Advertisement
VI. Changing the projection lamp
Open the combined panel and lamp
mount 21, press down on the lamp and
turn it a quarter-turn in the direction
shown by the arrow.
Remove the
lamp, and put in a new one by carrying
out the same operations in the reverse
order (when inserting the new lamp,
see that the flanges on its base are
opposite the corresponding gaps in the
lamp-holder socket).
The standardized projection lamps now
on the market are practically inter-
changeable, so that no readjustments will be necessary when the lamp
is changed. To ensure a maximum life of the lamp, the lamp-holder socket
is fixed on shock-absorbing elastic stands.
VII. U pl<eep
Never use any metal tool or other metallic object for cleaning the
projector.
Lubrication
After every 25 hours of use the pro-
jector should be lubricated by intro-
ducing 3 or 4 drops of high-grade
sewing-machine oil into the lubricating
ducts, which are marked in red, at
the same time letting the motor run
very slowly.
Duct i lubricates the
central
part of the mechanism, and
ducts hand k lubricate the upper
spool spindle and the motor.
Cleaning
Optical equipment:
Using a dry, clean paintbrush with fine soft hairs, remove
all dust from the lens, the reflecting mirror next to the projection lamp,
and the glass screen 24 of the catathermic filter.
Then clean all the glass
su rfaces with a clean, dry chamois-leather cloth.
Pressure-pad (on lens-holder) and gate
These two parts, which are very
easy to get
at,
should be cleaned fairly often to remove any deposits of
10
Advertisement
