Servicing projection equipment (1932)

Page scan 00017 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
00017
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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ARC CONTROLLER AKC 1. Look Under Light Source ARC CONTROLLER Only that which you see at the device itself, is covered here. The feeding rate, etc., are seen elsewhere than at the controller, and are therefore covered under the proper headings. 1. Device Operates Poorly (a) — The electrical connections may be poor and the contacts dirty or corroded. Examine and tighten any loose binding posts or screws. Clean the corroded contacts. (b) — Changes in the line voltage may be affecting the arc and, since the controller is connected across the arc, it affects the device. This causes changes in the motor speed and in the timing of the governor or the relay. If the line voltage rises or