Servicing projection equipment (1932)

Page scan 00023 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
00023
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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DOUSERS DOUSERS 1. Dousers Open and Close Too Early or Too Late (a) — The switch may stick and in this way upset proper operation. Test and correct it by lubrication, if it is found faulty. The switch should be lubricated constantly to avoid a recurrence of this trouble. (b) — Dirty and loose contacts, which should be checked and remedied, are probably affecting the timing. (c) — The switch probably does not make a simultaneous contact with the contact units, and should be examined and corrected. 2. Dousers Fail to Operate (a) — An open circuit may be the reason for this trouble. If a broken circuit is found to be the cause, trace and then remedy it. (b) — Should the coil be burned out examine it and, if necessary, replace it.