12. Operation
The PrintLab 3504 accomplishes the complete cycle of
development, fixing, rinsing and drying of the materials, automatically. The process
parameters can be individually changed for different types of paper and processes. On
starting the machine, the unit goes into the Stand-By phase after
accomplishing a self-check and reaching the working temperature. This means that the set
temperature of the working solutions is maintained. If a cleaning program is started
before turning off the machine, the water tanks are filled automatically in approximately
12 minutes with water when the machine is turned on again. The machine has an automatic
replenishment system.
Five infrared sensors register the width of the inserted
paper without touching it, the machine is started (the transport rollers start turning,
the dryer is activated) and after processing a surface area of 0.25 m2, a replenishment
cycle is started. The replenisher rate per m2 (square meter) is adjustable.
Inserting photo paper
Open the lid of the paper-loading area. Put the paper,
emulsion side up, on the paper-loading tray. Use the left or right wall of the tray as a
guide to ensure that the paper is put in parallel Position to the transport rollers. Push
it slowly forward (the machine starts working) until the rollers start transporting the
paper. As soon as you have closed the lid of the paper-loading area, you can turn on the
light. As long as the display --- blinks, do not feed any additional prints so that paper
overlap is prevented.
Safety devices
When opening the cover of the unit, a safety switch turns off
the drive.
All heating elements are fitted with a safety temperature cut
out switch, which is activated in case the components overheat, and is re-set
automatically after cooling.
Operation
Open water tap before starting the unit!
Close water tap after turning off the unit!
The unit incorporates a microprocessor that holds the memory
of the programs for the development of different photographic materials and chemicals. All
programs (as well as any modifications) are maintained after turning off the unit.
Self-cleaning program. Menu Step 5
The PrintLab 3504 incorporates a self-cleaning system. This
guarantees that the tanks and transport rollers are cleaned automatically after use. The
automatic cleaning sequence empties all chemicals into airtight containers.
The following steps activate the cleaning program:
By pushing button F1 and by pressing ENTER, you get into the
main menu. Choose the cleaning program by pressing the arrow-keys and confirm by pressing
ENTER. The rest is shown via step by stop instructions on the menu driven display.
The chemicals are drained into the containers located in the
wall mount. They must be lower than the processor for the tank draining cycle.
The tanks are filled with approximately 2 liters of water.
The circulation pump is activated.
The tanks are flooded with water. The circulation pump as
well as the drive is turned on. After approximately 15 minutes, the water is drained off
automatically.
Note: Approximately 150 ml water remains in the hoses
after the cleaning sequence has been completed. This has no bad influence on the
chemicals. The water roughly compensates the daily evaporation rate of the chemicals and
avoids an increase in the concentration of the chemicals. The self-cleaning program should
be turned on only once a day. The working steps described under point 19. Daily Care
and Maintenance are to be applied as well.
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