Fig.14
Remove the small rotate metal ring. As Fig. 15
Fig.15
Remove the adjustable knob, and see the inner part .As Fig. 16
Fig.16
Note:
Most of the time, the hot lid adjustable knob looses because the contact between the
four small gears and the big gear is broken. Please adjust and make sure the four gears are
in the same level, otherwise the hot lid can not be positioned even which will cause reagent
evaporation.
2.5 Hot lid repair and replacement.
Remove screws as Fig.17
