(e) Replace the top cover. Leave it rotated to one side to prevent
(f) Prior to using the processor again, check the chemical level and
replenishment rate. Consult the film and chemical manufacturer's literature for correct
If the processor is in continual use (24 hours a day), drain it at least once a
day and clean it thoroughly once a week. You drain the developer and fix
tanks by opening the valves on the drain lines from the pump.
(2) The operator checks the chemical and replenisher levels. He consults
the film and chemistry manufacturers' representatives for proper film and chemistry
handling and bases the amount of replenisher on the film manufacturer's
b. Perform Weekly Preventive Maintenance Checks And Services. The
equipment operator performs the following steps weekly. The weekly PMCS takes
approximately 30 minutes.
Clean the developer rack.
(a) Remove the developer rack from the processor. Use a dip pan
underneath it to prevent chemistry spills into the processor or the surrounding surfaces.
(b) Thoroughly rinse the developer rack with warm water (about 90
Fahrenheit). Turn the rollers manually to clean the chemistry solution between them.
Use a soft brush or pad to remove chemistry deposits.
(2) Check the wash tank for evidence of "algae" (bacterial slime) build-up.
Algae will, under certain conditions, build up in the wash tank. For example, if the tank
dries slowly after it drains, existing algae can form spores. The spores seed new algae
as soon as you add water. The following techniques help reduce or eliminate this
(a) Be sure the wash tank drains each time you shut down the
processor. Leave the top cover open slightly to rapidly dry-out the wash tank. See the
NOTE above concerning draining and cleaning the tank daily if it is in continual use.
(b) Use filtered cold water for the wash.
(c) Thoroughly rinse and scrub all surfaces in the wash tank with a soft
brush on a regular weekly basis.