Hoefer SE900 - Manual (Page 11)

• p5
Safety Interlocks
Safety interlocks are mounted on the sides of the tank. One is red and
the other is black to help with orienting the gels correctly within the
gel tank. For safety reasons, the top of the safety interlock secures the
lid during electrophoresis, and the bottom prevents access to the drain
port. This prevents electrical hazard of draining electrified buffer. A
key at the bottom of the separation tank (Fig 4) aligns with a mating
feature in the PAGE rack (Fig 6) to ensure proper orientation.
A drain port is included at the bottom behind the black safety inter-
lock. The drain is protected by a removable filter that will block parts
of gels from clogging the drain port. This filter should be removed
and rinsed off periodically.
Fig 4. Key aligns with a mating
feature in the PAGE rack to ensure
proper orientation.