Servicing projection equipment (1932)

Page scan 00066 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
00066
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
August 15, 2024
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50 LIGHT SOURCE (Carbon Troubles) 9. Carbon Core Blows Out (a) — The current is too heavy, therefore the cored carbon is overloaded. Try a reduction of the current and if the difficulty is ended, have your meter checked to make sure you have not increased the current unknowingly through a faulty reading of the meter. Also may be caused by defective core of poor manufacture. 10. Carbons Cause Sputtering, Hissing (a) — This may be due to dampness in the carbons. The best way to avoid this trouble is to have one or more trims in preparation in a suitable place, such as against the lamphouse or over the rheostat, in order that they will be thoroughly dried. 11. Carbon Burns with Lip or Over-hang (a) — The negative carbon, in all probability, is too far forward. Keadjust the alignment until the crater is correct for the best light. Also, the positive carbon may not be revolving. 12. Carbon "Lips" When Using Reflector Arc (a) — If the lip is on the lower side and is wasting the light upward, the negative carbon is set too high and therefore requires a slight adjustment