(6) Remove the light bulb. Be sure to use a clean cloth to remove and dust
the light bulb. Do not touch the light bulb with your fingers or hand, as this will leave
imprints on the bulb. The light bulb is not frosted and should be a 60-watt clear bulb
with a single filament. Check to make sure that the light is not burned out.
(7) Remove the reflector. Check the reflector for cracks or spots (mottling).
If it is cracked or spotted, you must obtain another one.
Reassemble the candler.
(a) The light bulb should be positioned so that the filament of the bulb
is parallel to the opening.
(b) The frosted glass plate at the base is positioned with the frosted
side facing the interior of the candler.
(c) The lens should be positioned with the curved surface facing away
from the light bulb.
(d) The front plate (or front cover) should be re-attached with two
(e) The opening should be checked to make sure that a bumper of
rubber, wood, or some similar material is present around the opening in the front plate.
If there is no structure (bumper) to keep the egg from contacting the metal, you must
obtain a bumper.
c. Adjusting the Height and Focusing the Beam of Light. To adjust the
candler's height, loosen the wingnuts, slide the candler up or down, and retighten the
wingnuts. The final position should allow the person who performs the candling to stand
erect with the forearms extended forward from the waist. After you have adjusted the
candler to its proper height, plug it in and turn it on. To focus the beam of light from the
(1) Hold a sheet of white paper about 1 inch from the opening. With your
free hand, loosen the bottom wing nut on the back of the candler.
(2) Adjust the top wing nut to rotate the reflector until you see a beam of
light equal to the size of a half dollar on the white sheet of paper. The image should be
sharp and crisp, without a double image.
Upon getting a sharp, crisp, single image, the bottom wing nut is