Servicing projection equipment (1932)

Page scan 00096 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
00096
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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80 OPERATION OF SET be beyond the safety allowance. The highest permissible temperature is 194° Fahrenheit. In order to test the temperature, use a thermometer which has its bulb encased in putty. Allow the putty to remain in contact with the motor until it has attained the full motor temperature and until the heat has penetrated the putty. The reading will then be close to accurate. If the temperature is 194° Fahrenheit, or above, look for trouble. (b) — In all probability the set is constantly being overloaded. Keduce this overload. (c) — If a Westinghouse series arc equipment is being used, be sure to keep both short-circuiting switches closed when idling, or else the field coils will become overheated. (d) — If a 110-volt motor is employed, it may be on the 220-volt wires of the three-wire system. Check this and change it if found at fault. The same applies to that case in which a 110-volt line is being used for a 220-volt motor.