Hoefer SE640 - Manual (Page 27)

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Plug the color-coded leads into the jacks of an
approved power supply. Plug the red lead into the
red output jack and the black lead into the black
output jack. In most systems, the red lead, which is
connected to the bottom electrode, is the anode (+),
and the black lead, connected to the top electrode,
is the cathode (–).
Important assembly notes:
• Do not fill the upper or lower chamber above the
recommended levels illustrated in Fig 7. Remove
buffer in contact with the electrode posts.
• Pour buffer slowly and away from the slots in
the upper buffer chamber to avoid disturbing
the samples.
Fig 7. Buffer chamber levels.
lower chamber
buffer level
upper chamber
buffer level