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IV.
Projecting
Both models
M8
and
M8R
are fitted with
a special safety device (centrifugal con-
tactor) which prevents the projection
rate from falling below the minimum
necessary to ensure adequate ventilation.
When the projection rate falls below
12 frames per second, the motor speed
starts to oscillate up and down, and the
centrifugal contactor becomes noisy.
If this occurs, increase the projection
rate by turning knob 23.
Set the motol" and film transport mechanism running by placing the
operating switch 20 on position b (see general view).
Now turn the switch to position c.
This switches on the projection
lamp and turns off the auxiliary room lighting.
Using the speed control knob 23, adjust the projection rate so as to
eliminate any trace of flicker on the screen.
Bring the picture into focus by turning the focussing ring on the projection
lens 8.
Check that the picture is properly centered on the screen, and adjust
framing if necessary by turning, knob 12.
End
of the reel
To switch off the projection lamp and turn on the room lighting, while
keeping the motor running at the same time, simply move the operating
switch from c to b.
To stop the projector completely (motor and lamp), simply press on the
operating switch as you would on a bell
push. The auxiliary room lighting will
light up automatically.
Instantaneous stopping device
To bring the projector to an immediate
stop, press on the operating switch as
described in the preceding paragraph.
8
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