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550 HANDBOOK OF PROJECTION FOR
MANUFACTURER'S CLAIM.— The manufacturer claims high efficiency for the Actodector; also that it is very simple and easy of control and operation.
INSTALLATION.— The Actodector must be installed perfectly level. For general instruction as to location, see page 496. The manufacturer suggests a suitable support of heavy timbers or of concrete, its top about 20 inches above the floor line. If the base be of concrete it should have a carefully leveled wooden platform on top, to which the machine may be attached by lag screws of suitable size, though they should not be pulled down too tightly. The manufacturer recommends mats of rubber, felt or cork under the feet of the machine, to absorb vibration and thus secure quietness of operation.
CAUTION. — If the top of the base be not perfectly level, then bolting down the bedplate of a 4-bearing Actodector may pull the machine elements out of line with each other, which will cause the coupling to wear rapidly. When installing be sure the bedplate is level.
WIRING. — The generator wiring diagram is shown in figure 169. You have only to follow it faithfully, observing Underwriter's Rules and the local laws. The manufacturer recommends that connections be made by a competent electrician.
BEFORE STARTING THE MACHINE.— After installation and conections are completed, see to it that everything is clean around the commutator, armature and motor rotor, that the armature shaft turns freely, that bearings are properly lubricated and that the brushes are under proper tension and move freely in their holders.
Close switch and observe whether armature revolves in the direction of the arrow on the generator frame. If it does not, then, if the current be 3-phase, interchange connections of any two of the wires. If it be 2-phase, interchange the connections on either phase. Single phase will always cause the armature to rotate in the right direction.
See that your positive wire attaches to the upper carbon.
OPERATION. — With projector table switches open, close motor switch, which starts the Actodector. Adjust field rheostat by means of panel control handle until voltmeter shows 70 volts.
Close projector table switch and strike arc. Adjust ballast