out each bulb. Replacement bulbs are then put in and the panel replaced.
http://www.tanning-bed-parts.com/beds/manuals/25106-02a.pdf
there are alot of elements on the periodic table:NA=Sodium 11SC=Scandium 21S=Sulfur 16SE-Selenium 34AG=Silver 47SR=Strontium 38SG=Seaborgium 106SM=Samarium 62