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562 HANDBOOK OF PROJECTION FOR
INSTALLATION.— See General Instruction Nos. 1 and 2.
The Rexolux is so built that it may be readily disassembled, since owing to its weight it would in many cases be difficult to hoist it in place in a projection room as a unit. In order to disassemble the machine, proceed as follows :
First, open gratings 23, Plate 1, and remove the commutator brushes from their holders, allowing them to hang by their pigtails so that you can make no mistake in getting them back into their proper holder. Remove screws 26, holding cap 14, Plate 1. Remove nut 2, Plate 3. Remove nuts 24, Plate 1 (three of them) holding main upper casting 7, and main lower casting 18 together. Thrust pieces of gas pipe or steel bars through the eye-bolts and lift main casting 7 straight up and off, laying it to one side, but right side up so that oil will not run out of oil well 10, Plate 3. Next carefully lift out the armature, first, however, having provided two blocks or chairs, and lay the same down flatways on these blocks or chairs, so that the weight is entirely supported by the shaft.
It is very important that you do not lay the armature down so that it rests on the side of the alternating current rotor 4 fan 5, or direct current armature 1, or commutator 2, since any injury to these would be a very serious matter indeed Handle the armature carefully and use a little good sense if you wish to avoid trouble. The machine may now be hoisted or carried into the projection room, where its reassembling will merely be a reversal of the process of disassembling. First carefully lower the armature into place, being careful that alternating current rotor 4, Plate 2, be or the lower end. Next replace casting 7, and tighten up nuts 24, Plate 1, tight. Replace top ball races and nut 2, Plate 3, tightening nut 2 down as tight as you can get it. Replace cap 14 and screws 26. Rotate the armature by hand to see that it turns freely, after which replace the brushes in their holders, put gratings 25, Plate 1, back into place, and the job is done.
Be sure and wipe the inside of the top casting clean, since if any oil should get on it, it would collect the copper dust from the commutator and might cause a ground on the brush yoke. See that the casting and brush yoke are thoroughly cleaned of all oil and dust before it is put back in place. It would be preferable to wash them with a cloth dipped in gasoline, wiping with a clean, dry cloth afterward.
Bolts 29, Plate 1, hold pole piece 8, Plate 2, which carries coil 9, Plate 2, in place, and should not be removed under any