TM 11-6780-225-12
cathode. These items may damage
b. Disconnect the power cable from the power
the cathode.
head.
c. Set a large sheet of paper or plastic on a table
or on the floor of the shelter.
h. Remove the silver by flexing or scoring the
cathode cylinder. If necessary, a putty knife may be
d. Lift the power head straight up so that the
used to scrape off the silver.
cathode is out of the fixer solution. Allow the cathode to
drain into the tank for about 10 seconds.
e. Set the power head on the paper with the
i. Place the silver and any sludge accumulated on
cathode down.
the bottom of the tank into a container. The container
may, be turned in to the Property Disposal Office or
CAUTION
shipped to:
To prevent any fluid from entering
the power head, do not set the power
head upside down.
Precious Metals Recovery Office
Earl Naval Ammunition Depot
Building C38
Colts Neck, New Jersey 07722
loosen the setscrew and pry the cathode away from the
coupling; lift off the power head and set it aside.
j. Insert the cathode in to the power head coupler.
g. Set the cathode on its side on the paper.
Be sure that the flat side of the cathode shaft is oriented
towards the setscrew. Tighten the setscrew with the
CAUTION
special tool provided.
Do not use steel wool. cleansing
pads, sand paper, nitric acid, or a
hammer to remove the silver from the
Figure 2-18. Silver recovery unit, power cathode, and special tool.
Change 6 2-23
