. Motion picture electricity. , rep-resenting the high-voltage side, is an ordinary electricmotor which can be taken off the base in a few minutestime and used as an electric motor, together with its auto-matic starter. These are points of economy which repre-sent certain advantages to the purchaser of this class ofapparatus. It is not practical to give wiring diagrams showing theconnections for these machines, because they vary for dif-ferent voltages and currents, and as these machines aregenerally built to specifications to suit the individual op-erator or manager, it is best to depend upon
. Motion picture electricity. , rep-resenting the high-voltage side, is an ordinary electricmotor which can be taken off the base in a few minutestime and used as an electric motor, together with its auto-matic starter. These are points of economy which repre-sent certain advantages to the purchaser of this class ofapparatus. It is not practical to give wiring diagrams showing theconnections for these machines, because they vary for dif-ferent voltages and currents, and as these machines aregenerally built to specifications to suit the individual op-erator or manager, it is best to depend upon the blueprintand diagram of connections which accompany the ship-ment, and if the instructions should be lost, another setcan be readily obtained at the office of the manufacturer. 214 MOTION PICTURE ELECTRICITY Fig. 125 illustrates the installation of two Hallbergdirect current 40 to 50 amperes economizers operating onno-volt direct current, delivering 40 to 50 amperes tothe arc of each of two moving picture lamps in one of. Fig. 125 Clunes Theaters at Los Angeles, Cal. The installation iscomplete, showing the switch and starting box with lightcontrollers mounted back of the economizers, which areinstalled side by side on a foundation on which they didnot have to be bolted down. MOTION PICTURE ELECTRICITY 215 HALLBERG AUTOMATIC ELECTRIC D. Instructions for Setting and Operating Unpacking and Setting Up.—The machine should beunpacked carefully and installed in a dry, cool place whereit will be free from dust and easily accessible for inspec-tion and care of brushes and oiling. If the operating roomis large enough, the machine can, of course, be put there. Connections.—All connections should be made asshown on the wiring diagram sent with each must be clean and tight. Fuses should not have ahigher capacity than that given on the diagram. Brush Tension.—After the machine has been prop-erly set and connected, rotate the armature by hand andexamine
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