Buchi K-424 - Replacing the Insulation; Replacing the O-Rings

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Digestion Unit K-424 6 Maintenance
6.4 Replacing the insulation
To avoid contact with live parts, components may only be
replaced when the apparatus has been isolated from all
supply points.
Electrical and electronic components are to be replaced
by skilled engineers.
No components may be replaced when the apparatus is
warm or hot. Allow the apparatus to cool down!
Replacing upper insulating plate
This insulation is freely accessible and can be replaced
without tool.
6.5 Replacing the O-rings
• Cut damaged O-ring with a knive or a scalpel
• Remove tube holder
• Fit new O-ring over the suction module (see Fig. 11)
• Insert tube holder and fix with O-ring.
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Fig. 11: Replacing the O-rings
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