Servicing projection equipment (1932)

Page scan 0009 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
0009
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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Contents (Arranged Alphabetically) PAGE ARC CONTROLLER: 1-3 Device operates poorly 1-2; Device fails to operate 2-3; Device continues to operate after the Table Switch is opened 3. ARMATURE TROUBLES : 81 Armature overheats 81; Armature wabbles 81; Armature heats up suddenly 81. BALL BEARINGS: 82-84 Ball bearings leak oil 82; Sleeve bearings leak oil 82-83; Sleeve bearings heat-up 83; Ball bearings run noisily and show wear 83-84; Waste packed bearings heat-up 84. BEARINGS: 67-70 Ball bearings are roughened or completely ruined 67; Bearings show undue wear 67; Bearings are grooved 67-68; Brushes wear excessively 68; Brushes stick in holders 68-69; Brushes make poor contact 69-70; "Bucking" (Arcing between adjacent brush arms) 70. BELL OR BUZZER SIGNAL SYSTEM: 4-6 Bell (or buzzer) does not operate 4-5; Device operates intermittently 5; Bell (or buzzer) sounds continuously 5-6; System works when new battery is used, but soon fails to operate 6. COMMUTATOR TROUBLES: 85-87 Commutator bars are short circuited 85; Commutator overheats 85; Commutator is grooved 85-86; Commutator is cut and rough 86-87; Commutator shows ring of fire all around 87. DOUSERS: 7-8 Dousers open and close too early or too late 7; Dousers fail to operate 7; Dousers open or close too far 8; Dousers will not stay open during running 8. EMERGENCY AFTER FILM FIRES: 146 EQUIVALENTS, FORMULAS, ETC.: 147-157 FIELD COILS: 88 Field coils overheat 88.