Hoefer TE42 - Manual (Page 16)

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Install the cassette(s)
1
The tank holds up to four cassettes; if transferring
only one or two gels, use the cassette positions near-
est the center. (The submersible heat exchanger, if
used in the TE42, fills the two center slots, so only
two cassettes can be placed in the outside slots.)
The cassettes must be oriented so that the hinges
face up and so that the black side of each cassette
faces the black cathode panel.
Work quickly when moving the assembled cassette(s)
to the tank to avoid draining the sponges: Place the
tray holding the cassette(s) near the tank, lift out one
cassette at a time, and slide it into a set of vertical
slots. Do not discard the buffer in the tray.
2
Once in place, tap each cassette lightly until most air
bubbles are dislodged. (A few small bubbles in the
sponges are unlikely to interfere with the transfer.)
3
Inspect the buffer level. Add or remove buffer as
required so that the level falls between the minimum
and maximum buffer level lines. (Buffer above the
maximum buffer level line may cause corrosion of the
electrical contacts.)