Servicing projection equipment (1932)

Page scan 00094 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
00094
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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78 OPERATION OF SET (f) — The armature is out of balance. If this happens, the safest method of correction is to notify a service man. (g) — The air gap around the motor rotor may not be even all around. In the case of two -bearing sets, where nuts hold the motor and the bracket, adjustment may be made by loosening the nuts and, with a feeler gauge, used around the rotor, gently adjust the rotor until the air gap is equal all the way around. Then slowly tighten the nuts. 3. Unusually Severe Vibration (a) — The bolts holding the elements to the base are loose. They should be tightened. (b) — Look at preceding heading No. 2, under sections (b) to (f). 4. Motor Does Not Deliver Desired Amperage (a) — See that the voltage is correctly adjusted, and if ballast resistance is used, adjust the ballast resistance to raise or lower the amperage. If this fails to correct the trouble, inspect the set for mechanical defects and look for the remedies under the proper trouble headings. 5. Motor Does Not Deliver Desired Voltage (a) — This may be due to a faulty commutator. Inspect this and correct or repair it.