g. Inspect the Roller Racks.
(1) Remove the roller racks to clean. Remove the racks from the processor
and rinse the rollers with warm water. Water temperature should not exceed 110F
When removing the fixer rack, prevent contamination of the developer
with fixer by placing the splash guard on the partition between the
developer and fixer tanks.
(2) Remove built up deposits. Discoloration of rollers is not harmful, but
removes any build up of deposits.
(a) Use warm water and a plastic abrasive material such as Scotch-
Brite on hard rollers.
(b) Use warm water and a towel on soft rollers.
Pay particular attention to the non-submerged rollers at the top of
(3) Clean inner rollers. Clean inner rollers by removing all outer rollers on
the entrance side except the bottom one. Remove the studs and nuts from the drive
(4) Eliminate algae. A slippery condition of the wash rack rollers is usually
caused by bacterial growth.
(a) Periodic use (determined by experience) of an algae eliminator
such as Algex or Dowicide G, can prevent this condition.
(b) The most effective method of using an algae eliminator is to add it
to the wash tank and allow the rack to remain in the solution overnight. Before starting
the processor, drain the wash tank and rinse the rack.
(c) If the processor is used on a 24-hour-a-day basis, add the algae
eliminator to the wash tank during operation and proceed as normal.
(d) To minimize bacterial growth, drain the wash tank at shutdown. Be
sure to close the drain valve before start-up.
(5) Check rollers. Be sure all sprockets are properly engaged in the rack
chain. Check all rollers visually for unusual warping and bow. Be sure the rack itself is
square. Pay particular attention to the roller configuration. Refer to figure 2-11.