Aristo BES23C Manuel utilisateur
Aristo Archive Information
B23 Replacement Lamp
Mounting Instructions:
Installation:
1. Remove condenser lens collar
and carefully remove condensers.
2. Place the diffusion element into the
bottom of the condenser lens collar
and place the BES23C lamp housing
into the collar on top of the diffusion.
3. Remove top cap supporting the
tungsten lamp on the enlarger
4. With the cords coming out of the
lamp housing toward the back of
the enlarger, feed the cords thorough
the opening in the op of the enlarger.
5. Replace the condenser collar with
Aristo unit into the machine and lift
bellow over the collar.
6. Connect the matching components
of the plug between the power pack
and the lamp housing- securely.
7. Primary cord coming out the lamp housing (two prong) operates thermo. This is plugged into any available
115 Vac outlet.
8. The plug out of the power pack is plugged into your timer. (three prong). (Turn switch to “on” position.)
Leave slack on the cords coming out of the lamp housing to avoid lifting of unit when enlarger is raised or lowered.
Aristo BES23C Cold Light Head
Enlargers: Besler 23C
Coverage: 2.25 x 3.25 inch
Specications:
■ Case
Light Head: 4 31/32” Dia. x 3” H
Power Pack: 5” L x 4” W x 3 1/4” H
■ Watts: 70
■ Weight:
Light Head: 1 lbs
Power Pack: 4.2 lbs
BES23C complete system shown
BES23C Light Head
side view
BES23C collar
Aristo Archive Information
B23 Replacement Lamp Mounting Instructions con’t:
Thermostat Control
1. This feature is incorporated in all Aristo units. Thermo control maintains a continuous ambient warmth around the
lamp insuring peak brightness at each start when operated through a timer or footswitch
2. Turn on your thermo switch or plug in your thermo cord and allow your unit to warm up for about 5-10 minutes before
making any exposure.
3. To help speed up this warm-up period, the lamp may be turned on at the same time for about 3 minutes, then shut off.
The unit is now ready to operate efciently.
4. The thermo control should be left on continuously for the duration of any day or working session.
Processing Recommendations:
Negatives:
Develop negatives 20-30% longer than recommended for normal.
This becomes the “Normal” negative for cold light printing
Paper:
Expose paper so that full development time can be given. This will produce prints of good contrast and maximum quality,
maintaining a full tonal range from the whitest highlights to the deepest blacks.
Maintenance and Care:
Clean your unit periodically. With a damp cloth wipe your lamp, reector and diffusion plate of dust and dirt which may
accumulate. Keeping the until clean will help maintain optimum evenness, speed and contrast.
With a minimum of care, your Aristo cold light unit will give you years of faithful and trouble free service.
Caution:
Instructions are for guidance only.
Aristo/Voltarc will not be responsible for any damage to lamp or lamp housing for items improperly installed.
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