Servicing projection equipment (1932)

Page scan 00018 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
00018
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 drops and then becomes steady, adjust it for newconditions. If it fluctuates seriously on a line test, notify the supply company. (c) — A bad carbon jaw, which should be tested and corrected, may be affecting the arc voltage. (d) — The motor may be dirty, oily, etc. Inspect the motor, and if any fault is found there, look under Motors and Motor Generators. 2, Device Fails to Operate Warning: Arc Controller Motors, unless otherwise specifically noted by the makers, are Direct Current Motors and are invariably connected across the arc; therefore, when changing from the usual D. C. to A. C. for emergency operation, do not use devices which have such D. C. Motors. (a) — The device is being used on A. C. when intended for use on D. C. See the above warning. (b) — The motor is damaged by thro wing-in on A. C. The only remedies are the repairing of the damage or the procurement of a new motor. (c) — The wires or connections may have been broken, loosened, or disconnected by the vibration of the motor or by a jar. These parts should be examined, and then repaired or tightened. (d) — The relay, the governor, or any other governing mechanism is either broken or binding