d. Do not drain the wash water unless you are changing the chemicals at the end of the day.
e. Insert the splash guard in front of the activator/stop rack.
f. Rinse the activator/stop rack, without removing it from the processor. The fill hose can be used to do
g. At each chemical change, remove the fixer rack from the processor and clean it in a large sink to
remove any chemical buildup. To do this, remove the dryer cover first, then the dryer transport rack and last the
wash section cover. Use warm water and a soft brush or sponge.
h. Place the clean racks in the processor.
i. Give all sections time to drain completely; then close all drain valves and add new chemical solutions
as outlined under initial start-up.
j. Record the date/time of chemical change.
Learning Event 6:
IDENTIFY THE IMPORTANCE OF SILVER RECOVERY
Although it is optional, visual information units should install silver recovery equipment for two reasons:
It saves you money, and, it reduces silver to levels which are low enough to comply with local codes. This
protects the environment from high levels of waste.
A satisfactory hookup for silver recovery is shown in Figure 2-5. All of the chemical solutions; activator,
stop bath, and fixer are drained through two KODAK Chemical Recovery Cartridges, Type 2-P, connected in
a. For satisfactory flow, the first cartridge must be about 4 to 6 inches higher than the second cartridge.
b. The wash water drains through the usual separate water drain.
To drain the chemicals through the cartridge:
a. Turn the three-way-valve handle toward the line leading to the first cartridge.
b. Open the activator, stop, and fixer drain valves until the processor sumps are empty.
c. Turn the three-way valve handle away from the cartridges so that the rinse water will bypass them
and go directly to the drain during the rinsing procedures.