Servicing projection equipment (1932)

Page scan 00039 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
00039
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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HOUSE LIGHTS 23 HOUSE LIGHTS i. Some Lights Burn Too Brightly; Others Are Too Dim At Same Time (a) — The neutral fuse of a 3-wire system is blown out, thus causing the effect, due to the unbalancing of the circuits, of some lights burning dimly and some lights burning brightly. Inspect the fuses at the intake and at the distributing points and replace them wherever necessary. (b) — If the replaced fuse blows out, there is a short circuit or else the circuits are so far out of balance that the current drain is greater than the correct fusing permits. Test with an ammeter for the amount of unbalancing and relocate the circuits so as to obtain the correct conditions of balance which, on a 3-wire system, should be as near even on both sides as circumstances permit. 2. Emergency Lights Go Out; House Lights Still Burn (a) — The emergency light circuit may have blown out. Trace the line and inspect the fusing, for in this case, the fusing should be separate from the house fuses. Replace the blown fuse.