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Oil and clean your projector.
After oiling, run the motor for a few minutes.
Check that no excess oil has leaked or been finely sprayed on
the condenser or on any other part. Next, run a few feet of film and focus the lens, also check the tone and volume controls. Check the non-sync by putting on a record. Note the different positions on the volume control for the film
and for the non-sync. Lay out the tools required for an emergency, especially your
torch, fuse-wire, pliers and screw-driver, and see that a
spare projection lamp is placed in a handy position. Having seen that the equipment is functioning to your satisfaction, there now remains the actual operating for the show, but there are quite a number of things to be checked before the final switching on.
The lacing of the film will depend on the design of the projector, but the principals of lacing are the same for every projector, especially the rule never to switch on before you are positive that the film is correctly engaged in the gate and with the sprockets.
Before switching on always check the following: — Amplifier on.
Gate properly closed. Film correctly seated in the film channel. Film engaged on all sprockets and correctly placed over all
rollers. Loops the correct size. No slack on the take-up. Sound /silent switch correct. Forward switch correct. (Not at reverse.) The clutch engaged. The voltage constant and correct. The person appointed to switch off the hall lights is ready for
the signal. The position of the fuse-box ascertained.
The Performance
When starting, switch on the motor first, but be ready to switch off quickly should the film jump a sprocket or a loop tighten. Next switch on the lamp as the first title appears and at
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