Hoefer TE22 - Manual (Page 15)

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p7
Install the cassette(s)
1
If transferring only one or two gels, choose the
cassette positions nearest the center. The cassettes
must be oriented so that the hinge side is facing up
and all black panels of the cassettes are facing the
same side of the transfer unit.
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.
2
Once in place, tap the 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.)